Wyoming - National parks weather in September 2025
Wyoming - National parks weather in September 2025
Day
20 °C
Night
0 °C
Precipitation
40 mm
in month
Rainy days
8 days
in month
Daylight
12 hours
average
Sunshine
9 hours
average
Humidity
50 %
Day
20 °C
Night
0 °C
Precipitation
40 mm
in month
Rainy days
8 days
in month
Daylight
12 hours
average
Sunshine
9 hours
average
Humidity
50 %
Overview: Wyoming - National parks
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Weather charts for Wyoming - National parks
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Weather overview and FAQs
Weather overview
In Wyoming - National parks in September, the average air temperature ranges from 20 °C (67 °F) during the day to 0 °C (32 °F) at night. There are 8 days of rain on average, where the rainfall is 40 mm (1.58 in).
Is September a good month to visit Wyoming - National parks?
There are good conditions for visiting in Wyoming - National parks in September. There are only 8 days of rain in the whole month, so you can leave your umbrella at home. There are some people, who may feel a slight chill at 20 °C (67 °F), but others will feel perfectly fine. The night temperature of 0 °C (32 °F) is not inviting for evening and night activities except for visiting a bar and having beer or two.
What temperature can I expect during the day in September in Wyoming - National parks?
In September in Wyoming - National parks, the average daily temperatures will be 20 °C (67 °F). Nice temperature for walking around the city or on the beach, but you will probably get cold soon when wearing a swimsuit. When walking around all day, people used to cold conditions, pull out their shorts and get rid of their sweaters. On some days, when spending time in the direct sun, sunscreen can be useful, especially for people with more sensitive skin.
How many rainy days can I expect in September in Wyoming - National parks?
There are 8 days, which are rainy in Wyoming - National parks in September, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 1.9 days of the week, or in general - 26 % days.
What is the temperature trend in September in Wyoming - National parks?
During September in Wyoming - National parks, the day temperatures are decreasing - from 22 °C (72 °F) at the beginning of the month to 16 °C (60 °F) at the end of the month.
Can I expect a freeze in Wyoming - National parks in September?
It is possible that it will be freezing in September in Wyoming - National parks, night temperatures will be 0 °C (32 °F) on average.
How long is the day (from dawn till dusk) in Wyoming - National parks in September?
The length of daylight in Wyoming - National parks in September is 12 hours.
How many sunny hours can I expect in September in Wyoming - National parks?
There is an average length of sunshine of 9 hours per day in September in Wyoming - National parks.
How windy is Wyoming - National parks in September?
In Wyoming - National parks in September, there will be an average wind scale of 3.
How humid is Wyoming - National parks in September?
Humidity in Wyoming - National parks in September is 50 %.
Is the weather in Wyoming - National parks warmer in September than in August?
No, September is not warmer in Wyoming - National parks than August.