Click on a day for an hourly weather forecast
The temperatures in Williston in May are quite cold with temperatures between 8°C and 18°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Williston during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Please note that Williston can expect a few days of snow in May.
Our weather forecast can give you a great sense of what weather to expect in Williston in May 2025.
If you’re planning to visit Williston in the near future, we highly recommend that you review the 14 day weather forecast for Williston before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -7° / -14° | 2 | 14 | 15 | 25 mm | Awful | Williston in January |
| February | -7° / -14° | 3 | 11 | 15 | 23 mm | Awful | Williston in February |
| March | 3° / -5° | 4 | 15 | 12 | 31 mm | Awful | Williston in March |
| April | 10° / 1° | 4 | 20 | 6 | 49 mm | Bad | Williston in April |
| May | 18° / 8° | 7 | 23 | 1 | 102 mm | Ok | Williston in May |
| June | 24° / 14° | 7 | 24 | 0 | 107 mm | Good | Williston in June |
| July | 29° / 17° | 4 | 27 | 0 | 81 mm | Good | Williston in July |
| August | 28° / 17° | 4 | 27 | 0 | 59 mm | Perfect | Williston in August |
| September | 23° / 12° | 3 | 27 | 0 | 54 mm | Perfect | Williston in September |
| October | 12° / 4° | 4 | 24 | 3 | 40 mm | Bad | Williston in October |
| November | 3° / -4° | 2 | 19 | 9 | 20 mm | Awful | Williston in November |
| December | -6° / -12° | 2 | 14 | 15 | 22 mm | Awful | Williston in December |