Flagstaff Climate & Monthly Temperature Overview – United States

Summer in Flagstaff

Flagstaff experiences hot summers with relatively low humidity. July and August are the warmest months, with average high temperatures hovering around 80 degrees Fahrenheit (27 degrees Celsius). Evenings are usually mild, with temperatures dropping to the low 50s Fahrenheit (11 degrees Celsius). Rainfall is common during the summer, but it typically occurs in the form of brief, heavy showers. Although the sun shines intensely during the day, it’s important to note that Flagstaff’s high altitude means that nights can be chilly, so layered clothing is recommended.

Winter in Flagstaff

Flagstaff has cold and snowy winters. December and January are the coldest months, with average high temperatures near 40 degrees Fahrenheit (4 degrees Celsius), while nighttime lows can dip below freezing. Snowfall is common during the winter months, with an average of over 100 inches (254 centimeters) annually. While the snow can provide opportunities for winter sports enthusiasts, it can also make driving conditions challenging. Despite the cold and snow, Flagstaff’s winters are often sunny, with clear skies and beautiful mountain views. It’s crucial to pack warm clothing and be prepared for extreme cold when visiting Flagstaff during the winter.

Summer Temperatures

Flagstaff, nestled in the high desert of northern Arizona, experiences warm summers with average temperatures ranging from the mid-70s to low 80s Fahrenheit (24-28 Celsius). The hottest months are June, July, and August, when temperatures can occasionally reach the mid-90s (35 Celsius) or higher. However, due to Flagstaff’s high elevation of over 7,000 feet (2,134 meters), the nights remain relatively cool, dipping into the mid-50s (13 Celsius). The low humidity and frequent afternoon thunderstorms provide a refreshing respite from the daytime heat.

Winter Temperatures

Flagstaff’s winters are characterized by cold temperatures and occasional snowfall. December, January, and February are the coldest months, with average temperatures hovering around freezing (32 Fahrenheit). Nights can be frigid, often dropping below 20 degrees Fahrenheit (-7 Celsius). Flagstaff receives an average of 100 inches (254 centimeters) of snow annually, which typically accumulates from December through March. Winter storms can bring periods of heavy snowfall and icy conditions, making driving hazardous at times. Despite the cold, the clear skies and stunning winter landscapes offer opportunities for outdoor activities such as snowshoeing and cross-country skiing.

Cloud Cover in Flagstaff, United States

Flagstaff, located in the high desert region of northern Arizona, United States, experiences a semi-arid climate with relatively low humidity and a moderate amount of cloud cover throughout the year. The city’s elevation of over 7,000 feet plays a significant role in shaping its cloud patterns, as it is often above the level of low-lying clouds. During the summer months, Flagstaff typically sees a mix of clear and partly cloudy days, with occasional afternoon thunderstorms that bring brief periods of heavy cloud cover.

In the winter, cloud cover in Flagstaff becomes more prevalent due to the influence of storm systems that move through the region from the Pacific Ocean. These systems often bring periods of overcast skies and can produce snowfall. However, even in the winter, Flagstaff still sees a fair amount of sunshine, and clear days are not uncommon. Overall, Flagstaff has a generally pleasant climate with moderate cloud cover throughout the year. The city’s unique elevation and location contribute to its distinct cloud patterns, making it an ideal destination for those seeking a balance of sunny and cloudy days.

Annual Precipitation

Flagstaff experiences a semi-arid climate, characterized by relatively low annual precipitation. On average, the city receives around 24 inches (60 centimeters) of rainfall and snowfall combined each year. This precipitation is distributed fairly evenly throughout the year, although there is a tendency for somewhat drier conditions during the late summer and early fall months.

Seasonal Variability

The winter months (December through February) are generally the wettest, with Flagstaff receiving an average of around 6 inches (15 centimeters) of precipitation per month. This can include a mix of rain and snow, depending on the temperature. In contrast, the summer months (June through August) are typically the driest, with an average of only 1-2 inches (2.5-5 centimeters) of precipitation per month. This precipitation often takes the form of short-lived thunderstorms.

