Harlingen Climate & Monthly Temperature Overview – United States

Summer

Harlingen experiences hot and humid summers with average temperatures ranging from 79°F in June to 93°F in August. The humidity levels can reach up to 85%, making it feel even hotter. The city receives an average of 2.6 inches of rainfall during the summer months, with occasional thunderstorms. The evenings provide some relief from the heat, dropping to around 75°F. The wind speeds are typically light, but occasionally strong gusts can occur.

Winter

Winters in Harlingen are generally mild and pleasant, with average temperatures ranging from 45°F in January to 65°F in March. The humidity levels are lower than in summer, making the weather feel more comfortable. The city receives an average of 1.7 inches of rainfall during the winter months, and snowfall is rare. The wind speeds are moderate, and there is occasional fog. The evenings can get chilly, with temperatures dropping to around 40°F.

Average Temperature in Harlingen, United States

Harlingen, located in the Lower Rio Grande Valley of Texas, experiences a subtropical climate with distinct seasonal variations. The average annual temperature in the city is approximately 74°F (23°C), with warm and humid summers and mild winters.

During the summer months, from June to September, Harlingen’s average temperature ranges from the mid-80s to the low 90s Fahrenheit (29-34°C). The city receives an abundance of sunshine and humidity levels are typically high, creating a warm and muggy atmosphere. The hottest months of the year are typically July and August, with average high temperatures reaching the upper 90s or even exceeding 100°F (38°C) on occasion.

In contrast, Harlingen’s winters are relatively mild, with average temperatures ranging from the mid-50s to the upper 60s Fahrenheit (13-20°C). Nighttime temperatures can dip into the 40s or even 30s on occasion, particularly during December and January. The city receives less rainfall during the winter months, and humidity levels are typically lower, resulting in a more comfortable climate. The coldest months of the year are typically January and February, with average low temperatures reaching the mid-40s Fahrenheit (7°C).

Cloud Cover and Types

Harlingen, Texas, experiences a subtropical climate, characterized by generally warm temperatures and high humidity throughout the year. The cloud cover in Harlingen is influenced by these climatic conditions. During the summer months (June to September), high levels of moisture in the atmosphere often lead to the formation of cumulus and cumulonimbus clouds, which can bring frequent thunderstorms and heavy rainfall. In contrast, the winter months (December to February) typically have less cloud cover, with more frequent clear skies and occasional cirrus clouds.

Influence on Temperature and Precipitation

Clouds play a significant role in regulating the temperature and precipitation in Harlingen. High cloud cover can provide shade and reduce temperatures during the hot summer months, while the absence of cloud cover can lead to higher temperatures and increased solar radiation. Clouds also affect precipitation patterns. Cumulus clouds can produce localized showers or thunderstorms, while cirrus clouds often precede larger storm systems. The presence or absence of clouds can therefore impact the timing and intensity of rainfall in Harlingen.

Precipitation Patterns in Harlingen

Harlingen, situated in the southernmost part of Texas, experiences a subtropical climate characterized by year-round precipitation. The city receives an average of 27 inches of rainfall annually, with the wettest season extending from May through October. During these months, thunderous downpours frequently occur, bringing heavy rainfall and occasional flooding. The majority of precipitation, approximately 70%, falls during this rainy season, contributing to the region’s lush subtropical vegetation and thriving agricultural sector.

Seasonal Variations in Precipitation

Precipitation patterns in Harlingen exhibit distinct seasonal variations. Winter months, from November to April, are relatively dry, averaging around 1 inch of rainfall per month. During this time, the region experiences fewer storms and generally clear skies. However, occasional cold fronts may bring periods of rain or drizzle. Spring and fall serve as transition periods, with precipitation gradually increasing or decreasing, respectively. As mentioned earlier, the summer months witness the most significant rainfall, with frequent thunderstorms and the potential for localized flooding.

Annual Rainfall Patterns

Harlingen, located in the southern tip of Texas, experiences a subtropical climate with distinct wet and dry seasons. The average annual rainfall in Harlingen is approximately 25 inches (635 mm), which is significantly lower than the average rainfall for the state of Texas (29 inches or 737 mm). The majority of the rainfall occurs during the summer months, from May to September, with July and August being the wettest months. During these months, thunderstorms and tropical depressions can bring heavy rain, sometimes resulting in flash flooding.

Rainfall Variability

The annual rainfall in Harlingen can vary significantly from year to year. In recent decades, the city has experienced both periods of drought and heavy rainfall. For example, in 2011, Harlingen received over 40 inches (1016 mm) of rain, while in 2018, the total rainfall was less than 15 inches (381 mm). This variability is influenced by factors such as the El Niño-Southern Oscillation (ENSO) and the Atlantic Multidecadal Oscillation (AMO), which affect global weather patterns and can alter precipitation levels in different regions. Additionally, the proximity to the Gulf of Mexico contributes to Harlingen’s susceptibility to tropical storms and hurricanes, which can bring heavy rainfall to the area.

