Climate and monthly weather forecastMcAllen, TX

The climate of McAllen

McAllen, Texas, is assigned a BSh classification under Köppen climate definition, characterizing it as a subtropical steppe region predominately. This geographical area is marked by high temperatures throughout the year, low levels of precipitation and a warm, arid environment overall.

Throughout the year, McAllen embodies its subtropical steppe features with expansive temperature variations. A wide range exists between the peak summer heat, registering up to 98.6°F (37°C) in August and the cooler winter months which dip to a minimum of 53.2°F (11.8°C) in January. Humidity levels remain fairly consistent, with figures lingering around the mid 60s percentile, reflecting a generally humid environment.

Precipitation remains low during the year with the months of June and September experiencing the most rainfall of approximately 1.93" (49mm) and 2.13" (54mm) respectively. These are also the months with the highest number of rainy days. The climate does not support snowfall, a rarity for this geographical location.

June to August are the months with the longest daylight hours, averaging around 13.6 to 13.8 hours, coupled with optimum visibility of 6 miles. It is also during this period that the area experiences the highest UV index of 8. Wind speeds vary minutely from 9.1mph (14.6km/h) in September to 12.6mph (20.3km/h) in May.

The best time to visit McAllen

Taking into account the temperature, precipitation levels and daylight hours, the months from November to April present the most favorable conditions for tourists. The milder temperatures ranging between 53.2°F (11.8°C) to 82°F (27.8°C) coupled with lower rainfall measures offers comfort and ease while exploring the locality. Also, the UV index is relatively low during these months, hovering between 4 to 6, making outdoor daytime activities more enjoyable and healthier.

The worst time to visit McAllen

Summer months, that is from May to October, are generally considered less appealing for tourists mainly due to high temperatures which can reach up to 98.6°F (37°C) in August, coupled with high levels of humidity. The rainfall measures are also at their peak, particularly in June and September with 1.93" (49mm) and 2.13" (54mm), making outdoor activities less enjoyable.

Spring weather in McAllen

Come spring, McAllen experiences an increase in temperatures with highs stretching from 69.8°F (21°C) to 88.5°F (31.4°C), accompanied by an uptick in rainfall levels that ranges from 0.47" (12mm) to 0.63" (16mm). This marks the departure from the cooler winter season and the arrival of the characteristic warm, arid climate. The relatively moderate weather conditions and blooming flora make this a vivid and pleasant time to visit McAllen, Texas.

Summer weather in McAllen

In McAllen, summer days are scorching with a peak temperature soaring up to 98.6°F (37°C) in August. At the same time, it is the season with the longest daylight hours (13.8 hours in June), making it the brightest time of the year. Despite the heat, these months also yield the highest UV index of 8, making sun protection crucial for any outdoor activities.

Autumn weather in McAllen

Autumn ushers in a gradual decline in the hot summer temperatures with the highs varying from 92.7°F (33.7°C) in September to 77.7°F (25.4°C) in November. The highest rainfall level is recorded in September with 2.13" (54mm) before gradually trailing off towards winter. The daylight hours also begin to shorten, marking the onset of the cooler end of the year.

Winter weather in McAllen

Winter in McAllen is markedly different than one would typically expect, with temperatures only dipping to a still mild 53.2°F (11.8°C) in January. Precipitation remains low with an average of 0.87" (22mm) in December and still less in January. Daylight hours are at their shortest, averaging 10.5 hours in December. Despite these changes, the climate remains relatively warm, offering a unique winter experience in McAllen, Texas.

Weather in January

As the calendar flips to a new year, the month of January in McAllen, Texas experiences a dip in temperature compared to December and February. The month is noticed for its marginally cooler climate, offering an escape from intense heat for inhabitants and visitors. Weather in January »

Weather in February

Moving into February, there is an obvious increase in temperature in McAllen, Texas, which proceeds until July. The slight climb in temperature, however, is insufficient to create discomfort. February's weather exhibits a shift from the cooler dry state experienced in January. Weather in February »

Weather in March

By March, the city of McAllen, Texas starts to warm up, informing of the steady approach of spring. The weather in March is largely predictable with no unexpected extremes of hot or cold. The days in March are noticeably longer, resulting in more sunlight and slightly higher temperatures than the previous months. Weather in March »

Weather in April

As April takes over, McAllen, Texas continues with its gradual temperature rise, moving farther from the winter cold. This month proves to be warm yet comfortable, promoting outdoor adventures to enjoy the spring season. The rainfall in April is higher than in the previous month, measuring an average of 0.63" (16mm). Weather in April »

Weather in May

May in McAllen, Texas presents the onset of summer as temperatures continue to scale upwards. This period indicates a significant shift in weather while retaining the charm of long daylight hours. The daylight span further extends to 13.4 hours in May, offering ample hours of sunshine. Weather in May »

Weather in June

June in McAllen, Texas marks the beginning of true summer, with temperatures reaching their high point and sunlight at its peak. The month experiences relatively high humidity alongside rising temperatures. However, this change does not disrupt daily routines or affect outdoor activities. Weather in June »

Weather in July

In July, McAllen, Texas witnesses a further hike in temperature, marking the peak of summer. Even though the heat might seem daunting, the city remains lively with bustling outdoor activities. Mercifully, July also reports the highest wind speed of the year at 13.4mph (21.6km/h), creating a soothing environment amidst the scorching heat. Weather in July »

Weather in August

As August sets in, McAllen, Texas faces the last stretch of the summer months. The weather marks a period of high temperature, slightly falling from the peak experienced in July. Despite the heat, it remains a much-loved period for outdoor activities with longer daylight hours. Weather in August »

Weather in September

Come September, McAllen, Texas starts cooling down, signaling the subtle onset of autumn. The temperatures retreat from the summer highs, offering respite from the heat experienced in the past few months. Notably, rainfall experiences a sudden surge, reaching the highest level of the year at 2.13" (54mm). Weather in September »

Weather in October

With the arrival of October, autumn is fully established in McAllen, Texas. Temperatures continue to decrease, setting the perfect stage for pleasant fall weather. Sunshine hours also reduce but remain sufficiently long to enjoy the mild outdoor weather. Weather in October »

Weather in November

In November, winters start knocking on McAllen, Texas's door. The mild temperatures, shorter days, and cooler weather make a perfect blend, setting the stage for the year's end festivities. While the rainfall continues to be low at 0.91" (23mm), the wind speeds rise, reaching an average of 9.8mph (15.8km/h) for the month. Weather in November »

Weather in December

Finally, McAllen, Texas welcomes December and, along with it, the full swing of winter. Commencing the last month of the year, the city observes cooler temperatures and reduced daylight hours. Rainfall rates persist around the same level experienced in November, ensuring that the festive spirit remains high. Weather in December »