Influence of Monsoon Season

During the summer months, Flagstaff is often affected by the North American Monsoon, a weather pattern that brings moisture from the Gulf of Mexico into the southwestern United States. The monsoon season typically lasts from mid-July to mid-September and can result in periods of heavy rainfall and flash flooding. However, the monsoon can also be highly variable, with some years experiencing very little monsoonal activity while others see frequent and intense storms.

Annual Precipitation

Flagstaff, Arizona is known for its relatively dry climate, with an average annual precipitation of 23.2 inches. The city experiences a distinct wet-dry season, with most of the precipitation occurring during the summer months (July-September). During this period, thunderstorms and heavy rain events are common, contributing significantly to the annual rainfall totals. The driest months are typically April and May, with average precipitation of less than 1 inch each month.

Snowfall

In addition to rainfall, Flagstaff also receives a substantial amount of snowfall during the winter months. The average annual snowfall is 107.8 inches, making it one of the snowiest cities in Arizona. Snowfall typically begins in November and can persist into April, although the heaviest snowfall occurs between December and February. The combination of heavy snowfall and consistent cold temperatures makes Flagstaff a popular destination for winter sports enthusiasts, such as skiers and snowboarders.

Winter Wonder in Flagstaff: A Snow-lover’s Paradise

Flagstaff, a picturesque mountain town nestled in the expansive landscape of Northern Arizona, is renowned for its pristine winter wonderland. Throughout the season, the city is enveloped in a thick blanket of white snow, casting a serene and enchanting ambiance upon the surroundings. Snowfall is a regular occurrence in Flagstaff, with an average annual accumulation of over 100 inches. The heaviest snowfall typically occurs during the months of December, January, and February, transforming the city into a winter playground for outdoor enthusiasts.

Snowfall and its Impact on Flagstaff

The substantial snowfall in Flagstaff has a significant impact on the city’s way of life. During the winter months, the snow transforms the landscape into a breathtaking winter wonderland, attracting skiers, snowboarders, snowshoers, and other winter sports enthusiasts from near and far. Flagstaff boasts world-class ski resorts such as Arizona Snowbowl and the Grand Canyon National Park’s South Rim Ski Area, offering a thrilling experience for winter sports enthusiasts. Additionally, the city’s iconic Snowbowl Road leads to the Snowbowl Ski Area, a beloved destination for locals and visitors alike. Whether it’s carving through fresh powder on the slopes or enjoying a cozy apres-ski drink, Flagstaff offers a winter experience like no other.

Sunrise and Sunset Times

Flagstaff, Arizona experiences beautiful sunrises and sunsets throughout the year. The exact times of sunrise and sunset vary depending on the time of year, with the earliest sunrise occurring around 6:00 AM in June and the latest sunset occurring around 7:30 PM in July. During the winter months, sunrise can be as late as 7:30 AM and sunset as early as 4:30 PM. It is important to note that these times are approximate and can vary slightly depending on factors such as cloud cover and atmospheric conditions.

Weather Conditions

Flagstaff’s weather conditions can impact the visibility of the sun. During the summer months, Flagstaff experiences frequent thunderstorms, which can produce heavy rainfall and lightning. These storms can obscure the sun and make it difficult to see. Conversely, during the winter months, Flagstaff experiences a high frequency of clear skies, providing ample opportunities to enjoy the sunshine. Additionally, Flagstaff’s high elevation of over 7,000 feet above sea level contributes to its clear air and spectacular sunsets. The lack of air pollution allows the sun’s rays to scatter less, resulting in vibrant colors and stunning sunsets.