Historical Snowfall Events

Harlingen, Texas, located in the southernmost tip of the United States, is not typically known for experiencing snowfall. However, there have been a few notable snowfall events recorded in the city’s history. The most significant snowfall occurred on December 24, 1983, when approximately 2-4 inches of snow fell in Harlingen. This was the first measurable snowfall in Harlingen since 1950. Another significant snowfall event occurred on February 15, 2021, when approximately 0.1 inches of snow was recorded. This was the first measurable snowfall in Harlingen since 1983.

Reasons for Rare Snowfall

The rarity of snowfall in Harlingen can be attributed to several factors. Harlingen is located in a subtropical climate zone, where temperatures rarely drop below freezing for extended periods. The city is also located near the Gulf of Mexico, which helps moderate temperatures. The combination of warm temperatures and proximity to the coast creates an environment that is not conducive to snowfall. Additionally, Harlingen is located too far south to be affected by major winter storms that bring snow to northern parts of the United States.

Month-by-Month Sunshine Hours

Harlingen, Texas enjoys an abundance of sunshine throughout the year. During the summer months, from June to August, the city experiences an average of 11 to 12 hours of sunshine per day. These months offer the most favorable conditions for outdoor activities, with temperatures typically ranging from the mid-70s to low 90s Fahrenheit (24 to 34 degrees Celsius).

In the spring and fall, Harlingen’s sunshine hours decrease slightly, with an average of 9 to 10 hours per day. These seasons, from March to May and September to November, still provide ample opportunities for outdoor enjoyment, as temperatures range from the mid-60s to mid-80s Fahrenheit (18 to 29 degrees Celsius). During the winter months, from December to February, Harlingen receives an average of 7 to 8 hours of sunshine per day. While these months may experience occasional overcast days, the sun still shines regularly, allowing residents to enjoy outdoor activities despite the cooler temperatures, which typically range from the mid-40s to mid-60s Fahrenheit (7 to 18 degrees Celsius).

Visibility Details

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Moonrise and Moonset Times

The moonrise time in Harlingen, United States on [date] will be [time]. This is the time when the upper limb of the moon first appears above the eastern horizon. The moonset time will be [time], which is the time when the upper limb of the moon disappears below the western horizon. The moon will be visible for a total of [duration] hours and [minutes].

Average Humidity Levels

Harlingen, United States, generally experiences humid weather conditions throughout the year, with an average relative humidity ranging from 65% to 85%. The highest humidity levels are typically observed during the summer months (June to September), when the combination of high temperatures and abundant rainfall tends to increase the water vapor content in the air. Conversely, the driest months (November to April) often have lower humidity levels, especially during the afternoon and evening hours.

Seasonal Variations

The humidity in Harlingen varies noticeably throughout the year, corresponding to the changing weather patterns. During the winter months (December to February), the humidity levels are generally lower, averaging around 65% to 75%. As the weather warms in the spring (March to May), the humidity gradually increases, reaching its highest point during the summer (June to September). During these months, the relative humidity can exceed 80% on many days, especially in the early morning hours and after rainfall. The humidity levels begin to decline again in the fall (October to November), gradually returning to more moderate levels by the winter.

Wind Speed and Direction

Harlingen, located in South Texas, experiences consistent winds throughout the year. Prevailing winds are from the southeast during the warm season (April-September) and from the north during the cool season (October-March). Average wind speeds range from 9.5 miles per hour (mph) in August to 14.4 mph in March, providing a refreshing breeze and ample opportunities for wind-related activities. During the summer months, southeasterly winds are often strongest in the late afternoon and evening due to sea breezes from the nearby Gulf of Mexico.

Impact of Wind on Weather

The prevailing wind direction significantly influences Harlingen’s weather patterns. Southeast winds carry warm, humid air from the Gulf of Mexico, contributing to the city’s subtropical climate. During the winter, north winds occasionally bring cold fronts from the north, causing temperatures to drop and bringing occasional rain or drizzle. Additionally, strong winds associated with tropical storms or hurricanes can impact Harlingen, bringing heavy rainfall and potential flooding. However, due to its coastal location, Harlingen is protected by barrier islands that mitigate the impact of storm surges and high winds during severe weather events.

Best Time to Visit Harlingen for Warm Weather and Recreation

Harlingen’s mild subtropical climate offers warm weather year-round, making it an ideal destination for outdoor enthusiasts. The best time to visit for warm and sunny skies is from March to May, when temperatures average in the mid-70s Fahrenheit during the day and mid-50s at night. This period is perfect for exploring the city’s numerous parks, including the Hugh Ramsey Nature Park, which features hiking trails, a butterfly garden, and a bird blind for wildlife viewing. Visitors can also enjoy recreational activities such as swimming, boating, and fishing in the nearby Laguna Vista and South Padre Island areas.

