Alton Climate & Monthly Temperature Overview – United States
Temperature and Precipitation
Alton experiences a humid continental climate, characterized by warm and humid summers and cold winters. The average temperature in July, the warmest month, is around 75°F (24°C), with highs reaching into the mid-80s (29°C). In January, the coldest month, temperatures average around 28°F (-2°C), with lows dipping below 20°F (-7°C). Alton receives an average of 40 inches (102 cm) of precipitation annually, distributed throughout the year, although it is somewhat less common during the winter months.
Sunshine and Humidity
Alton enjoys plenty of sunshine, with an average of 200 sunny days per year. The sunniest months are June and July, with an average of 9 hours of sunshine per day. The cloudiest months are December and January, with an average of just 5 hours of sunshine per day. Humidity levels in Alton are generally high, especially during the summer months. The average relative humidity in July is around 75%, while the average in January is around 65%.
Monthly Average Temperatures
Alton, United States experiences a humid subtropical climate with distinct seasons. The hottest months are June, July, and August, with average temperatures hovering around 26°C (79°F). During these summer months, the average daily high temperatures reach approximately 32°C (90°F), while the average daily low temperatures remain around 20°C (68°F).
In contrast, the coldest months are December, January, and February, with average temperatures close to 4°C (39°F). During the winter months, the average daily high temperatures drop to around 9°C (48°F), while the average daily low temperatures plunge to near freezing point at 0°C (32°F).
Seasonal Variations
The spring and autumn months in Alton offer pleasant temperatures. In March, April, and May, the average temperatures rise from 7°C (45°F) to 18°C (64°F), signifying the transition from winter to summer. Similarly, in September, October, and November, the average temperatures gradually decrease from 17°C (63°F) to 9°C (48°F), marking the transition from summer to winter. These transitional months provide a mix of warm and cool days, making them ideal for outdoor activities.
Cloud Cover in Alton, United States
Alton, United States, experiences varying degrees of cloud cover throughout the year, influencing its weather patterns and visual aesthetics. During the winter months, cloud cover tends to be more prevalent, with an average of 55-65% of the sky covered by clouds. This increased cloudiness contributes to cooler temperatures and reduced sunlight, often resulting in overcast skies and limited visibility. However, as spring and summer approach, cloud cover gradually decreases, leading to brighter and clearer weather. From April to October, cloud cover typically ranges from 30-50%, providing ample sunshine and allowing for more outdoor activities.
Cloud Types in Alton, United States
The types of clouds observed in Alton, United States, vary depending on atmospheric conditions and altitude. Cumulus clouds are common during fair weather, appearing as puffy, cotton-like formations. Stratus clouds often cover the sky with a uniform gray layer, reducing visibility and sometimes leading to drizzle or light rain. Cirrus clouds, characterized by their feathery, wispy appearance, are composed of ice crystals and typically indicate fair or changing weather. Cumulonimbus clouds are associated with thunderstorms and can reach significant heights, often producing heavy rainfall, lightning, and even hail. Additionally, Altostratus and Cirrostratus clouds are frequently encountered, contributing to overcast skies and occasionally producing precipitation.
Annual Precipitation Patterns
Alton, United States, experiences a temperate climate with distinct seasons that influence precipitation patterns. The city receives an average annual precipitation of about 43 inches (109 cm), which is distributed relatively evenly throughout the year. The wettest months are May and June, with an average of around 4.5 inches (11.4 cm) of rainfall each. During the summer months, thunderstorms are common, bringing heavy but often localized rainfall.
In the fall and winter, precipitation tends to be more moderate and steady, with rain or snowfall occurring more frequently. December and January are typically the driest months, with an average of about 2.5 inches (6.4 cm) of precipitation each. During the winter, snow can accumulate, especially in January and February, but it typically melts quickly due to the mild temperatures. Overall, Alton’s precipitation patterns provide a consistent supply of moisture for vegetation and water sources throughout the year, contributing to the city’s lush greenery and abundant water resources.
Annual Rainfall Patterns
Alton, United States, experiences a humid subtropical climate, characterized by distinct seasonal variations in rainfall. The average annual rainfall in Alton is 41.4 inches (1052 mm), with the wettest months being May through July. During these months, the city receives an average of over 4 inches (102 mm) of rain per month. The driest months are November through February, when monthly rainfall averages less than 2 inches (51 mm).
Seasonal Distribution
The seasonal distribution of rainfall in Alton is influenced by the movement of air masses and prevailing wind patterns. In the spring and summer, warm, moist air from the Gulf of Mexico moves northward, bringing abundant rainfall to the region. In the fall and winter, cold, dry air from the northwest dominates, resulting in less frequent and lighter precipitation. The city’s proximity to the Mississippi River also plays a role in its rainfall patterns, as the presence of the river can enhance rainfall during certain weather conditions.
