McAllen, TX
Climate overview — based on NOAA 1991-2020 normals from MCALLEN, TX US.
Year-round temperatures (°F)
Climate summary
McAllen has an annual average temperature of 75.5°F with about 18.7 inches of precipitation per year. The warmest month is August (average high 98.9°F), and the coldest is January (average low 49.4°F). September is typically the wettest month (3.81 in) and December the driest (0.57 in).
Best time to visit McAllen
Full guide →Climate change signal
All-time records →74 of 366 (20.2%) of McAllen's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1940s | 52 | |
| 1950s | 36 | |
| 1960s | 28 | |
| 1970s | 25 | |
| 1980s | 31 | |
| 1990s | 28 | |
| 2000s | 59 | |
| 2010s | 67 | |
| 2020s | 40 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 71.4°F | 49.4°F | 60.4°F | 0.65 in | — | 3 |
| February | 76.2°F | 53.4°F | 64.8°F | 0.64 in | — | 3 |
| March | 81.5°F | 59.2°F | 70.3°F | 1.04 in | — | 4 |
| April | 86.8°F | 65.4°F | 76.1°F | 1.37 in | — | 4 |
| May | 91.6°F | 71.4°F | 81.5°F | 1.39 in | — | 3 |
| June | 96.4°F | 75.6°F | 86.0°F | 3.05 in | — | 4 |
| July | 97.5°F | 76.7°F | 87.1°F | 1.62 in | — | 3 |
| August | 98.9°F | 77.0°F | 88.0°F | 1.45 in | — | 4 |
| September | 94.0°F | 73.4°F | 83.7°F | 3.81 in | — | 6 |
| October | 89.1°F | 66.4°F | 77.8°F | 2.04 in | — | 4 |
| November | 79.5°F | 57.3°F | 68.4°F | 1.05 in | — | 3 |
| December | 72.6°F | 50.7°F | 61.7°F | 0.57 in | 0.1 in | 3 |
Climate twins of McAllen
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).