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Monthly
Precipitation
Temperature
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Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Yellowstone Lake, WY
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September
Average Temperature
High
16°
Feels 15
Low
1°
Feels -2
Average Precipitation
5 Days
Rain amount
11.1mm
Snow amount
0.5cm
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Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
18°
3
18°
4
20°
5
20°
6
20°
7
12°
8
14°
9
17°
10
17°
11
16°
12
15°
13
15°
14
15°
15
16°
16
16°
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Forecast
Wednesday, September 2, 2026
Day
18°
Feels 18
Wind
37 km/h S
Gust
56 km/h
Humidity
27%
P.O.P
20%
Night
4°
Feels 0
Wind
28 km/h SW
Gust
42 km/h
Humidity
65%
P.O.P
20%
Historical Averages
Sep 2
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.