Click on a day for an hourly weather forecast
The weather in Mckinney in August is hot. The average temperatures are between 22°C and 34°C.
You can expect rain for roughly half of the month of August in Mckinney. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Mckinney in August 2025.
If you’re planning to visit Mckinney in the near future, we highly recommend that you review the 14 day weather forecast for Mckinney before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 11° / 2° | 5 | 24 | 1 | 100 mm | Ok | Mckinney in January |
| February | 12° / 4° | 6 | 21 | 2 | 119 mm | Bad | Mckinney in February |
| March | 18° / 8° | 7 | 24 | 1 | 146 mm | Ok | Mckinney in March |
| April | 23° / 12° | 6 | 24 | 0 | 139 mm | Perfect | Mckinney in April |
| May | 28° / 17° | 8 | 23 | 0 | 152 mm | Good | Mckinney in May |
| June | 32° / 21° | 6 | 24 | 0 | 114 mm | Good | Mckinney in June |
| July | 34° / 23° | 9 | 22 | 0 | 150 mm | Bad | Mckinney in July |
| August | 34° / 22° | 8 | 23 | 0 | 145 mm | Bad | Mckinney in August |
| September | 30° / 19° | 5 | 25 | 0 | 101 mm | Good | Mckinney in September |
| October | 24° / 13° | 4 | 27 | 0 | 116 mm | Perfect | Mckinney in October |
| November | 17° / 8° | 4 | 26 | 0 | 76 mm | Good | Mckinney in November |
| December | 13° / 5° | 6 | 24 | 1 | 118 mm | Ok | Mckinney in December |