Half Moon climate

Half Moon Weather in September

NOAA 1991-2020 normals for Jacksonville Eoc, 6.2 km from Half Moon

Average highs run from 87°F on September 1 to 80°F on September 30, and lows from 68°F to 59°F. Normal precipitation for the month is 7.85 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 Half Moon, in °F, with the record for each date.406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
84°F
Average low
64°F
Precipitation
7.85 in
Record high
97°FSep 1, 1993
Record low
44°FSep 24, 1981
Chance of a freeze
0%
Days of 90°F or more
6.2
Daylight
12 h 53 min to 11 h 51 min
Cloud cover
54%
Humidity
80%
Dew point
66°F
Wind
7.4 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 187°F68°F97°F 199360°F 20110%
Sep 287°F67°F95°F 198054°F 19670%
Sep 387°F67°F96°F 198054°F 19670%
Sep 487°F67°F95°F 202050°F 19970%
Sep 587°F67°F96°F 198346°F 19970%
Sep 686°F67°F95°F 198351°F 19970%
Sep 786°F66°F97°F 198357°F 19820%
Sep 886°F66°F97°F 198555°F 19650%
Sep 986°F66°F94°F 198554°F 19660%
Sep 1086°F66°F95°F 198353°F 19980%
Sep 1185°F65°F97°F 198354°F 20120%
Sep 1285°F65°F94°F 198354°F 20120%
Sep 1385°F65°F95°F 198155°F 19850%
Sep 1485°F65°F93°F 195649°F 19850%
Sep 1584°F64°F95°F 195653°F 19640%
Sep 1684°F64°F91°F 199352°F 20230%
Sep 1784°F64°F93°F 197851°F 19660%
Sep 1884°F63°F95°F 197851°F 19900%
Sep 1983°F63°F95°F 197851°F 19590%
Sep 2083°F63°F91°F 197752°F 19840%
Sep 2183°F62°F90°F 195746°F 19620%
Sep 2283°F62°F92°F 195550°F 19830%
Sep 2382°F62°F95°F 198047°F 19830%
Sep 2482°F61°F93°F 196144°F 19810%
Sep 2582°F61°F93°F 198646°F 19810%
Sep 2681°F60°F94°F 198650°F 19810%
Sep 2781°F60°F94°F 198648°F 20010%
Sep 2881°F60°F92°F 201750°F 19620%
Sep 2981°F59°F95°F 201950°F 19700%
Sep 3080°F59°F91°F 198646°F 19700%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Half Moon, 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 6:43 AM, sunset 7:36 PM
September 30
sunrise 7:04 AM, sunset 6:55 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00314471 (Jacksonville Eoc), public domain. Records: NOAA GHCN-Daily, station USW00093727, 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.