SeasonMapWhitefish weather in September
United States
September in Whitefish: nice, a little rain, with clean air — not the best time to visit.
#10 of 12 months in Whitefish · #1367 of 1383 destinations to visit in September · comfort 18/100 (tier F)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Whitefish in September
Other months in Whitefish
February is the deep of the season at Whitefish — around −2°C by day, −10°C at night, and the record's heaviest snowfall month at 64cm, which turns the forum's "sometimes the most snow of the season comes in February" into the actual average. The caveat regulars raise is visibility rather than cover: the mountain is fogged in roughly half the time in January and February. Two dates to plan around — the Winter Carnival on the first weekend of February, which people travel in for, and Presidents Day week, which they avoid for crowds. Driving from Spokane means winter roads; flying into Glacier Park International is the easier route.
Add your own note from Whitefish's card on the map.
Whitefish climate normals — September
| Daytime high | 22°C / 71°F | 😎 nice |
|---|---|---|
| Nighttime low | 10°C / 49°F | |
| Rainfall | 47 mm / 1.8 in | 🌦 some rain |
| Rainy days | 8 days | |
| Humidity | 63% | 💧 humid |
| Dew point | 8°C / 46°F | |
| Sunshine | 10 h/day | |
| Daylight | 12.6 h | |
| Wind | 12 km/h / 7 mph | |
| Snowfall | 2.7 cm / 1.1 in | |
| Air quality (US AQI) | 34 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Whitefish in September
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsGoing-to-the-Sun Road season, Summer break in United States(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Whitefish's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherWhitefish's weather peaks December–February.
September coincides with Wildfire smoke.
Best weatherFair weatherToughest weather
What's on in Whitefish in September
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Opening
Going-to-the-Sun Road season
25 Jun – 20 Oct · usuallyTrail seasonCrowdedGlacier's alpine road over Logan Pass is the reason most people drive the hour east, and ploughing usually gets it fully open around the start of July and loses it again in October. Snow decides, not the calendar. Source ↗
- Hazard
Wildfire smoke
1 Aug – 20 Sep · usuallySmoke seasonLate-summer smoke from fires in Montana, Idaho and British Columbia settles in the Flathead Valley and can take the mountains out of view for a week. Some Augusts are clear; others end the hiking. Source ↗
Nearby, and something's on
Within 300 km of Whitefish — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Whitefish?
Whitefish in September — FAQ
- Is September a good time to visit Whitefish?
- September in Whitefish: nice, a little rain, with clean air — not the best time to visit. It ranks #10 of 12 months for Whitefish on SeasonMap's comfort score (18/100).
- What is the weather like in Whitefish in September?
- In September, Whitefish averages a daily high of 21.6°C and a low of 9.7°C, with about 46.7 mm of rain over roughly 8.4 rainy days.
- What is the air quality in Whitefish in September?
- Whitefish has a mean US Air Quality Index of about 34 in September.
- Does it snow in Whitefish in September?
- Whitefish sees roughly 2.7 cm of snowfall in September.
Other months in Whitefish
Compare Whitefish in September
Warmer or cooler than Whitefish in September
Similar destinations in North America — September
Within 300 km: Glacier National Park's Going-to-the-Sun Road opens around 20 Jun – 20 Oct.