McAllen, TX Weather
McAllen hourly forecast: next 24 hours
Today's high of 103°F (39°C) is about 7°F (4°C) above the typical July high of 96°F (36°C).
Current conditions in detail
McAllen weather tomorrow (Saturday, July 18)
Tomorrow in McAllen looks sunny, with a high of 99° and an overnight low of 78°. Rain is unlikely (4% chance). Winds top out near 21 mph, and the UV index reaches 9 (very high).
McAllen 14-day forecast
About the weather in McAllen
Located in Texas, United States, McAllen experiences a humid subtropical climate with hot, humid summers and generally mild winters. Afternoon temperatures peak near 98°F (36°C) in August and dip to about 71°F (22°C) in January, with around 27.7 inches (703 mm) of precipitation falling across the year.
McAllen weather: quick facts
- Hottest month: August - highs near 98°F (36°C)
- Coldest month: January - highs near 71°F (22°C)
- Record high: 108°F (42°C) · Record low: 23°F (-5°C) (2015–2024)
- Wettest month: September (12 rainy days) · Sunniest: August (12.2 h sun/day)
- Climate type: humid subtropical - hot, humid summers and generally mild winters
Temperatures through the year
The warmest stretch of the year centers on August. Highs average 98°F (36°C) and overnight lows stay near 80°F (26°C). The coolest month is January, with typical highs of 71°F (22°C) and lows around 53°F (12°C). Based on 2015–2024 weather data, temperatures have reached as high as 108°F (42°C) and dropped as low as 23°F (-5°C).
Rain, sun and snow
September is usually the wettest month. It brings about 3.6 inches (92 mm) of rain over 12 days, while February is the driest. August brings the most sunshine, averaging 12.2 hours of sun a day.
Season by season
Spring (March through May)
Spring in McAllen runs hot, with daytime highs averaging 87°F (30°C) and nights around 69°F (21°C); expect showers on roughly 24 days across the season. With the humidity factored in, afternoons often feel hotter than the thermometer reads - run the numbers through the humidity and dew point converter to see why.
Summer (June through August)
Summer in McAllen is intensely hot, with daytime highs averaging 96°F (36°C) and nights around 79°F (26°C); expect showers on roughly 24 days across the season.
Fall (September through November)
Fall in McAllen runs hot, with daytime highs averaging 86°F (30°C) and nights around 70°F (21°C); expect showers on roughly 28 days across the season.
Winter (December through February)
Winter in McAllen is pleasantly warm, with daytime highs averaging 74°F (23°C) and nights around 56°F (13°C); rain falls on about 17 days over the three months.
Average temperatures in McAllen by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 71° | 53° | 6 | 1.3 in | 7.4 h/day | 68% |
| February | 76° | 57° | 5 | 1.0 in | 8.2 h/day | 69% |
| March | 82° | 64° | 6 | 1.9 in | 8.5 h/day | 69% |
| April | 87° | 69° | 8 | 2.4 in | 9.7 h/day | 69% |
| May | 91° | 74° | 10 | 3.3 in | 11.2 h/day | 72% |
| June | 94° | 77° | 10 | 3.4 in | 12.0 h/day | 70% |
| July | 96° | 79° | 7 | 3.3 in | 12.1 h/day | 67% |
| August | 98° | 80° | 8 | 1.7 in | 12.2 h/day | 65% |
| September | 92° | 76° | 12 | 3.6 in | 10.4 h/day | 71% |
| October | 88° | 70° | 8 | 2.5 in | 9.7 h/day | 68% |
| November | 79° | 62° | 8 | 2.2 in | 7.9 h/day | 71% |
| December | 75° | 57° | 5 | 1.1 in | 7.5 h/day | 71% |