Climate and monthly weather forecastWeslaco, TX
Climate and monthly weather forecast
Weather in January
January, like December, is another pleasant winter month in Weslaco, Texas, with an average temperature ranging between max 69.6°F (20.9°C) and min 54.1°F (12.3°C). The coldest period is January, when temperatures fluctuate between an average high of 69.6°F (20.9°C) and a low of 54.1°F (12.3°C). Weather in January »Weather in February
The last month of the winter, February, is a warm month in Weslaco, Texas, with temperature in the range of an average high of 74.8°F (23.8°C) and an average low of 58.1°F (14.5°C). February reports an average high-temperature of a moderately hot 74.8°F (23.8°C), slightly varied from January's 69.6°F (20.9°C). Weather in February »Weather in March
The first month of the spring, March, is still a warm month in Weslaco, Texas, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 81°F (27.2°C). March's onset brings a minor rise in the average high-temperature, moving from 74.8°F (23.8°C) in February to a still moderately hot 81°F (27.2°C). Weather in March »Weather in April
April is a hot spring month in Weslaco, Texas, with an average temperature ranging between min 68.4°F (20.2°C) and max 87.3°F (30.7°C). April showcases a minor temperature ascent, adjusting from March's warm 81°F (27.2°C) to a hot 87.3°F (30.7°C). Weather in April »Weather in May
The last month of the spring, May, is also a hot month in Weslaco, Texas, with an average temperature ranging between max 90.9°F (32.7°C) and min 72.9°F (22.7°C). In May, Weslaco experiences a minor shift in meteorological conditions with average high-temperatures marked at a still tropical 90.9°F (32.7°C), closely mirroring the climate in April. Weather in May »Weather in June
June, the first month of the summer in Weslaco, is still a hot month, with an average temperature fluctuating between 94.3°F (34.6°C) and 76.3°F (24.6°C). Weslaco marks the onset of June with an average high-temperature of a still tropical 94.3°F (34.6°C), a subtle shift from May's 90.9°F (32.7°C). Weather in June »Weather in July
July in Weslaco, Texas, is a sweltering summer month, with temperature in the range of an average low of 77.5°F (25.3°C) and an average high of 96.4°F (35.8°C). Weslaco marks the start of July with an average high-temperature of a fiery hot 96.4°F (35.8°C), hinting at a slight fluctuation from June's 94.3°F (34.6°C). Weather in July »Weather in August
August, the last month of the summer in Weslaco, is another torrid month, with an average temperature ranging between min 79.3°F (26.3°C) and max 97.9°F (36.6°C). The warmest temperatures occur during August, when averages reach a peak of 97.9°F (36.6°C) and a low of 79.3°F (26.3°C). In August, the heat index is computed to be a burning hot 123.8°F (51°C). Weather in August »Weather in September
The first month of the autumn, September, is still a hot month in Weslaco, Texas, with an average temperature fluctuating between 77.4°F (25.2°C) and 92.5°F (33.6°C). The shift from August to September coincides with a small decrease in the average high-temperature, down to a hot 92.5°F (33.6°C) from a very hot 97.9°F (36.6°C). Weather in September »Weather in October
October, like September, is a hot autumn month in Weslaco, Texas, with an average temperature ranging between min 70.7°F (21.5°C) and max 86.9°F (30.5°C). October signifies a minor drop in average high-temperature, transitioning from a tropical 92.5°F (33.6°C) in September to a still hot 86.9°F (30.5°C). Weather in October »Weather in November
November, the last month of the autumn in Weslaco, is also a moderately hot month, with an average temperature fluctuating between 77.4°F (25.2°C) and 62.1°F (16.7°C). A shift in Weslaco's weather is observed as October turns into November, with the average high temperature reducing from a tropical 86.9°F (30.5°C) to a moderately hot 77.4°F (25.2°C). Weather in November »Weather in December
The first month of the winter, December, is still a pleasant month in Weslaco, Texas, with temperature in the range of an average high of 71.2°F (21.8°C) and an average low of 56.3°F (13.5°C). In December, the average high-temperature marginally drops from a warm 77.4°F (25.2°C) in November to a pleasant 71.2°F (21.8°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Weslaco, TX
The warmest month (with the highest average high temperature) is August (97.9°F).
