Dover climate

Dover Weather in September

NOAA 1991-2020 normals for Dover 1 W, 2.3 km from Dover

Average highs run from 86°F on September 1 to 77°F on September 30, and lows from 65°F to 54°F. Normal precipitation for the month is 3.56 in over about 7 wet days.

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.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
82°F
Average low
60°F
Precipitation
3.56 in
Record high
101°FSep 4, 2026
Record low
35°FSep 26, 2001
Chance of a freeze
0%
Days of 90°F or more
4.3
Daylight
12 h 56 min to 11 h 50 min
Cloud cover
47%
Humidity
67%
Dew point
59°F
Wind
5.4 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 186°F65°F98°F 201152°F 200922%0%
Sep 286°F65°F99°F 201153°F 201722%0%
Sep 386°F65°F100°F 202652°F 201722%0%
Sep 486°F64°F101°F 202652°F 201022%0%
Sep 585°F64°F100°F 202645°F 201022%0%
Sep 685°F64°F97°F 202650°F 201722%0%
Sep 785°F63°F95°F 200246°F 201722%0%
Sep 885°F63°F96°F 202648°F 201722%0%
Sep 984°F63°F97°F 202646°F 202422%0%
Sep 1084°F62°F97°F 200250°F 202422%0%
Sep 1184°F62°F95°F 201951°F 200122%0%
Sep 1283°F62°F95°F 201952°F 201522%0%
Sep 1383°F61°F98°F 202648°F 201522%0%
Sep 1483°F61°F94°F 202547°F 201522%0%
Sep 1582°F60°F100°F 202649°F 200722%0%
Sep 1682°F60°F98°F 202647°F 200722%0%
Sep 1782°F60°F100°F 202647°F 201422%0%
Sep 1881°F59°F94°F 201948°F 201222%0%
Sep 1981°F59°F95°F 201043°F 201223%0%
Sep 2081°F58°F99°F 202244°F 200623%0%
Sep 2180°F58°F98°F 201044°F 200623%0%
Sep 2280°F57°F96°F 201047°F 201523%0%
Sep 2379°F57°F95°F 201041°F 201223%0%
Sep 2479°F57°F93°F 201039°F 201223%0%
Sep 2579°F56°F93°F 200740°F 200123%0%
Sep 2678°F56°F90°F 201735°F 200122%0%
Sep 2778°F55°F94°F 201940°F 200122%0%
Sep 2878°F55°F91°F 201944°F 202222%0%
Sep 2977°F54°F95°F 201940°F 200322%0%
Sep 3077°F54°F95°F 201939°F 200322%0%

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.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (CDT).

September 1
sunrise 6:23 AM, sunset 7:19 PM
September 30
sunrise 6:46 AM, sunset 6:36 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00402589 (Dover 1 W), public domain. Records: NOAA GHCN-Daily, station USW00003894, 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.