Climate averages 1991–2020
McAllen weather
in October.
A hot, moderately wet month: the 7th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a hot month in McAllen: daytime highs average 30.1°C and nights cool to about 20.5°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 59 mm of rain on roughly 7 days, which makes October a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 34 min on an average October day.
The nearest other city in this atlas is Mission (10 km away). In October its highs average 30.2°C, about as warm as McAllen, with 59 mm of rain.
Among the 498 cities listed in the United States, McAllen ranks joint 14th of 498 for the warmest October highs and joint 174th of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; McAllen is 8.7°C warmer than that mean.
From October to November, average highs fall by 4.4°C to 25.7°C, and monthly rainfall falls from 59 mm to 35 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
McAllen climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 21.8°C12.1°C | 12.1°C | 26 | 4.4 | 10.711 h |
| February | 24.4°C14.1°C | 14.1°C | 24 | 4.4 | 11.311 h |
| March | 27.2°C16.8°C | 16.8°C | 36 | 5.2 | 12.012 h |
| April | 30.5°C19.9°C | 19.9°C | 44 | 5.3 | 12.813 h |
| May | 33.0°C23.1°C | 23.1°C | 55 | 6.6 | 13.413 h |
| June | 34.9°C25.1°C | 25.1°C | 51 | 7.0 | 13.714 h |
| July | 35.6°C25.5°C | 25.5°C | 55 | 5.7 | 13.614 h |
| August | 35.9°C25.7°C | 25.7°C | 39 | 6.7 | 13.113 h |
| September | 32.5°C23.8°C | 23.8°C | 88 | 11.8 | 12.312 h |
| October, selected | 30.1°C20.5°C | 20.5°C | 59 | 6.7 | 11.612 h |
| November | 25.7°C16.2°C | 16.2°C | 35 | 5.3 | 10.911 h |
| December | 22.5°C13.0°C | 13.0°C | 30 | 5.1 | 10.511 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Mission in OctoberUnited States · 10 kmHigh 30.2°C · Low 20.5°C · 59 mm rain
- Edinburg in OctoberUnited States · 13 kmHigh 30.1°C · Low 20.5°C · 59 mm rain
- Reynosa in OctoberMexico · 15 kmHigh 30.2°C · Low 20.6°C · 60 mm rain
- Ciudad Río Bravo in OctoberMexico · 28 kmHigh 29.9°C · Low 20.7°C · 62 mm rain
- Heroica Matamoros in OctoberMexico · 81 kmHigh 28.4°C · Low 21.8°C · 72 mm rain
- Nuevo Laredo in OctoberMexico · 191 kmHigh 30.0°C · Low 19.8°C · 44 mm rain
- Corpus Christi in OctoberUnited States · 196 kmHigh 27.7°C · Low 20.0°C · 82 mm rain
- Ciudad Benito Juárez in OctoberMexico · 196 kmHigh 26.8°C · Low 17.3°C · 49 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for McAllen) is explained once on the McAllen year overview and on the Sources, method and limits page.
Edinburg and Mission lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.