Williston weather by month & the best time to visit
🇺🇸 United States · small town · hot-summer continental climate
The best time to visit Williston is August — its sunniest month (Sunshine Score 87/100), with September and July close behind. Williston averages about 2,703 hours of sunshine a year. Daytime highs around 27°C / 81°F and roughly 42 mm of rain in August.
Jump to: month-by-month table · nearby alternatives · embed this data
- Sun hours / year
- 2,703
- Sunniest month
- August
- Peak score
- 87/100
- Rain / year
- 424 mm
- Snow / year
- ≈1.2 m
- Midday UV at peak
- 7 (high)
- Population
- 27k
- Elevation
- 707 m
When is the best time to visit Williston?
For sunshine, the best time to visit Williston is August, then September and July. The dullest month is January (0/100, 16 mm of rain). The full month-by-month picture is in the table below.
How sunny is Williston?
Williston gets a lot of sun: around 2,703 hours a year. 87 Sunshine Score points separate August (87) from January (0), so the month you pick matters. It ranks #140 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. Rain has a clear season: the wettest stretch, around June, carries about 47% of the annual 424 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | -6° / 21°F | -15° / 5°F | 16 mm | 1 |
| February | 0 | -4° / 25°F | -14° / 7°F | 13 mm | 2 |
| March | 0 | 4° / 39°F | -7° / 19°F | 20 mm | 3 |
| April | 30 | 12° / 54°F | -1° / 30°F | 32 mm | 4 |
| May | 76 | 19° / 66°F | 5° / 41°F | 66 mm | 6 |
| June | 80 | 24° / 75°F | 11° / 52°F | 81 mm | 7 |
| July | 85 | 29° / 84°F | 15° / 59°F | 53 mm | 7 |
| August | 87 | 27° / 81°F | 13° / 55°F | 42 mm | 6 |
| September | 87 | 21° / 70°F | 7° / 45°F | 41 mm | 4 |
| October | 22 | 11° / 52°F | 0° / 32°F | 28 mm | 2 |
| November | 0 | 3° / 37°F | -6° / 21°F | 15 mm | 1 |
| December | 0 | -4° / 25°F | -12° / 10°F | 17 mm | 1 |
See Williston on the interactive sunshine globe →
Nearby places for sunshine
- Minot United States · 183 km · best in Sep · 2,684 h sun/yr
- Regina Canada · 250 km · best in Sep · 2,633 h sun/yr
- Bismarck United States · 280 km · best in Sep · 2,676 h sun/yr
- Billings United States · 454 km · best in Jul · 2,701 h sun/yr
- Rapid City United States · 472 km · best in Sep · 2,793 h sun/yr
- Saskatoon Canada · 483 km · best in Aug · 2,625 h sun/yr
Nearest destinations
- Sidney United States · 70 km · 2,754 h sun/yr · best in Aug
- Wolf Point United States · 136 km · 2,748 h sun/yr · best in Sep
- Glendive United States · 148 km · 2,753 h sun/yr · best in Aug
- Dickinson United States · 178 km · 2,736 h sun/yr · best in Aug
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