Polk County Weather in September
Average highs run from 91°F on September 1 to 89°F on September 30, and lows from 75°F to 72°F. Normal precipitation for the month is 7.26 in over about 14 wet days.
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
- 90°F
- Average low
- 74°F
- Precipitation
- 7.26 in
- Record high
- 98°FSep 1, 1914
- Record low
- 55°FSep 24, 1916
- Chance of a freeze
- 0%
- Days of 90°F or more
- 18.8
- Daylight
- 12 h 42 min to 11 h 55 min
- Cloud cover
- 57%
- Humidity
- 85%
- Dew point
- 74°F
- Wind
- 6.9 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Sep 1 | 91°F | 75°F | 98°F 1914 | 65°F 1975 | 49% |
| Sep 2 | 91°F | 74°F | 97°F 1907 | 66°F 1921 | 48% |
| Sep 3 | 91°F | 74°F | 97°F 1921 | 66°F 1934 | 48% |
| Sep 4 | 91°F | 74°F | 98°F 1931 | 65°F 1975 | 48% |
| Sep 5 | 91°F | 74°F | 97°F 1917 | 62°F 1909 | 48% |
| Sep 6 | 91°F | 74°F | 98°F 1925 | 65°F 1924 | 48% |
| Sep 7 | 91°F | 74°F | 98°F 1925 | 65°F 1909 | 48% |
| Sep 8 | 91°F | 74°F | 97°F 1932 | 66°F 1918 | 48% |
| Sep 9 | 91°F | 74°F | 98°F 1925 | 63°F 1972 | 48% |
| Sep 10 | 91°F | 74°F | 97°F 1923 | 63°F 2004 | 47% |
| Sep 11 | 91°F | 74°F | 97°F 1951 | 62°F 1914 | 47% |
| Sep 12 | 91°F | 74°F | 97°F 1939 | 63°F 1914 | 47% |
| Sep 13 | 90°F | 74°F | 97°F 1925 | 64°F 1917 | 47% |
| Sep 14 | 90°F | 74°F | 96°F 1911 | 64°F 1918 | 47% |
| Sep 15 | 90°F | 74°F | 97°F 1927 | 62°F 1956 | 46% |
| Sep 16 | 90°F | 74°F | 96°F 1933 | 60°F 1913 | 46% |
| Sep 17 | 90°F | 74°F | 97°F 1933 | 64°F 1932 | 46% |
| Sep 18 | 90°F | 73°F | 97°F 1933 | 62°F 1910 | 45% |
| Sep 19 | 90°F | 73°F | 95°F 1925 | 56°F 1981 | 45% |
| Sep 20 | 90°F | 73°F | 95°F 1933 | 56°F 1981 | 45% |
| Sep 21 | 90°F | 73°F | 95°F 1933 | 56°F 1938 | 45% |
| Sep 22 | 90°F | 73°F | 96°F 1911 | 60°F 1972 | 44% |
| Sep 23 | 90°F | 73°F | 96°F 1925 | 57°F 1913 | 44% |
| Sep 24 | 89°F | 73°F | 96°F 1925 | 55°F 1916 | 43% |
| Sep 25 | 89°F | 73°F | 96°F 1951 | 61°F 1916 | 43% |
| Sep 26 | 89°F | 73°F | 96°F 1925 | 62°F 1918 | 42% |
| Sep 27 | 89°F | 73°F | 97°F 1910 | 59°F 1956 | 42% |
| Sep 28 | 89°F | 72°F | 95°F 1902 | 59°F 1931 | 41% |
| Sep 29 | 89°F | 72°F | 98°F 2011 | 59°F 1931 | 41% |
| Sep 30 | 89°F | 72°F | 97°F 1910 | 55°F 1940 | 40% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EDT).
- September 1
- sunrise 7:06 AM, sunset 7:48 PM
- September 30
- sunrise 7:19 AM, sunset 7:14 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00089707 (Winter Haven), public domain. Records: NOAA GHCN-Daily, station USC00080478, 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.