Observing the Moon in Flagstaff, United States

Flagstaff, Arizona, situated at an elevation of 7,000 feet (2,100 meters) above sea level, offers exceptional conditions for moon observation. The city’s high altitude and dry, clear skies provide ideal viewing conditions, allowing observers to witness the Moon’s intricate craters, mountains, and valleys in stunning detail. The lack of light pollution further enhances the experience, enabling observers to appreciate the Moon’s subtle hues and shadows.

The Lowell Observatory, located just 8 miles (13 kilometers) west of Flagstaff, has been at the forefront of lunar exploration since its inception in 1894. The observatory’s historic Clark Telescope, a 24-inch (61-centimeter) refractor, has been used by generations of astronomers to study the Moon’s surface. Visitors to the Lowell Observatory can participate in guided moon tours and enjoy educational exhibits that delve into the history and science of lunar exploration. The observatory also hosts special events and programs throughout the year, such as night sky viewing parties and talks by renowned astronomers, providing visitors with an immersive and informative moon-viewing experience.

Average Humidity

Flagstaff, Arizona, located in the high-altitude Colorado Plateau, experiences relatively low humidity throughout the year. The annual average humidity level ranges between 30% to 50%. Summer months typically have the lowest humidity, hovering around 30%, while winter months see a slight increase, reaching approximately 50%. This arid climate is primarily attributed to the city’s high elevation, which causes the air to be thinner and less capable of holding moisture.

Seasonal Variations

The seasonal variations in humidity in Flagstaff are distinctive. During the hot and dry summer months, from May to September, the humidity levels can drop to as low as 20%. This is due to the dominance of warm, descending air that prevents clouds and precipitation from forming. In contrast, the winter months, from December to February, bring a slight increase in humidity, with levels reaching around 50%. However, these higher humidity levels are still considered relatively low compared to other regions due to the city’s persistently arid climate.

Seasonal Wind Patterns

Flagstaff’s wind patterns exhibit distinct seasonal variations. During the summer months, warm air from the south rises, creating a low-pressure zone that draws in cooler air from the Pacific Ocean. This prevailing wind pattern, known as the southwest monsoon, brings abundant moisture and rainfall to the region. In contrast, during the winter, a high-pressure system over the Great Basin forces cold, dry air from the north to descend into Flagstaff. This cold air is channeled through the valley, resulting in frequent and sometimes strong northerly winds.

Impact of Wind on Climate

The prevailing wind patterns in Flagstaff play a significant role in shaping the city’s climate. The southwest monsoon winds contribute to Flagstaff’s relatively mild summers by transporting moisture that cools the air. Additionally, the orographic uplift of moist air on the windward slopes of the San Francisco Peaks leads to frequent下午 thunderstorms during the summer. Conversely, the strong northerly winds during the winter can exacerbate cold temperatures and create hazardous driving conditions due to blowing snow and ice. Flagstaff’s unique wind patterns thus influence the city’s temperature, humidity, and precipitation patterns, contributing to its distinct and often unpredictable climate.

Summer

Summer in Flagstaff is warm and dry, with average temperatures in the mid-70s. However, due to its high elevation, nights can be cool, so it is advisable to pack a jacket or sweater. The best time to visit Flagstaff in the summer is during the Wildflower Festival in July, when the surrounding mountains are carpeted in wildflowers. Other popular summer activities include hiking, biking, fishing, and camping in the nearby Coconino National Forest.

Fall

Fall in Flagstaff is mild and sunny, with average temperatures in the mid-60s. The leaves on the aspen trees turn a brilliant golden color, making it a beautiful time to visit the area. Popular fall activities include hiking, biking, and driving along the scenic Route 66. In October, Flagstaff hosts the annual Pumpkin Festival, which features pumpkin carving, a costume contest, and live music.

Potential and Infrastructure

Flagstaff, Arizona, possesses significant potential for solar energy utilization. Its high elevation, ample sunshine, and clear skies provide favorable conditions for photovoltaic systems. The city has actively pursued solar energy development, with the goal of becoming “the most solar-powered city in the US by 2050.” Several large-scale solar projects have been installed, including a 100-MW utility-scale solar farm and a 10-MW solar array at the Flagstaff Pulliam Airport. The city’s municipal utility, Salt River Project (SRP), also offers rebates and incentives for residential and commercial solar installations.

