Vernal Weather in September

What's the weather like in Vernal (Utah) in September 2025?

The climate in Vernal during September can be summarized as mild and dry.

September is in the fall / autumn in Vernal and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 25°C (76°F), whilst at night 5°C (41°F) is normal.

Vernal weather averages (imperial / metric)
Daytime temperature 24.6°C 76.2°F
Nightly temperature 4.9°C 40.7°F
Average temperature 14.7°C 58.5°F
Daily sunshine 10.3 hrs
Avg rainfall 22 mm 0.9 ins
Rainy days 6 days
Sea temperature 17°C 62.5°F
Humidity 43%
Windspeed 14.8kph 9 mph

On average September is the 3rd wettest month of the year in Vernal with around 22mm 0.9 inches of rain making it a dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.

On the flip side this corresponds to an average of 10.3 hours of sunshine per day.

September temperatures in Vernal

Vernal average temperature in September

September rainfall

Vernal average rain in September

September hourly sunshine

Vernal average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Vernal in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Vernal weather stats

Vernal weather statistics
Hottest month: July 31.1°C 88°F
Driest month: February 12mm 0.5ins
Sunniest month: July 12.2hrs
Coldest month: January -2.3°C 27.9°F
Wettest month: October 26mm 1ins
Map showing location of Vernal (40.45552, -109.52875) Vernal map pin © Google

Locations nearby

Top United States locations