The month with the lowest average high temperature is January (69.6°F).
The month with the highest average low temperature is August (79.3°F).
The coldest month (with the lowest average low temperature) is January (54.1°F).
Average pressure
Weslaco, TX
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
29.99"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
Weslaco, TX
- Average wind speed in January:
9.4mph - Average wind speed in February:
10.6mph - Average wind speed in March:
11.7mph - Average wind speed in April:
11.7mph - Average wind speed in May:
11.7mph - Average wind speed in June:
10.5mph
- Average wind speed in July:
11.4mph - Average wind speed in August:
10.3mph - Average wind speed in September:
8.5mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.4mph
The windiest months (with the highest average wind speed) are March, April and May (11.7mph).
The calmest month (with the lowest average wind speed) is September (8.5mph).
Average humidity
Weslaco, TX
The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (61%).
Average rainfall
Weslaco, TX
- Average rainfall in January:
0.63" - Average rainfall in February:
0.43" - Average rainfall in March:
0.59" - Average rainfall in April:
0.67" - Average rainfall in May:
1.38" - Average rainfall in June:
1.65"
- Average rainfall in July:
2.01" - Average rainfall in August:
0.87" - Average rainfall in September:
2.01" - Average rainfall in October:
1.1" - Average rainfall in November:
0.83" - Average rainfall in December:
0.83"
The wettest months (with the highest rainfall) are July and September (2.01").
The driest month (with the least rainfall) is February (0.43").
Average rainfall days
Weslaco, TX
- Average rainfall days in January:
7.8 days - Average rainfall days in February:
6.6 days - Average rainfall days in March:
7.8 days - Average rainfall days in April:
8.2 days - Average rainfall days in May:
8.5 days - Average rainfall days in June:
9.8 days
- Average rainfall days in July:
6.4 days - Average rainfall days in August:
6.8 days - Average rainfall days in September:
14.4 days - Average rainfall days in October:
9.7 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
8.3 days
The month with the highest number of rainy days is September (14.4 days).
The month with the least rainy days is July (6.4 days).
Average snowfall
Weslaco, 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
Weslaco, 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
Weslaco, TX
- Average daylight in January:
10h and 42min - Average daylight in February:
11h and 18min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 48min - Average daylight in May:
13h and 24min - Average daylight in June:
13h and 48min
- Average daylight in July:
13h and 36min - Average daylight in August:
13h and 0min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 30min - Average daylight in November:
10h and 54min - Average daylight in December:
10h and 30min
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 24min - Average sunshine in February:
7h and 6min - Average sunshine in March:
7h and 30min - Average sunshine in April:
8h and 6min - Average sunshine in May:
9h and 36min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
11h and 6min - Average sunshine in August:
9h and 42min - Average sunshine in September:
8h and 18min - Average sunshine in October:
7h and 36min - Average sunshine in November:
5h and 30min - Average sunshine in December:
5h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days
Weslaco, TX
- Average sunshine days in January:
21 days - Average sunshine days in February:
19.4 days - Average sunshine days in March:
21.8 days - Average sunshine days in April:
20.3 days - Average sunshine days in May:
20.4 days - Average sunshine days in June:
18.9 days
- Average sunshine days in July:
23.8 days - Average sunshine days in August:
23.3 days - Average sunshine days in September:
13.8 days - Average sunshine days in October:
20 days - Average sunshine days in November:
19.3 days - Average sunshine days in December:
21 days
The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is September (13.8 days).
Average UV index
Weslaco, 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
Weslaco, TX
The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility
Weslaco, 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).





