McAllen Climate by Month
McAllen, Texas, United States
Very hot summers and mild winters, with rain spread through the year.
The climate in McAllen is one of very hot summers and mild winters, with rain spread through the year. Expect highs of 99°F (37°C) in August and 71°F (22°C) in January, with the coldest nights (January) near 50°F (10°C). It gets 23 in (581 mm) of rain a year, spread across the months.
- Warmest month
- 99°F(37°C)
- Average high, August
- Coldest nights
- 50°F(10°C)
- Average low, January
- Rain per year
- 23 in(581 mm)
- No clear rainy season
- Humidity
- 66%
- Sunniest: July
Best and worst months in McAllen
Best for weatherFebruary and December are the best time for weather in McAllen: highs near 75°F (24°C) and about 1.0 in (27 mm) of rain a month.
Least pleasantJuly and September are the least pleasant; July is the hottest, with highs of 97°F (36°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in February.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
McAllen weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 71°F(22°C) | 50°F(10°C) | 1.0 in(26 mm) | 67% | 3.0 |
| FebFebruaryBest | 76°F(25°C) | 54°F(12°C) | 0.9 in(23 mm) | 66% | 3.6 |
| MarMarch | 82°F(28°C) | 59°F(15°C) | 0.8 in(21 mm) | 66% | 4.3 |
| AprApril | 88°F(31°C) | 65°F(19°C) | 1.2 in(30 mm) | 64% | 5.2 |
| MayMay | 92°F(33°C) | 71°F(22°C) | 2.5 in(63 mm) | 68% | 5.8 |
| JunJune | 96°F(36°C) | 75°F(24°C) | 2.6 in(66 mm) | 67% | 6.1 |
| JulJuly | 97°F(36°C) | 76°F(24°C) | 2.8 in(71 mm) | 65% | 6.3 |
| AugAugust | 99°F(37°C) | 76°F(25°C) | 1.5 in(39 mm) | 63% | 6.0 |
| SepSeptember | 94°F(34°C) | 73°F(23°C) | 4.5 in(114 mm) | 67% | 5.0 |
| OctOctober | 88°F(31°C) | 66°F(19°C) | 2.6 in(65 mm) | 66% | 4.3 |
| NovNovember | 80°F(27°C) | 58°F(14°C) | 1.3 in(33 mm) | 67% | 3.3 |
| DecDecemberBest | 73°F(23°C) | 51°F(11°C) | 1.2 in(30 mm) | 69% | 2.8 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate outside the United States
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