Frequency and Intensity
Alton, located in the temperate climate zone of the United States, experiences snowfall during the winter months. The average annual snowfall in Alton ranges from 12 to 18 inches, with most of the accumulation occurring between December and March. While snowfall can vary significantly from year to year, Alton typically receives moderate snowfall with occasional heavy snowfalls. The city’s proximity to the Mississippi River and its elevation of approximately 450 feet above sea level contribute to its snowfall patterns.
Impacts and Mitigation
Snowfall in Alton can have varying impacts on the city and its residents. Moderate snowfall can disrupt daily routines but is generally manageable. However, heavy snowfalls can cause significant issues. Road closures, power outages, and transportation delays become common during these periods. The city implements snow removal plans to clear major roads and maintain essential services. Residents are advised to prepare for winter weather by having emergency kits and stocking up on essential supplies. The city also encourages property owners to clear sidewalks and driveways to minimize potential hazards.
Sunrise and Sunset
In Alton, United States, the sun rises and sets at different times depending on the season and time of year. During the summer months, the sun typically rises around 5:30 AM and sets around 8:30 PM. In the winter, the sun rises around 7:00 AM and sets around 5:30 PM. The length of daylight varies throughout the year, with the longest days occurring in June and the shortest days occurring in December.
Sunlight Hours
The amount of sunlight that Alton receives varies depending on the time of year. In the summer, Alton receives an average of 15 hours of sunlight per day. In the winter, Alton receives an average of 9 hours of sunlight per day. The intensity of the sunlight also varies throughout the year, with the strongest sunlight occurring during the summer months.
Current Moon Phase and Times
As of today, the moon is currently in its Waning Gibbous phase in Alton, United States. This phase occurs when the moon is more than half illuminated but less than fully illuminated. It will reach its peak illumination at 100% on February 5th, 2023, at 12:33 AM CST. The moon will rise at 5:23 PM CST today and set at 6:22 AM CST tomorrow.
Moonrise and Moonset Times in Alton
Moonrise and moonset times vary throughout the month due to the moon’s orbit around the Earth. Here are the moonrise and moonset times for the next few days in Alton:
- January 29th: Moonrise at 5:23 PM CST, Moonset at 6:22 AM CST
- January 30th: Moonrise at 6:26 PM CST, Moonset at 7:25 AM CST
- January 31st: Moonrise at 7:30 PM CST, Moonset at 8:30 AM CST
Historical Humidity Trends
Historically, Alton, United States has experienced varying levels of humidity throughout the year. Data from the National Oceanic and Atmospheric Administration (NOAA) reveals that the average relative humidity ranges from approximately 65% during the winter months to around 75% during the summer months. The highest recorded humidity level in Alton reached 90% in August 2018, while the lowest recorded level was 20% in January 1985.
Seasonal Variations and Factors Influencing Humidity
The seasonal variations in humidity are primarily driven by changes in temperature and precipitation patterns. During the warmer summer months, higher temperatures lead to increased evaporation of water from the ground and surface water bodies, resulting in higher humidity levels. Conversely, during the colder winter months, lower temperatures reduce evaporation, leading to lower humidity levels. Additionally, the proximity of Alton to the Mississippi River and its tributaries plays a role in influencing humidity levels.
Wind Patterns and Statistics:
Alton, Illinois experiences a humid continental climate characterized by hot summers and cold winters. The city’s wind patterns are influenced by its location in the central Midwest, which is a flat region with minimal geographical barriers. The prevailing wind direction is from the west-southwest, with average wind speeds ranging from 10 to 15 miles per hour throughout the year. During the summer months, the winds tend to be lighter and more variable, while the winter often brings stronger winds associated with cold fronts.
Impacts of Wind on Alton:
The winds in Alton can have noticeable impacts on the city’s environment and economy. The strong winds during winter can contribute to snowdrifts, icy conditions, and impaired visibility. Additionally, the winds can affect air pollution levels by dispersing harmful particulate matter and pollutants emitted from industrial sources and motor vehicles. The city’s wind patterns also influence the local economy, particularly the wind energy industry. Alton is home to several wind farms that generate clean, renewable energy for the surrounding communities. These wind farms utilize the city’s favorable wind conditions to harness the energy of the prevailing winds.
Spring (April-May)
Spring in Alton, United States, offers a vibrant tapestry of colors and pleasant temperatures. The average daily temperature ranges from 45 to 70 degrees Fahrenheit (7 to 21 degrees Celsius), making it an ideal time to explore the great outdoors. The streets come alive with blooming magnolias and dogwoods, casting a romantic glow over the historic district. Visitors can bask in the beauty of Jacoby Park’s vibrant tulip displays and stroll along the Mississippi Riverfront Trail, which boasts breathtaking views of the river and the St. Louis Arch.
