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The temperatures in Pocatello in September are comfortable with low of 10°C and and high up to 25°C.
The wather in Pocatello 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 Pocatello in September 2025.
If you’re planning to visit Pocatello in the near future, we highly recommend that you review the 14 day weather forecast for Pocatello before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -1° / -9° | 7 | 7 | 17 | 60 mm | Awful | Pocatello in January |
| February | 1° / -7° | 8 | 5 | 17 | 59 mm | Awful | Pocatello in February |
| March | 7° / -2° | 8 | 11 | 12 | 72 mm | Awful | Pocatello in March |
| April | 13° / 1° | 8 | 17 | 5 | 64 mm | Awful | Pocatello in April |
| May | 18° / 5° | 8 | 21 | 1 | 69 mm | Ok | Pocatello in May |
| June | 25° / 9° | 3 | 27 | 0 | 37 mm | Perfect | Pocatello in June |
| July | 31° / 14° | 1 | 30 | 0 | 22 mm | Good | Pocatello in July |
| August | 30° / 14° | 2 | 29 | 0 | 32 mm | Good | Pocatello in August |
| September | 25° / 10° | 2 | 28 | 0 | 36 mm | Perfect | Pocatello in September |
| October | 15° / 4° | 4 | 25 | 2 | 52 mm | Ok | Pocatello in October |
| November | 7° / -2° | 5 | 16 | 9 | 41 mm | Bad | Pocatello in November |
| December | -1° / -8° | 8 | 7 | 18 | 59 mm | Awful | Pocatello in December |