Keysville climate

Keysville Weather in September

NOAA 1991-2020 normals for Keysville 2 S, 2.5 km from Keysville

Average highs run from 85°F on September 1 to 77°F on September 30, and lows from 62°F to 54°F. Normal precipitation for the month is 4.30 in over about 8 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 Keysville, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
81°F
Average low
58°F
Precipitation
4.30 in
Record high
101°FSep 12, 1983
Record low
35°FSep 23, 1983
Chance of a freeze
0%
Days of 90°F or more
5.0
Daylight
12 h 57 min to 11 h 50 min
Cloud cover
54%
Humidity
72%
Dew point
59°F
Wind
4.0 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 185°F62°F97°F 197742°F 197624%0%
Sep 284°F62°F98°F 198049°F 198725%0%
Sep 384°F62°F98°F 198044°F 202425%0%
Sep 484°F62°F95°F 197741°F 202424%0%
Sep 584°F62°F97°F 198043°F 199724%0%
Sep 684°F61°F95°F 198342°F 202424%0%
Sep 783°F61°F99°F 198342°F 197624%0%
Sep 883°F61°F100°F 198344°F 198424%0%
Sep 983°F60°F95°F 198542°F 198624%0%
Sep 1083°F60°F94°F 197837°F 201724%0%
Sep 1183°F60°F97°F 198337°F 201724%0%
Sep 1282°F60°F101°F 198337°F 201724%0%
Sep 1382°F59°F98°F 198337°F 201724%0%
Sep 1482°F59°F96°F 201939°F 198524%0%
Sep 1582°F59°F95°F 199140°F 197524%0%
Sep 1681°F59°F91°F 201040°F 198524%0%
Sep 1781°F58°F95°F 199140°F 198524%0%
Sep 1881°F58°F95°F 199141°F 198624%0%
Sep 1981°F58°F96°F 199140°F 198424%0%
Sep 2080°F57°F92°F 197839°F 198424%0%
Sep 2180°F57°F91°F 200544°F 199124%0%
Sep 2280°F57°F92°F 198041°F 197625%0%
Sep 2380°F56°F96°F 198035°F 198325%0%
Sep 2479°F56°F95°F 201035°F 197425%0%
Sep 2579°F56°F93°F 201035°F 198324%0%
Sep 2679°F55°F92°F 198635°F 198324%0%
Sep 2778°F55°F93°F 198640°F 200124%0%
Sep 2878°F54°F92°F 201937°F 198924%0%
Sep 2978°F54°F93°F 201938°F 198924%0%
Sep 3077°F54°F93°F 201939°F 198124%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Keysville, 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 (EDT).

September 1
sunrise 6:45 AM, sunset 7:42 PM
September 30
sunrise 7:09 AM, sunset 6:59 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00444568 (Keysville 2 S), public domain. Records: NOAA GHCN-Daily, station USC00441322, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.