Dover climate

Dover Weather in September

NOAA 1991-2020 normals for Rowe 3NE, 23.8 km from Dover

Average highs run from 73°F on September 1 to 63°F on September 30, and lows from 52°F to 42°F. Normal precipitation for the month is 4.60 in.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Dover, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
68°F
Average low
48°F
Precipitation
4.60 in
Record high
92°FSep 11, 2013
Record low
24°FSep 29, 2000
Chance of a freeze
33%
Daylight
13 h 10 min to 11 h 47 min
Cloud cover
58%
Humidity
80%
Dew point
52°F
Wind
3.8 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Sep 173°F52°F91°F 201038°F 20170%
Sep 272°F52°F91°F 201033°F 20170%
Sep 372°F52°F91°F 201840°F 20240%
Sep 472°F51°F87°F 199943°F 20240%
Sep 572°F51°F91°F 201837°F 20000%
Sep 672°F51°F88°F 201834°F 20000%
Sep 771°F50°F90°F 200739°F 20000%
Sep 871°F50°F91°F 201538°F 20250%
Sep 971°F50°F89°F 201536°F 20130%
Sep 1070°F50°F87°F 200240°F 20090%
Sep 1170°F49°F92°F 201335°F 20050%
Sep 1270°F49°F84°F 200535°F 20060%
Sep 1369°F49°F87°F 200539°F 20140%
Sep 1469°F48°F86°F 200537°F 20140%
Sep 1569°F48°F83°F 202132°F 20010%
Sep 1668°F48°F86°F 201835°F 20010%
Sep 1768°F47°F83°F 201732°F 20130%
Sep 1868°F47°F84°F 201735°F 20130%
Sep 1967°F47°F82°F 202433°F 20190%
Sep 2067°F46°F80°F 200231°F 20200%
Sep 2167°F46°F80°F 200028°F 20200%
Sep 2266°F45°F84°F 201929°F 20200%
Sep 2366°F45°F84°F 201734°F 20140%
Sep 2465°F45°F89°F 201033°F 20120%
Sep 2565°F44°F90°F 201732°F 20160%
Sep 2665°F44°F87°F 201731°F 20160%
Sep 2764°F43°F88°F 201731°F 20000%
Sep 2864°F43°F82°F 202528°F 20000%
Sep 2963°F43°F78°F 201524°F 20000%
Sep 3063°F42°F76°F 201030°F 20000%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Dover, in percent, and of at least 0.1 inch of snowfall.00.21102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

September 1
sunrise 6:16 AM, sunset 7:26 PM
September 30
sunrise 6:47 AM, sunset 6:34 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00196989 (Rowe 3NE), public domain. Records: NOAA GHCN-Daily, station USW00054781, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.