Longtown Weather in September
Average highs run from 92°F on September 1 to 83°F on September 30, and lows from 65°F to 55°F. Normal precipitation for the month is 4.39 in over about 7 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
- 88°F
- Average low
- 60°F
- Precipitation
- 4.39 in
- Record high
- 112°FSep 2, 2000
- Record low
- 33°FSep 27, 1942
- Chance of a freeze
- 0%
- Days of 90°F or more
- 10.7
- Daylight
- 12 h 54 min to 11 h 51 min
- Cloud cover
- 45%
- Humidity
- 66%
- Dew point
- 61°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.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Sep 1 | 92°F | 65°F | 109°F 2000 | 48°F 1967 | 22% | 0% |
| Sep 2 | 92°F | 65°F | 112°F 2000 | 48°F 1967 | 22% | 0% |
| Sep 3 | 92°F | 65°F | 110°F 2000 | 46°F 1952 | 22% | 0% |
| Sep 4 | 92°F | 64°F | 112°F 2000 | 49°F 1974 | 23% | 0% |
| Sep 5 | 91°F | 64°F | 112°F 1998 | 50°F 1953 | 23% | 0% |
| Sep 6 | 91°F | 64°F | 109°F 1947 | 49°F 1974 | 23% | 0% |
| Sep 7 | 91°F | 64°F | 109°F 1947 | 49°F 1918 | 23% | 0% |
| Sep 8 | 90°F | 63°F | 106°F 1912 | 48°F 1956 | 23% | 0% |
| Sep 9 | 90°F | 63°F | 104°F 1912 | 46°F 1956 | 23% | 0% |
| Sep 10 | 90°F | 63°F | 104°F 1901 | 46°F 1968 | 24% | 0% |
| Sep 11 | 89°F | 62°F | 105°F 1909 | 44°F 1968 | 24% | 0% |
| Sep 12 | 89°F | 62°F | 104°F 2000 | 44°F 1922 | 24% | 0% |
| Sep 13 | 89°F | 62°F | 101°F 1901 | 45°F 1960 | 24% | 0% |
| Sep 14 | 88°F | 61°F | 100°F 1956 | 46°F 2006 | 25% | 0% |
| Sep 15 | 88°F | 61°F | 102°F 1956 | 38°F 1904 | 25% | 0% |
| Sep 16 | 88°F | 61°F | 102°F 1956 | 42°F 1979 | 25% | 0% |
| Sep 17 | 87°F | 60°F | 104°F 1956 | 37°F 1903 | 25% | 0% |
| Sep 18 | 87°F | 60°F | 100°F 1911 | 39°F 1981 | 25% | 0% |
| Sep 19 | 87°F | 59°F | 99°F 2005 | 39°F 1981 | 25% | 0% |
| Sep 20 | 86°F | 59°F | 102°F 1954 | 36°F 1938 | 25% | 0% |
| Sep 21 | 86°F | 59°F | 101°F 1954 | 38°F 1901 | 25% | 0% |
| Sep 22 | 85°F | 58°F | 103°F 2005 | 40°F 1995 | 25% | 0% |
| Sep 23 | 85°F | 58°F | 102°F 2005 | 37°F 1995 | 25% | 0% |
| Sep 24 | 85°F | 57°F | 100°F 2000 | 35°F 1989 | 25% | 0% |
| Sep 25 | 84°F | 57°F | 98°F 1938 | 35°F 1989 | 25% | 0% |
| Sep 26 | 84°F | 56°F | 98°F 1912 | 36°F 1912 | 25% | 0% |
| Sep 27 | 84°F | 56°F | 99°F 1954 | 33°F 1942 | 25% | 0% |
| Sep 28 | 83°F | 56°F | 98°F 1998 | 34°F 1909 | 25% | 0% |
| Sep 29 | 83°F | 55°F | 105°F 1953 | 36°F 1909 | 25% | 0% |
| Sep 30 | 83°F | 55°F | 101°F 1953 | 33°F 1984 | 25% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- September 1
- sunrise 6:55 AM, sunset 7:49 PM
- September 30
- sunrise 7:16 AM, sunset 7:07 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00349445 (Webbers Falls 5 Wsw), public domain. Records: NOAA GHCN-Daily, station USC00349445, 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.