Cool
Average highs are around 19°C, so pack for cooler days.
September verdict
Jackson, Wyoming, United States in September
Weather score46Mixed
Mixed for holiday weather
Average highs are around 19°C, so pack for cooler days. Sunshine averages 8.9h per day, so bright days are a strong part of the month. Rainfall averages 36mm, which is relatively low for holiday planning.
September weather
Monthly averages
Temp
19°C
Rain
36mm
Sun
8.9h
Weather score
46
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 36mm, which is relatively low for holiday planning.
Bright
Sunshine averages 8.9h per day, so bright days are a strong part of the month.
Map
Weather map
Compare Jackson, Wyoming, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September19°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September36mm average rain
September is close to Jackson's usual rainfall pattern, with little seasonal change across the year.
Driest monthsAll year
Rainfall stays comparatively low through the year.
Sun
September8.9 hours average sun
September sits close to Jackson's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
September46 weather score
September sits close to Jackson's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
