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Contents
- The climate of McAllen
- The best time to visit McAllen
- The worst time to visit McAllen
- Spring weather in McAllen
- Summer weather in McAllen
- Autumn weather in McAllen
- Winter weather in McAllen
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
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.
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 »
Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
McAllen's coldest weather arrives in January, when temperatures average a high of 69.8°F (21°C) and a low of 53.2°F (11.8°C).
How much does it rain?
Throughout the year, there are 103.3 rainfall days, and 12.72" (323mm) of precipitation is accumulated.
When does it snow?
January is the only month when snow falls.
What is the snowiest month?
January is the month with the most snowfall. Snow falls for 0.1 days and accumulates 0.12" (3mm) of snow.
How much does it snow?
Throughout the year, there are 0.1 snowfall days, and 0.12" (3mm) of snow is accumulated.
What is the driest month?
February is the month with the least rainfall in McAllen. Rain falls for 6.3 days and accumulates 0.47" (12mm) of precipitation.
When it does not snow?
In McAllen, snow does not fall in February through December.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the most humid month in McAllen?
With an average relative humidity of 68%, May is the most humid month.
When are the longest days?
With an average of 13h and 48min of daylight, June has the longest days of the year.
What month has the most sunshine in McAllen?
With an average of 11.4h of sunshine, July has the most sunshine of the year.
What are the months with the highest UV index?
July and August, with an average maximum UV index of 8, are months with the highest UV index.
What part of the year is the hottest?
In McAllen, the peak temperatures are generally noted in August, averaging a high of 98.6°F (37°C) and a low of 79.7°F (26.5°C).
What is the least humid month?
August is the least humid month, with an average relative humidity of 59%.
What is the wettest month?
The month with the most rainfall is September, when the rain falls for 15.4 days and typically aggregates up to 2.13" (54mm) of precipitation.
What is the month with the shortest days in McAllen?
With an average of 10h and 30min of daylight, December has the shortest days of the year.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 5.5h of sunshine.
When is the lowest UV index?
With an average maximum UV index of 4, December is the month with the lowest UV index.
Average temperature
McAllen, TX
The warmest month (with the highest average high temperature) is August (98.6°F).
The month with the lowest average high temperature is January (69.8°F).
The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (53.2°F).
Average pressure
McAllen, TX
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
29.98"Hg - Average pressure in April:
29.89"Hg - Average pressure in May:
29.87"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.91"Hg - Average pressure in October:
29.96"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.07"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed
McAllen, TX
- Average wind speed in January:
9.5mph - Average wind speed in February:
10.7mph - Average wind speed in March:
11.9mph - Average wind speed in April:
12.2mph - Average wind speed in May:
12.6mph - Average wind speed in June:
11.4mph
- Average wind speed in July:
12.4mph - Average wind speed in August:
11.1mph - Average wind speed in September:
9.1mph - Average wind speed in October:
9.4mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is May (12.6mph).
The calmest month (with the lowest average wind speed) is September (9.1mph).
Average humidity
McAllen, TX
The month with the highest relative humidity is May (68%).
The month with the lowest relative humidity is August (59%).
Average rainfall
McAllen, TX
- Average rainfall in January:
0.59" - Average rainfall in February:
0.47" - Average rainfall in March:
0.55" - Average rainfall in April:
0.63" - Average rainfall in May:
1.42" - Average rainfall in June:
1.5"
- Average rainfall in July:
1.93" - Average rainfall in August:
0.79" - Average rainfall in September:
2.13" - Average rainfall in October:
0.94" - Average rainfall in November:
0.91" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is September (2.13").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days
McAllen, TX
- Average rainfall days in January:
7.5 days - Average rainfall days in February:
6.3 days - Average rainfall days in March:
8.1 days - Average rainfall days in April:
7.9 days - Average rainfall days in May:
9.3 days - Average rainfall days in June:
9.3 days
- Average rainfall days in July:
6.7 days - Average rainfall days in August:
6.6 days - Average rainfall days in September:
15.4 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
8.2 days
The month with the highest number of rainy days is September (15.4 days).
The month with the least rainy days is February (6.3 days).
Average snowfall
McAllen, TX
The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days
McAllen, TX
- Average snowfall days in January:
0.1 days - Average snowfall days in February:
0 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
McAllen, TX
- Average daylight in January:
10h and 4min - Average daylight in February:
11h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 5min - Average daylight in May:
13h and 2min - Average daylight in June:
13h and 5min
- Average daylight in July:
13h and 4min - Average daylight in August:
13h and 0min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 3min - Average daylight in November:
10h and 5min - Average daylight in December:
10h and 3min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in January:
6h and 5min - Average sunshine in February:
7h and 3min - Average sunshine in March:
7h and 5min - Average sunshine in April:
8h and 2min - Average sunshine in May:
10h and 0min - Average sunshine in June:
11h and 1min
- Average sunshine in July:
11h and 2min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 4min - Average sunshine in October:
7h and 5min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days
McAllen, TX
- Average sunshine days in January:
21.3 days - Average sunshine days in February:
20.2 days - Average sunshine days in March:
20.7 days - Average sunshine days in April:
20.5 days - Average sunshine days in May:
19.3 days - Average sunshine days in June:
19 days
- Average sunshine days in July:
23.5 days - Average sunshine days in August:
23.3 days - Average sunshine days in September:
12.5 days - Average sunshine days in October:
19.9 days - Average sunshine days in November:
19.4 days - Average sunshine days in December:
21 days
The month with the most sunshine days is July (23.5 days).
The month with the least sunshine days is September (12.5 days).
Average UV index
McAllen, TX
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover
McAllen, TX
The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility
McAllen, TX
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
McAllen, Texas, USA
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