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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Thermopolis, WY
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September
Average Temperature
High
25°
Feels 24
Low
8°
Feels 6
Average Precipitation
6 Days
Rain amount
23.8mm
Snow amount
1.2cm
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Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
29°
12
24°
13
29°
14
21°
15
22°
16
22°
17
24°
18
24°
19
24°
20
24°
21
23°
22
22°
23
22°
24
21°
25
22°
26
27
28
29
30
Forecast
Friday, September 11, 2026
Day
29°
Feels 29
Wind
20 km/h SW
Gust
30 km/h
Humidity
15%
P.O.P
40%
Rain
<1 mm
Night
8°
Feels 8
Wind
20 km/h N
Gust
30 km/h
Humidity
81%
P.O.P
20%
Historical Averages
Sep 11
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.