Climate averages 1991–2020
Richmond weather
in August.
A hot, wet month: the 2nd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Richmond: daytime highs average 29.9°C and nights cool to about 20.6°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 109 mm of rain on roughly 11 days, which makes August a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 37 min on an average August day.
The nearest other city in this atlas is Newport News (111 km away). In August its highs average 29.4°C, 0.6°C cooler than Richmond, with 111 mm of rain.
Among the 498 cities listed in the United States, Richmond ranks joint 247th of 498 for the warmest August highs and joint 434th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Richmond is level with that mean.
From August to September, average highs fall by 3.7°C to 26.3°C, and monthly rainfall rises from 109 mm to 112 mm.
The annual picture
August 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
Richmond climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.9°C-0.8°C | -0.8°C | 85 | 9.2 | 9.910 h |
| February | 9.8°C-0.2°C | -0.2°C | 75 | 8.3 | 10.811 h |
| March | 14.1°C3.5°C | 3.5°C | 101 | 10.1 | 11.912 h |
| April | 19.9°C8.9°C | 8.9°C | 82 | 9.5 | 13.113 h |
| May | 24.4°C14.1°C | 14.1°C | 82 | 11.0 | 14.214 h |
| June | 28.8°C18.9°C | 18.9°C | 97 | 11.2 | 14.715 h |
| July | 31.1°C21.6°C | 21.6°C | 106 | 13.0 | 14.514 h |
| August, selected | 29.9°C20.6°C | 20.6°C | 109 | 10.8 | 13.614 h |
| September | 26.3°C17.3°C | 17.3°C | 112 | 9.3 | 12.512 h |
| October | 20.5°C11.1°C | 11.1°C | 93 | 7.6 | 11.311 h |
| November | 14.4°C5.2°C | 5.2°C | 82 | 7.8 | 10.210 h |
| December | 9.7°C1.1°C | 1.1°C | 89 | 8.8 | 9.610 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
August in nearby cities
- Newport News in AugustUnited States · 111 kmHigh 29.4°C · Low 21.7°C · 111 mm rain
- East Hampton in AugustUnited States · 115 kmHigh 29.0°C · Low 22.2°C · 100 mm rain
- Suffolk in AugustUnited States · 120 kmHigh 29.7°C · Low 21.5°C · 120 mm rain
- Portsmouth Heights in AugustUnited States · 126 kmHigh 29.5°C · Low 21.6°C · 119 mm rain
- Norfolk in AugustUnited States · 130 kmHigh 29.2°C · Low 21.7°C · 119 mm rain
- Centreville in AugustUnited States · 143 kmHigh 29.3°C · Low 20.4°C · 84 mm rain
- Alexandria, United States in AugustUnited States · 144 kmHigh 29.5°C · Low 20.7°C · 89 mm rain
- Lynchburg in AugustUnited States · 149 kmHigh 29.8°C · Low 20.0°C · 74 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 Richmond) is explained once on the Richmond year overview and on the Sources, method and limits page.