Appleton Weather in September
Average highs run from 74°F on September 1 to 63°F on September 30, and lows from 57°F to 47°F. Normal precipitation for the month is 4.49 in over about 9 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
- 69°F
- Average low
- 52°F
- Precipitation
- 4.49 in
- Record high
- 87°FSep 6, 2018
- Record low
- 34°FSep 29, 2000
- Chance of a freeze
- 2%
- Daylight
- 13 h 13 min to 11 h 45 min
- Cloud cover
- 56%
- Humidity
- 77%
- Dew point
- 52°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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Sep 1 | 74°F | 57°F | 85°F 1995 | 44°F 2002 | 28% | 0% |
| Sep 2 | 74°F | 56°F | 81°F 2010 | 41°F 2017 | 28% | 0% |
| Sep 3 | 73°F | 56°F | 82°F 2018 | 41°F 2017 | 28% | 0% |
| Sep 4 | 73°F | 56°F | 82°F 2018 | 45°F 1989 | 28% | 0% |
| Sep 5 | 73°F | 56°F | 78°F 2018 | 44°F 2000 | 28% | 0% |
| Sep 6 | 73°F | 55°F | 87°F 2018 | 43°F 2000 | 28% | 0% |
| Sep 7 | 72°F | 55°F | 77°F 2018 | 46°F 2013 | 29% | 0% |
| Sep 8 | 72°F | 55°F | 78°F 2015 | 46°F 1990 | 29% | 0% |
| Sep 9 | 72°F | 54°F | 87°F 2016 | 40°F 2018 | 29% | 0% |
| Sep 10 | 71°F | 54°F | 82°F 2016 | 43°F 2018 | 29% | 0% |
| Sep 11 | 71°F | 54°F | 84°F 1989 | 41°F 1995 | 29% | 0% |
| Sep 12 | 71°F | 53°F | 81°F 2005 | 44°F 2006 | 29% | 0% |
| Sep 13 | 70°F | 53°F | 77°F 2017 | 43°F 1992 | 29% | 0% |
| Sep 14 | 70°F | 53°F | 76°F 2017 | 45°F 2004 | 29% | 0% |
| Sep 15 | 69°F | 52°F | 78°F 2015 | 43°F 2014 | 30% | 0% |
| Sep 16 | 69°F | 52°F | 79°F 2015 | 39°F 1995 | 30% | 0% |
| Sep 17 | 69°F | 52°F | 78°F 2018 | 41°F 2013 | 30% | 0% |
| Sep 18 | 68°F | 51°F | 74°F 2018 | 42°F 1990 | 30% | 0% |
| Sep 19 | 68°F | 51°F | 72°F 2018 | 39°F 2014 | 30% | 0% |
| Sep 20 | 67°F | 50°F | 74°F 2017 | 39°F 1993 | 31% | 0% |
| Sep 21 | 67°F | 50°F | 78°F 2016 | 41°F 1993 | 31% | 0% |
| Sep 22 | 67°F | 50°F | 76°F 2016 | 41°F 1991 | 31% | 0% |
| Sep 23 | 66°F | 49°F | 76°F 2017 | 40°F 2018 | 31% | 0% |
| Sep 24 | 66°F | 49°F | 82°F 2017 | 37°F 1992 | 31% | 0% |
| Sep 25 | 65°F | 49°F | 77°F 2017 | 37°F 2018 | 32% | 0% |
| Sep 26 | 65°F | 48°F | 77°F 2017 | 37°F 2009 | 32% | 0% |
| Sep 27 | 65°F | 48°F | 77°F 2014 | 40°F 1989 | 32% | 0% |
| Sep 28 | 64°F | 47°F | 72°F 2017 | 36°F 1989 | 32% | 0% |
| Sep 29 | 64°F | 47°F | 71°F 2014 | 34°F 2000 | 33% | 0% |
| Sep 30 | 63°F | 47°F | 71°F 2014 | 38°F 1995 | 33% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- September 1
- sunrise 6:00 AM, sunset 7:13 PM
- September 30
- sunrise 6:34 AM, sunset 6:19 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00179593 (W Rockport 1 Nnw), public domain. Records: NOAA GHCN-Daily, station USC00176881, 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.