Weather in Yellowstone: September
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Average day temperature: | 58.9°F |
| Average night temperature: | 39.4°F | |
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Number of sunny days: | 21 days |
| Day length: | 11.7 - 13.2 hours | |
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Number of rainy days: | 4 days |
| Precipitation totals: | 1.9 in. | |
| more information | ||
14 days
forecast
forecast
| Yellowstone |
weather in
October
October
| Yellowstone |
Air temperature in September, °F
Show year:
2023
2022
2021
The highest day temperature during September of 2023 was 68°F. At the same time the lowest night temperature was 32°F. Day and night temperature averages during September were 58.9°F and 42.6°F.
Sunny, partly cloudy and cloudy days
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Yellowstone in September is 2.2 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 7.0 mph It makes September one of the most windy months of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 9.6.
Best time for vacation in Yellowstone
Yellowstone on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Yellowstone
Local time: 10:06
April 27, saturday
1200
41°F
W
5 mph
5 mph
1500
41°F
NE
4 mph
4 mph
1800
36°F
NE
10 mph
10 mph
2100
34°F
NE
5 mph
5 mph
April 28, sunday
0000
32°F
N
4 mph
4 mph
0300
30°F
NE
6 mph
6 mph
0600
27°F
N
4 mph
4 mph
0900
30°F
N
6 mph
6 mph