Environmental and Economic Benefits

Harnessing solar energy in Flagstaff brings numerous environmental and economic benefits. Solar power displaces fossil fuel consumption, reducing greenhouse gas emissions and contributing to the city’s sustainability goals. Additionally, solar projects create local jobs in design, construction, and maintenance, stimulating the economy. The use of solar energy stabilizes energy costs for residents and businesses, providing long-term financial savings compared to fluctuating fossil fuel prices. By investing in solar, Flagstaff is not only transitioning to a cleaner energy future but also fostering economic growth and resilience.

Geology and Formation:

Flagstaff is nestled on the western edge of the Colorado Plateau, a vast elevated region characterized by rugged mesas, canyons, and buttes. The topography of Flagstaff is a product of geological processes that spanned millions of years. The area was once part of a tropical swamp, but over time, tectonic forces uplifted the region and formed the Colorado Plateau. Erosion by wind and water shaped the landscape, carving deep canyons and creating the cinder cones and lava flows that are common in the area. Flagstaff lies on the western edge of the San Francisco volcanic field, which is responsible for the numerous volcanic formations found in the region.

Influence on the City:

The unique topography of Flagstaff has had a significant impact on the city’s development. The mesas and canyons provide dramatic vistas and natural barriers, while the cinder cones offer opportunities for recreation and scientific study. The city’s elevation of over 7,000 feet above sea level results in a cooler climate than surrounding areas, making it a popular destination for outdoor enthusiasts. The Lowell Observatory, located on Mars Hill, is renowned for its astronomical research and offers breathtaking views of the surrounding landscape.

Flagstaff Pulliam Airport (FLG)

Just 8 miles north of downtown Flagstaff, Arizona, sits Flagstaff Pulliam Airport (FLG). It serves as the city’s primary commercial airport, providing convenient access to travelers flying in and out of the region. FLG offers a range of services, including scheduled flights to major hubs like Denver, Los Angeles, and Phoenix, operated by airlines such as American Airlines, United Airlines, and Southwest Airlines. Additionally, the airport accommodates charter flights and private aviation for those seeking personalized travel options.

FLG is a modern and well-equipped airport, featuring a single terminal with a spacious ticketing area, comfortable seating, and a variety of dining options. It also boasts amenities such as free Wi-Fi, charging stations, and a designated pet relief area. The airport’s proximity to Flagstaff makes it a convenient gateway to exploring the city’s many attractions, including the Grand Canyon, Sedona, and Sunset Crater Volcano National Monument. Shuttle services and rental car companies operate within the airport, providing easy transportation to and from the downtown area and surrounding destinations.

Natural Wonders

Flagstaff is renowned for its breathtaking natural beauty, nestled amid towering ponderosa pines and rugged volcanic landscapes. The region is home to the iconic Grand Canyon National Park, a UNESCO World Heritage Site showcasing the immense power and geological wonders of the Colorado River. Just east of Flagstaff lies Sedona, known for its vibrant red rock formations and spiritual vortexes, attracting visitors seeking tranquility and connection with nature.

Outdoor Recreation

Flagstaff is a paradise for outdoor enthusiasts. The city serves as a gateway to the Coconino National Forest, offering a vast network of hiking trails, mountain biking routes, and scenic driveways. In the winter, the nearby Arizona Snowbowl ski resort provides ample opportunities for skiing, snowboarding, and snowshoeing. Other popular outdoor activities include rock climbing at the iconic Cathedral Rock, kayaking on the Verde River, and wildlife viewing in the majestic Oak Creek Canyon. With its year-round sunshine and diverse terrain, Flagstaff provides endless adventures for nature lovers of all ages.