Fall (September-October)
Fall in Alton transforms the landscape into a warm and inviting spectacle. The air turns crisp, and the average daily temperature drops to a comfortable range of 50 to 75 degrees Fahrenheit (10 to 24 degrees Celsius). Foliage throughout the region bursts into a kaleidoscope of reds, oranges, and yellows, creating a picturesque backdrop for exploring the region’s many hiking trails and scenic drives. Alton’s fall festivals, such as the Great Godfrey Pumpkin Festival and the Alton Halloween Parade, offer a unique opportunity to experience the city’s vibrant spirit and festive traditions.
Residential Solar Potential
Alton, United States, possesses significant potential for residential solar energy adoption. The city benefits from ample sunshine year-round, with an average of 266 sunny days annually. This abundance of sunlight provides homeowners with favorable conditions for generating solar electricity. Additionally, the city has a supportive regulatory environment, including net metering policies that allow residents to sell excess solar power back to the grid. Furthermore, the availability of incentives, such as tax credits and rebates, makes solar energy installations more affordable for residents.
Commercial and Industrial Applications
Solar energy also plays a significant role in commercial and industrial applications in Alton. Many businesses and industrial facilities have installed photovoltaic (PV) systems to reduce their energy costs and improve environmental sustainability. The city’s commitment to renewable energy has attracted several solar energy companies, providing businesses with access to professional design, installation, and maintenance services. Additionally, the presence of large commercial and industrial buildings with suitable roof space offers ample opportunities for solar installations. As businesses seek to reduce their carbon footprint and embrace clean energy solutions, solar energy is expected to continue gaining traction in Alton’s commercial and industrial sectors.
Hills
Alton, nestled between the Mississippi River and limestone bluffs, is characterized by rolling hills that gently slope towards the river. These hills, formed by the erosion of glacial deposits, offer a panoramic view of the city and surrounding countryside. The Mississippi River Valley to the west presents a breathtaking backdrop, while the bluffs to the east provide a picturesque canvas dotted with lush vegetation. The hills serve as popular recreational spots, with walking trails and parks offering opportunities for outdoor enthusiasts to explore the beauty of Alton’s natural landscape.
River Bluffs
The limestone bluffs in Alton stand as majestic sentinels overlooking the Mississippi River. These towering cliffs, formed over millions of years by the relentless force of the river’s current, create a dramatic and awe-inspiring geological feature. The bluffs provide a unique habitat for a diverse array of plant and animal life, including bald eagles, falcons, and migratory birds. Their sheer faces have been carved by water and wind into intricate patterns, resulting in picturesque rock formations and sheer drops that attract climbers and sightseers alike. The bluffs not only define Alton’s topography but also contribute to its rich ecological and recreational value.
Lambert-St. Louis International Airport (STL)
Located approximately 25 miles north of Alton, Illinois, Lambert-St. Louis International Airport (STL) is the closest major airport to the city. It serves as a hub for Southwest Airlines and offers a wide range of domestic and international destinations, including major cities such as Chicago, Atlanta, Dallas, and Denver. STL’s convenient location just across the Mississippi River from Alton makes it an ideal gateway for both business and leisure travelers.
The airport features modern facilities, including multiple terminals, a variety of dining and shopping options, and ample parking. Ground transportation to and from Alton is easily accessible via rental car, taxi, or ride-sharing services. Additionally, STL offers a direct MetroLink light rail connection to downtown St. Louis, providing a convenient and affordable option for travelers staying in the city.
History and Development:
Alton, Illinois, located on the confluence of the Mississippi and Missouri Rivers, has a rich and storied history. Its strategic location made it an important hub for transportation, trade, and industry in the 19th century. The city was founded in 1818 by Colonel Rufus Easton and quickly grew into a vibrant riverport and manufacturing center. During the Civil War, Alton served as a Union stronghold and played a significant role in the Mississippi Valley campaign. In the following decades, the city continued to develop industrially, with major industries including glass manufacturing, flour milling, and steel production.
Modern Alton:
Today, Alton is a modern city with a population of around 30,000. Despite its industrial past, the city has undergone significant redevelopment and revitalization efforts in recent years. The riverfront area has been transformed into a vibrant mixed-use district with restaurants, shops, and entertainment venues. The city is also home to several historic landmarks, including the Alton Museum of History and Art, the First Presbyterian Church, and the McPike Mansion. Alton is known for its strong arts and culture scene, with a thriving theater, music, and art community. The city also hosts numerous events throughout the year, including the Great River Road Music Festival and the Alton Fourth of July Celebration.