Overall on the next 14 days there will be 1 days with snow in Cheyenne and a total of 8.4 cm of snow.
It will be snowy on the following days:
Cheyenne weather in September 2026
Click on a day for an hourly weather forecast
Friday
Sep 18
9.3 mm
26° / 15°
Saturday
Sep 19
0.8 mm
24° / 13°
Sunday
Sep 20
1.8 mm
21° / 10°
Monday
Sep 21
0 mm
23° / 10°
Tuesday
Sep 22
0 mm
25° / 11°
Wednesday
Sep 23
0 mm
24° / 13°
Thursday
Sep 24
0 mm
24° / 14°
Friday
Sep 25
0 mm
23° / 12°
Saturday
Sep 26
0 mm
26° / 14°
Sunday
Sep 27
0 mm
24° / 16°
Monday
Sep 28
2.8 mm
21° / 9°
Tuesday
Sep 29
0.8 mm
15° / 6°
Wednesday
Sep 30
8.4 cm
7° / 3°
Thursday
Oct 1
0 mm
13° / 3°
🌨️ Snowy days in Cheyenne 2026 (September)
The average weather in Cheyenne in September
The temperatures in Cheyenne in September are comfortable with low of 12°C and and high up to 24°C.
The wather in Cheyenne in September can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in Cheyenne in September 2026.
If you’re planning to visit Cheyenne in the near future, we highly recommend that you review the 14 day weather forecast for Cheyenne before you arrive.
Temperatures
24° / 12°
Rainy Days
2
Snowy Days
0
Dry Days
28
Rainfall
46
mm
Sun Hours
10.0
Hrs
Historic average weather for September
Click on a day for an hourly weather forecast
Explore the weather in Cheyenne in other months
Cheyenne annual weather
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 3° / -5° | 3 | 16 | 12 | 27 mm | Awful | Cheyenne in January |
| February | 2° / -6° | 4 | 10 | 15 | 42 mm | Awful | Cheyenne in February |
| March | 8° / -1° | 5 | 15 | 12 | 77 mm | Bad | Cheyenne in March |
| April | 12° / 1° | 5 | 15 | 10 | 101 mm | Bad | Cheyenne in April |
| May | 17° / 6° | 10 | 16 | 5 | 149 mm | Bad | Cheyenne in May |
| June | 25° / 12° | 6 | 24 | 0 | 77 mm | Perfect | Cheyenne in June |
| July | 28° / 16° | 4 | 27 | 0 | 83 mm | Perfect | Cheyenne in July |
| August | 28° / 15° | 3 | 28 | 0 | 52 mm | Perfect | Cheyenne in August |
| September | 24° / 12° | 2 | 28 | 0 | 46 mm | Perfect | Cheyenne in September |
| October | 14° / 4° | 3 | 23 | 5 | 49 mm | Ok | Cheyenne in October |
| November | 8° / -1° | 2 | 19 | 9 | 31 mm | Bad | Cheyenne in November |
| December | 2° / -6° | 5 | 15 | 11 | 33 mm | Awful | Cheyenne in December |
Temperatures in Cheyenne in September
Rain in Cheyenne in September
Weather in Cheyenne in September - FAQ
What is the average temperature in Cheyenne in September?
The average temperature in Cheyenne in September is 12/24° C.
What is the chance of rain in Cheyenne in September?
On average, there are 2 rainy days in Cheyenne during September.
Weather wise, is September a good time to visit Cheyenne?
The weather in Cheyenne in September is perfect.
Can it snow in Cheyenne in September?
On average, there are 0 snowy days in Cheyenne in September.
More about the weather in Cheyenne