Richmond, VA weather in September
September in Richmond: warm and often humid, with some rain. Highs 81°F, lows 61°F, about 9 wet days.
- Normal high
- 81°F
- Normal low
- 61°F
- Wet days
- 9
- 4.6 in total
- Muggy days
- 11
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 85°F | 76°F |
| Normal low | 65°F | 56°F |
| Chance of a wet day | 30% | 28% |
| Sunrise / sunset | 6:40 am / 7:39 pm | 7:04 am / 6:55 pm |
| Daylight | 13.0 h | 11.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical September day
- 6 am64°Fdew point 60°F
- 9 am72°Fdew point 62°F
- Noon78°Fdew point 61°F
- 3 pm80°Fdew point 60°F
- 6 pm75°Fdew point 61°F
- 9 pm69°Fdew point 62°F
NOAA hourly normals (local standard time) from Richmond Intl Airport (8 mi away); average wind 7 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F8 of 30
- Hot dayshigh 90°F or more4 of 30
- Muggy daysdaily mean dew point 65°F or more11 of 30
- Wet daysat least 0.01 in of rain or melted snow9 of 30
- Notable rainat least 0.10 in6 of 30
- Freezing nightslow 32°F or below0 of 30
- Snow on the groundsnow depth 1 in or more0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 4.6 in; a dry September brings about 2.2 in and a wet one about 6.4 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more.
How September varies from year to year
- Warmest September, 1991-20202019: average high 88°F
- Coolest September2000: average high 77°F
- Wettest September1999: 16.6 in
- Driest September2005: 0.08 in
- Highest reading101°F (September 2, 2014)
- Lowest reading42°F (September 30, 1993)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 88°F | 81°F | 71°F |
| Normal low | 68°F | 61°F | 49°F |
| Wet days | 9 | 9 | 8 |
| Comfortable days | 1 | 8 | 17 |
| Daylight | 13.6 h | 12.4 h | 11.2 h |
Highs change by -7°F from August and -10°F into October.
Nearby alternatives in September
- Cooler: Frederick, MD129 mi · high 76°F · 9 wet days
How Richmond ranks in September
- Normal high184th warmest of 378 cities; 2nd of 5 in Virginia
- Wet days275th driest of 378
- Comfortable days181st most of 342
What to pack for Richmond in September
- A rain jacket or umbrella – rain on about 9 days
Heating and cooling
September has 22 heating degree days and 206 cooling degree days (base 65°F), 4% of the year's total heating and cooling demand.
Questions
How hot is Richmond in September?
The normal high is 81°F and the normal low is 61°F. From 1991 to 2020 the hottest September reading was 101°F (September 2, 2014).
Does it rain a lot in Richmond in September?
About 9 days in September have at least 0.01 in of precipitation, and the normal total is 4.6 in. The wettest September in 1991-2020 was in 1999 (16.6 in); the driest was in 2005 (0.08 in).
Is September a good time to visit Richmond?
September ranks 5th of 12 months on our comfort score for Richmond (56 out of 100). It has about 8 comfortable days and about 4 days at 90°F or hotter. The best months are April, May and October.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates and humidity and wind by hour: Richmond Intl Airport (USW00013740), 8.4 mi ESE of the city center, 164 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Richmond International Airport (724010-13740), 8.1 mi ESE of the city center, 166 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).