Click on a day for an hourly weather forecast
The weather in Ashburn in August is hot. The average temperatures are between 20°C and 30°C.
You can expect rain for roughly half of the month of August in Ashburn. 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 Ashburn in August 2025.
If you’re planning to visit Ashburn in the near future, we highly recommend that you review the 14 day weather forecast for Ashburn before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / -1° | 8 | 16 | 8 | 144 mm | Awful | Ashburn in January |
| February | 8° / 1° | 8 | 13 | 8 | 204 mm | Awful | Ashburn in February |
| March | 14° / 5° | 9 | 19 | 3 | 172 mm | Bad | Ashburn in March |
| April | 19° / 10° | 9 | 21 | 1 | 190 mm | Ok | Ashburn in April |
| May | 25° / 15° | 10 | 21 | 0 | 204 mm | Good | Ashburn in May |
| June | 29° / 19° | 10 | 20 | 0 | 225 mm | Ok | Ashburn in June |
| July | 30° / 21° | 12 | 19 | 0 | 262 mm | Ok | Ashburn in July |
| August | 30° / 20° | 10 | 21 | 0 | 227 mm | Ok | Ashburn in August |
| September | 27° / 17° | 7 | 23 | 0 | 161 mm | Good | Ashburn in September |
| October | 20° / 11° | 6 | 25 | 0 | 147 mm | Good | Ashburn in October |
| November | 13° / 5° | 6 | 23 | 1 | 118 mm | Ok | Ashburn in November |
| December | 9° / 2° | 8 | 19 | 4 | 172 mm | Awful | Ashburn in December |