Click on a day for an hourly weather forecast
The weather in Kalispell in May is very cold with temperatures between 3°C and 17°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Kalispell. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Kalispell in May 2025.
If you’re planning to visit Kalispell in the near future, we highly recommend that you review the 14 day weather forecast for Kalispell before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -3° / -10° | 12 | 12 | 7 | 56 mm | Awful | Kalispell in January |
| February | -2° / -10° | 14 | 8 | 7 | 55 mm | Awful | Kalispell in February |
| March | 4° / -5° | 14 | 12 | 7 | 63 mm | Awful | Kalispell in March |
| April | 9° / -2° | 13 | 13 | 4 | 68 mm | Awful | Kalispell in April |
| May | 17° / 3° | 10 | 21 | 0 | 69 mm | Ok | Kalispell in May |
| June | 21° / 7° | 9 | 21 | 0 | 78 mm | Ok | Kalispell in June |
| July | 27° / 11° | 5 | 26 | 0 | 17 mm | Perfect | Kalispell in July |
| August | 27° / 11° | 4 | 27 | 0 | 31 mm | Perfect | Kalispell in August |
| September | 21° / 7° | 5 | 25 | 0 | 41 mm | Good | Kalispell in September |
| October | 10° / 1° | 9 | 20 | 2 | 70 mm | Awful | Kalispell in October |
| November | 1° / -5° | 14 | 10 | 7 | 66 mm | Awful | Kalispell in November |
| December | -4° / -10° | 16 | 8 | 8 | 66 mm | Awful | Kalispell in December |