September · United States
Best time to visit Jackson Hole in September Weather, crowds & prices
Weather in Jackson Hole in September
Average temperature 12°C, 49 mm of rain, about 19 days with 6+ hours of sunshine and 53% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
1.7/10
Ranked #12 of 12 months
- Avg temp
- 12°C
- Rainfall
- 49 mm
- Humidity
- 53%
- Days with 6h+ sun
- 19
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Jackson Hole scores 1.7/10 for snow and ski travel - ranked #12 of 12. Expect around 12°C, 49 mm of rain, and roughly 19 days with 6+ hours of sunshine this month.
Tetons rising over wooden-boardwalk town shine through December-March for snow, July-September for trails.
September in Jackson Hole — the hardest end of the year
September averages 12°C (53°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 49 mm, so plan one flexible day in three; you still get about 19 days with 6+ hours of sunshine and 12.3 hours of daylight.
It scores 1.7/10 here, 12th of 12 months, against 9.7/10 in the destination's best month.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
Figure on low-season pricing, with crowds are light for this destination.
Flexible dates? April scores 8 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Jackson Hole in September?
- In September, Jackson Hole averages 12°C, 49 mm of rain, and about 19 days with 6+ hours of sunshine. Its climate-comfort score is 1.7/10.
- Is September a good time to visit Jackson Hole?
- September earns a 1.7/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Jackson Hole in September?
- Expect about 49 mm of rain in September. Average humidity is 53% and there are about 19 days with 6+ hours of sunshine.
Curated in Jackson Hole
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Jackson Hole, United States. Live activities and tours from GetYourGuide, matched to this destination.