Whitefish weather in September: Whitefish, Montana: normal highs, lows, rain and records for September
Whitefish in September has a normal high of 69°F and a normal low of 40°F, a daily mean of 54°F, falling from 75°F on the 1st to 62°F by the 30th. Measurable precipitation falls on 8 days in a normal September, 1.25 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 20°C and low of 5°C, 32 mm of precipitation in September.
- NOAA stationWhitefish
- Station IDUSC00248902
- Location48.41°N 114.36°W
- Elevation3,100 ft (945 m)
- Population9,256
- Jan 29° 16°
- Feb 34° 16°
- Mar 43° 23°
- Apr 53° 30°
- May 64° 39°
- Jun 70° 45°
- Jul 81° 50°
- Aug 80° 48°
- Sep 69° 40°
- Oct 53° 31°
- Nov 38° 24°
- Dec 29° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Whitefish in September?
The normal high is 69°F and the normal low 40°F, for a daily mean of 54.4°F. September is 9.7°F cooler than August and 12.7°F warmer than October. September is the 4th warmest month of the year in Whitefish and the 11th wettest. Across the month the normal high falls 13°F, from 75°F on September 1 to 62°F on September 30. From one year to the next September's mean temperature typically moves about 2.4°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 52°F and 57°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 26%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 75°F | 44°F | 24% | 12% |
| September 8 | 72°F | 42°F | 24% | 13% |
| September 15 | 69°F | 40°F | 25% | 14% |
| September 22 | 66°F | 38°F | 25% | 14% |
| September 30 | 62°F | 36°F | 26% | 14% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 75°F | 44°F | 24% | 12% | 13 h 30 min |
| September 2 | 74°F | 44°F | 24% | 13% | 13 h 30 min |
| September 3 | 74°F | 44°F | 24% | 13% | 13 h 20 min |
| September 4 | 74°F | 43°F | 24% | 13% | 13 h 20 min |
| September 5 | 73°F | 43°F | 24% | 13% | 13 h 10 min |
| September 6 | 73°F | 43°F | 24% | 13% | 13 h 10 min |
| September 7 | 72°F | 43°F | 24% | 13% | 13 h 10 min |
| September 8 | 72°F | 42°F | 24% | 13% | 13 h |
| September 9 | 72°F | 42°F | 24% | 14% | 13 h |
| September 10 | 71°F | 42°F | 24% | 14% | 13 h |
| September 11 | 71°F | 42°F | 24% | 14% | 12 h 50 min |
| September 12 | 70°F | 41°F | 24% | 14% | 12 h 50 min |
| September 13 | 70°F | 41°F | 25% | 14% | 12 h 50 min |
| September 14 | 70°F | 41°F | 25% | 14% | 12 h 40 min |
| September 15 | 69°F | 40°F | 25% | 14% | 12 h 40 min |
| September 16 | 69°F | 40°F | 25% | 14% | 12 h 40 min |
| September 17 | 68°F | 40°F | 25% | 14% | 12 h 30 min |
| September 18 | 68°F | 40°F | 25% | 15% | 12 h 30 min |
| September 19 | 67°F | 39°F | 25% | 15% | 12 h 30 min |
| September 20 | 67°F | 39°F | 25% | 15% | 12 h 20 min |
| September 21 | 67°F | 39°F | 25% | 15% | 12 h 20 min |
| September 22 | 66°F | 38°F | 25% | 14% | 12 h 20 min |
| September 23 | 66°F | 38°F | 25% | 14% | 12 h 10 min |
| September 24 | 65°F | 38°F | 25% | 14% | 12 h 10 min |
| September 25 | 65°F | 38°F | 25% | 14% | 12 h 10 min |
| September 26 | 64°F | 37°F | 26% | 14% | 12 h |
| September 27 | 64°F | 37°F | 26% | 14% | 12 h |
| September 28 | 63°F | 37°F | 26% | 14% | 11 h 50 min |
| September 29 | 63°F | 36°F | 26% | 14% | 11 h 50 min |
| September 30 | 62°F | 36°F | 26% | 14% | 11 h 50 min |
- Normal high
- 69°FSeptember average
- Normal low
- 40°FSeptember average
- Precipitation
- 1.25 inmonth total
- Days with precipitation
- 80.01 inch or more
- Days at 90°F or more
- 1
- Nights at 32°F or colder
- 3
- Daylight
- 13 h 30 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 17
- Days at 80°F or more
- 6
- Sunshine
- 75%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00248902; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Whitefish in September?
On a given September day the chance of 0.01 inch or more is 25% on average, highest around September 30 (26%). In all, 1.25 in falls on 8 days of a normal September.
In a normal September in Whitefish, 1 days reach 90°F and 3 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00248902.
How does September in Whitefish compare across Montana?
Across the 141 places PlainClimate covers in Montana, September normal highs run from 62°F in Cooke City to 79°F in Hardin; Whitefish's is 69°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.