Climate averages 1991–2020
McKinney weather
in October.
A warm, wet month: the 6th warmest and the 9th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
October is a warm month in McKinney: daytime highs average 24.4°C and nights cool to about 14.9°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 104 mm of rain on roughly 8 days, which makes October a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 23 min on an average October day.
The nearest other city in this atlas is Allen (12 km away). In October its highs average 24.5°C, about as warm as McKinney, with 99 mm of rain.
Among the 498 cities listed in the United States, McKinney ranks joint 183rd of 498 for the warmest October highs and joint 437th of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; McKinney is 3.1°C warmer than that mean.
From October to November, average highs fall by 6.5°C to 17.9°C, and monthly rainfall falls from 104 mm to 94 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
McKinney climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.2°C3.0°C | 3.0°C | 70 | 6.8 | 10.210 h |
| February | 14.7°C5.0°C | 5.0°C | 74 | 7.6 | 11.011 h |
| March | 18.8°C8.9°C | 8.9°C | 105 | 9.4 | 12.012 h |
| April | 23.1°C13.1°C | 13.1°C | 118 | 9.1 | 13.013 h |
| May | 27.1°C18.1°C | 18.1°C | 144 | 11.5 | 13.914 h |
| June | 31.2°C22.4°C | 22.4°C | 91 | 9.1 | 14.314 h |
| July | 33.8°C24.8°C | 24.8°C | 50 | 6.2 | 14.114 h |
| August | 33.9°C24.8°C | 24.8°C | 50 | 5.8 | 13.413 h |
| September | 30.0°C20.9°C | 20.9°C | 78 | 6.8 | 12.412 h |
| October, selected | 24.4°C14.9°C | 14.9°C | 104 | 7.9 | 11.411 h |
| November | 17.9°C8.9°C | 8.9°C | 94 | 7.2 | 10.510 h |
| December | 13.1°C4.3°C | 4.3°C | 94 | 7.2 | 10.010 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
- Allen in OctoberUnited States · 12 kmHigh 24.5°C · Low 15.1°C · 99 mm rain
- Frisco in OctoberUnited States · 20 kmHigh 24.4°C · Low 14.9°C · 100 mm rain
- Plano in OctoberUnited States · 21 kmHigh 24.6°C · Low 15.1°C · 99 mm rain
- Richardson in OctoberUnited States · 30 kmHigh 24.7°C · Low 15.2°C · 99 mm rain
- Garland in OctoberUnited States · 32 kmHigh 24.8°C · Low 15.2°C · 99 mm rain
- Carrollton in OctoberUnited States · 37 kmHigh 24.9°C · Low 15.5°C · 96 mm rain
- Lewisville in OctoberUnited States · 39 kmHigh 24.9°C · Low 15.5°C · 96 mm rain
- Mesquite in OctoberUnited States · 48 kmHigh 25.0°C · Low 15.3°C · 101 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 McKinney) is explained once on the McKinney year overview and on the Sources, method and limits page.