Climate averages 1991–2020
McKinney weather
in June.
A hot, wet month: the 3rd warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a hot month in McKinney: daytime highs average 31.2°C and nights cool to about 22.4°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 91 mm of rain on roughly 9 days, which makes June a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 18 min on an average June day.
The nearest other city in this atlas is Allen (12 km away). In June its highs average 31.3°C, about as warm as McKinney, with 86 mm of rain.
Among the 498 cities listed in the United States, McKinney ranks joint 95th of 498 for the warmest June highs and joint 261st of 498 for the driest June (rainfall, lowest first). The mean June high of those 498 cities is 27.9°C; McKinney is 3.3°C warmer than that mean.
From June to July, average highs rise by 2.6°C to 33.8°C, and monthly rainfall falls from 91 mm to 50 mm.
The annual picture
June 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, selected | 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 | 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
June in nearby cities
- Allen in JuneUnited States · 12 kmHigh 31.3°C · Low 22.6°C · 86 mm rain
- Frisco in JuneUnited States · 20 kmHigh 31.3°C · Low 22.4°C · 88 mm rain
- Plano in JuneUnited States · 21 kmHigh 31.3°C · Low 22.6°C · 86 mm rain
- Richardson in JuneUnited States · 30 kmHigh 31.4°C · Low 22.6°C · 86 mm rain
- Garland in JuneUnited States · 32 kmHigh 31.5°C · Low 22.6°C · 86 mm rain
- Carrollton in JuneUnited States · 37 kmHigh 31.7°C · Low 23.0°C · 82 mm rain
- Lewisville in JuneUnited States · 39 kmHigh 31.8°C · Low 23.0°C · 82 mm rain
- Mesquite in JuneUnited States · 48 kmHigh 31.7°C · Low 22.7°C · 84 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.