Grayson County climate

Grayson County Weather in September

NOAA 1991-2020 normals for Leitchfield 2 N, 7.4 km from Grayson County

Average highs run from 84°F on September 1 to 75°F on September 30, and lows from 60°F to 48°F. Normal precipitation for the month is 3.27 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 Grayson County, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
80°F
Average low
54°F
Precipitation
3.27 in
Record high
98°FSep 3, 2011
Record low
39°FSep 28, 2022
Chance of a freeze
6%
Days of 90°F or more
2.8
Daylight
12 h 58 min to 11 h 50 min
Cloud cover
48%
Humidity
68%
Dew point
57°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 184°F60°F92°F 201151°F 200924%0%
Sep 284°F59°F94°F 201153°F 201724%0%
Sep 384°F59°F98°F 201152°F 201724%0%
Sep 483°F59°F98°F 201153°F 201024%0%
Sep 583°F59°F95°F 202646°F 201024%0%
Sep 683°F58°F91°F 201550°F 201724%0%
Sep 783°F58°F90°F 201047°F 201724%0%
Sep 883°F58°F93°F 201046°F 202425%0%
Sep 982°F57°F88°F 202645°F 202425%0%
Sep 1082°F57°F93°F 202648°F 202425%0%
Sep 1182°F56°F93°F 201951°F 201725%0%
Sep 1281°F56°F91°F 201955°F 201625%0%
Sep 1381°F56°F91°F 201949°F 201525%0%
Sep 1481°F55°F92°F 201947°F 201325%0%
Sep 1581°F55°F89°F 201047°F 201325%0%
Sep 1680°F54°F92°F 201046°F 201125%0%
Sep 1780°F54°F92°F 201947°F 201425%0%
Sep 1880°F53°F91°F 202648°F 201425%0%
Sep 1979°F53°F89°F 201046°F 202025%0%
Sep 2079°F53°F89°F 201847°F 202025%0%
Sep 2178°F52°F90°F 201048°F 202025%0%
Sep 2278°F52°F95°F 201048°F 202025%0%
Sep 2378°F51°F93°F 201043°F 201425%0%
Sep 2477°F51°F94°F 201046°F 202125%0%
Sep 2577°F50°F92°F 201050°F 201425%0%
Sep 2677°F50°F86°F 201647°F 202125%0%
Sep 2776°F49°F85°F 201743°F 202224%0%
Sep 2876°F49°F89°F 201939°F 202224%0%
Sep 2975°F48°F89°F 201943°F 202224%0%
Sep 3075°F48°F91°F 201945°F 202224%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Grayson County, 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 6:16 AM, sunset 7:14 PM
September 30
sunrise 6:40 AM, sunset 6:30 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00154703 (Leitchfield 2 N), public domain. Records: NOAA GHCN-Daily, station USC00155280, 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.