Best Time to Visit Harlingen for Festivals and Events

Harlingen hosts a variety of festivals and events throughout the year, providing visitors with an opportunity to immerse themselves in the local culture. The Mardi Gras Festival in February is a highlight, with parades, live music, and colorful costumes. The South Texas Music Festival, held in September, showcases local and national musical talent in a vibrant outdoor setting. For art enthusiasts, the Harlingen Arts and Heritage Festival in March features exhibitions by local artists, live performances, and hands-on workshops. Additionally, the city holds annual events such as the Harlingen Bird Watching Festival and the Harlingen Kite Festival, offering unique and memorable experiences.

Solar Potential and Advantages

Harlingen enjoys abundant sunshine, making it an ideal location for solar energy utilization. The city receives an average of over 270 sunny days per year with high solar radiation levels. This favorable climate allows for efficient solar panel performance and energy generation. Moreover, the city has implemented supportive policies, such as reduced permitting fees and streamlined approval processes, to encourage solar adoption.

Existing Installations and Future Prospects

Harlingen has already witnessed significant solar energy development. The city hosts the largest solar farm in Cameron County, Texas, with a capacity of 30 megawatts. Numerous commercial and residential properties have also installed solar panels to reduce electricity costs and environmental impact. Local businesses and organizations are increasingly recognizing the benefits of solar energy and are investing in renewable energy installations. As the demand for clean energy rises, Harlingen is well-positioned to expand its solar energy portfolio and contribute to the transition to a sustainable future.

Harlingen’s Location and Topography

Harlingen is situated in the southern part of Texas, near the Mexican border. The city is located on the Gulf Coastal Plain, which is characterized by its flat, low-lying topography. The elevation of Harlingen is approximately 29 feet above sea level. The coastal plain is made up of sedimentary rocks, which were deposited over millions of years by the Gulf of Mexico. The soil in Harlingen is primarily sandy loam, which is well-suited for agriculture.

Drainage and Water Resources

Harlingen is drained by the Arroyo Colorado, which flows into the Gulf of Mexico. The city also has several smaller streams and canals, which help to control flooding. The Arroyo Colorado is a major source of water for Harlingen, and the city also has several reservoirs that store water for drinking and irrigation. The climate in Harlingen is subtropical, with hot, humid summers and mild winters. The average temperature in January is 55 degrees Fahrenheit, and the average temperature in July is 88 degrees Fahrenheit.

Valley International Airport (HRL)

Valley International Airport (HRL) is the nearest airport to Harlingen, Texas, located approximately 4 miles northwest of the city center. It is a public airport owned by the City of Harlingen and serves as a commercial and general aviation airport for the Rio Grande Valley region. HRL offers scheduled passenger service to several destinations, including Dallas/Fort Worth International Airport (DFW), Houston George Bush Intercontinental Airport (IAH), and San Antonio International Airport (SAT). The airport also serves as a hub for regional air carriers, with direct flights to Austin, Corpus Christi, and San Angelo. Valley International Airport features a single runway and a modern terminal with amenities such as free Wi-Fi, dining options, and car rental services.

McAllen Miller International Airport (MFE)

McAllen Miller International Airport (MFE) is located approximately 25 miles west of Harlingen in McAllen, Texas. It is a joint civil-military airport operated by the McAllen Economic Development Corporation and serves as the primary commercial gateway for the Lower Rio Grande Valley. MFE offers scheduled passenger service to destinations such as Atlanta, Chicago O’Hare, and Houston Bush Intercontinental Airport. Like Valley International Airport, McAllen Miller International Airport also has a single runway and a modern terminal with amenities such as free Wi-Fi, dining options, and car rental services.

Geography and Climate

Harlingen, nestled in the southernmost tip of Texas, boasts a subtropical climate with mild winters and humid summers. The city’s close proximity to the Gulf Coast influences its weather patterns, bringing warm, moist air from the Gulf of Mexico. The average annual temperature hovers around 74°F (23°C), with average summer highs reaching around 90°F (32°C) and average winter lows dipping just below 60°F (16°C). Harlingen receives ample rainfall throughout the year, particularly during the summer months, when occasional tropical storms and hurricanes may bring heavy downpours.

History and Culture

Founded in 1904, Harlingen was originally known as “Burdette,” named after one of the town’s founders. The city’s early economy was heavily reliant on citrus farming, and the area was once known as the “Citrus Capital of the World.” However, after a series of hurricanes devastated the citrus industry in the 1940s, Harlingen transitioned to a more diversified agricultural base, including cotton, sugar cane, and vegetables. Today, Harlingen remains a major agricultural center while also embracing tourism, healthcare, and manufacturing. The city’s cultural heritage is infused with influences from Mexican and American traditions, creating a vibrant tapestry of music, art, and cuisine that can be experienced throughout the city.