Chesapeake, VA weather in September
September in Chesapeake: warm and often humid, with some rain. Highs 81°F, lows 67°F, rain on about 9 days.
- Normal high
- 81°F
- Normal low
- 67°F
- Wet days
- 9
- 5.4 in total
- Muggy days
- 16
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 85°F | 78°F |
| Normal low | 70°F | 62°F |
| Chance of a wet day | 31% | 28% |
| Sunrise / sunset | 6:36 am / 7:34 pm | 6:59 am / 6:50 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 am69°Fdew point 64°F
- 9 am75°Fdew point 65°F
- Noon78°Fdew point 64°F
- 3 pm78°Fdew point 64°F
- 6 pm75°Fdew point 64°F
- 9 pm72°Fdew point 64°F
NOAA hourly normals (local standard time) from Norfolk Intl Airport (7 mi away); average wind 9 mph; clear or few clouds in 46% of daytime hours, mostly cloudy or overcast in 37%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F7 of 30
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph11 of 30
- Hot dayshigh 90°F or more2 of 30
- Muggy daysdaily mean dew point 65°F or more16 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 5.4 in; a dry September brings about 2.1 in and a wet one about 7.7 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 2 an inch or more.
How September varies from year to year
- Warmest September, 1991-20202018: average high 85°F
- Coolest September2009: average high 77°F
- Wettest September2016: 13.5 in
- Driest September2007: 0.4 in
- Highest reading99°F (September 2, 2014)
- Lowest reading49°F (September 28, 1991)
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 | 87°F | 81°F | 72°F |
| Normal low | 72°F | 67°F | 55°F |
| Wet days | 10 | 9 | 8 |
| Comfortable days | 1 | 7 | 15 |
| Daylight | 13.5 h | 12.4 h | 11.2 h |
Highs change by -6°F from August and -9°F into October.
Nearby alternatives in September
- Cooler: Frederick, MD190 mi · high 76°F · 9 wet days
How Chesapeake ranks in September
- Normal high183rd warmest of 378 cities; 1st of 5 in Virginia
- Wet days280th driest of 378
- Comfortable days188th most of 342
What to pack for Chesapeake in September
- A rain jacket or umbrella – rain on about 9 days
- A swimsuit – about 11 beach days
Heating and cooling
September has 5 heating degree days and 275 cooling degree days (base 65°F), 6% of the year's total heating and cooling demand.
Questions
How hot is Chesapeake in September?
The normal high is 81°F and the normal low is 67°F. From 1991 to 2020 the hottest September reading was 99°F (September 2, 2014).
Does it rain a lot in Chesapeake in September?
About 9 days in September have at least 0.01 in of precipitation, and the normal total is 5.4 in. The wettest September in 1991-2020 was in 2016 (13.5 in); the driest was in 2007 (0.4 in).
Is September a good time to visit Chesapeake?
September ranks 5th of 12 months on our comfort score for Chesapeake (56 out of 100). It has about 7 comfortable days and about 2 days at 90°F or hotter. The best months are April, May and October.
Where the numbers come from
- Temperature, rain, snowfall, frost dates, humidity and wind by hour and cloud cover: Norfolk Intl Airport (USW00013737), 7.4 mi NE of the city center, 30 ft . NOAA normals and daily records, 1991-2020.
- Snow depth: Suffolk Lake Kilby (USC00448192), 19 mi WSW of the city center, 22 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Norfolk International Airport (723080-13737), 7.4 mi NE of the city center, 11 ft . Hourly observations, 1991-2020.