Grant County Weather in September
Average highs run from 85°F on September 1 to 75°F on September 30, and lows from 59°F to 48°F. Normal precipitation for the month is 3.34 in.
September day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
September at a glance
- Average high
- 81°F
- Average low
- 54°F
- Precipitation
- 3.34 in
- Record high
- 101°FSep 8, 2015
- Record low
- 33°FSep 22, 2020
- Chance of a freeze
- 0%
- Days of 90°F or more
- 3.9
- Daylight
- 13 h 01 min to 11 h 49 min
- Cloud cover
- 57%
- Humidity
- 70%
- Dew point
- 53°F
- Wind
- 3.6 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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Sep 1 | 85°F | 59°F | 96°F 2010 | 40°F 2025 | 0% | |
| Sep 2 | 85°F | 59°F | 95°F 2010 | 40°F 1995 | 0% | |
| Sep 3 | 85°F | 58°F | 98°F 2015 | 41°F 2009 | 0% | |
| Sep 4 | 84°F | 58°F | 96°F 2010 | 41°F 1997 | 0% | |
| Sep 5 | 84°F | 58°F | 94°F 2023 | 39°F 1997 | 0% | |
| Sep 6 | 84°F | 58°F | 92°F 2011 | 40°F 1997 | 0% | |
| Sep 7 | 84°F | 57°F | 95°F 1998 | 44°F 2000 | 0% | |
| Sep 8 | 83°F | 57°F | 101°F 2015 | 37°F 2025 | ||
| Sep 9 | 83°F | 57°F | 96°F 2016 | 35°F 2025 | ||
| Sep 10 | 83°F | 56°F | 97°F 2016 | 38°F 2025 | ||
| Sep 11 | 83°F | 56°F | 97°F 2016 | 40°F 2010 | ||
| Sep 12 | 82°F | 56°F | 93°F 2002 | 40°F 2010 | ||
| Sep 13 | 82°F | 55°F | 90°F 1998 | 40°F 2010 | ||
| Sep 14 | 82°F | 55°F | 92°F 1998 | 41°F 2002 | ||
| Sep 15 | 81°F | 54°F | 98°F 2008 | 41°F 2001 | ||
| Sep 16 | 81°F | 54°F | 94°F 1998 | 38°F 2007 | ||
| Sep 17 | 80°F | 54°F | 93°F 2026 | 37°F 2000 | ||
| Sep 18 | 80°F | 53°F | 89°F 2026 | 42°F 1999 | ||
| Sep 19 | 80°F | 53°F | 88°F 2025 | 40°F 2020 | ||
| Sep 20 | 79°F | 52°F | 90°F 2010 | 35°F 2020 | ||
| Sep 21 | 79°F | 52°F | 89°F 1998 | 34°F 2020 | ||
| Sep 22 | 78°F | 52°F | 89°F 2002 | 33°F 2020 | ||
| Sep 23 | 78°F | 51°F | 94°F 2010 | 34°F 2020 | ||
| Sep 24 | 78°F | 51°F | 91°F 2016 | 39°F 1998 | ||
| Sep 25 | 77°F | 50°F | 88°F 2009 | 39°F 1998 | ||
| Sep 26 | 77°F | 50°F | 91°F 2007 | 35°F 2012 | ||
| Sep 27 | 76°F | 50°F | 89°F 2007 | 39°F 2012 | ||
| Sep 28 | 76°F | 49°F | 87°F 1998 | 37°F 2022 | ||
| Sep 29 | 75°F | 49°F | 85°F 2020 | 40°F 2000 | ||
| Sep 30 | 75°F | 48°F | 83°F 1998 | 35°F 2005 |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- September 1
- sunrise 6:46 AM, sunset 7:47 PM
- September 30
- sunrise 7:12 AM, sunset 7:01 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00466952 (Petersburg), public domain. Records: NOAA GHCN-Daily, station USC00466952, 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.