Bismarck weather by month & the best time to visit
🇺🇸 United States · small town · hot-summer continental climate
The best time to visit Bismarck is September — its sunniest month (Sunshine Score 86/100), with August and July close behind. Bismarck averages about 2,676 hours of sunshine a year. Daytime highs around 23°C / 73°F and roughly 49 mm of rain in September.
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- Sun hours / year
- 2,676
- Sunniest month
- September
- Peak score
- 86/100
- Rain / year
- 500 mm
- Snow / year
- ≈1.3 m
- Midday UV at peak
- 8 (very high)
- Population
- 75k
- Elevation
- 500 m
When is the best time to visit Bismarck?
For sunshine, the best time to visit Bismarck is September, then August and July. The dullest month is January (0/100, 14 mm of rain). The full month-by-month picture is in the table below.
How sunny is Bismarck?
Bismarck gets a lot of sun: around 2,676 hours a year. 86 Sunshine Score points separate September (86) from January (0), so the month you pick matters. It ranks #150 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 500 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | -5° / 23°F | -14° / 7°F | 14 mm | 1 |
| February | 0 | -3° / 27°F | -13° / 9°F | 13 mm | 2 |
| March | 0 | 5° / 41°F | -6° / 21°F | 24 mm | 3 |
| April | 37 | 13° / 55°F | 0° / 32°F | 38 mm | 4 |
| May | 81 | 20° / 68°F | 7° / 45°F | 77 mm | 6 |
| June | 78 | 26° / 79°F | 13° / 55°F | 93 mm | 7 |
| July | 83 | 30° / 86°F | 17° / 63°F | 64 mm | 8 |
| August | 84 | 29° / 84°F | 15° / 59°F | 57 mm | 6 |
| September | 86 | 23° / 73°F | 9° / 48°F | 49 mm | 5 |
| October | 37 | 13° / 55°F | 1° / 34°F | 37 mm | 3 |
| November | 0 | 4° / 39°F | -5° / 23°F | 14 mm | 1 |
| December | 0 | -3° / 27°F | -11° / 12°F | 20 mm | 1 |
See Bismarck on the interactive sunshine globe →
Nearby places for sunshine
- Minot United States · 170 km · best in Sep · 2,684 h sun/yr
- Fargo United States · 299 km · best in Aug · 2,543 h sun/yr
- Rapid City United States · 353 km · best in Sep · 2,793 h sun/yr
- Winnipeg Canada · 435 km · best in Aug · 2,491 h sun/yr
- Sioux Falls United States · 473 km · best in Jul · 2,583 h sun/yr
- Regina Canada · 498 km · best in Sep · 2,633 h sun/yr
Nearest destinations
- Dickinson United States · 156 km · 2,736 h sun/yr · best in Aug
- Jamestown United States · 158 km · 2,671 h sun/yr · best in Sep
- Devils Lake United States · 203 km · 2,673 h sun/yr · best in Aug
- Pierre United States · 268 km · 2,713 h sun/yr · best in Sep
- Williston United States · 280 km · 2,703 h sun/yr · best in Aug
Head-to-head
How Bismarck compares month by month: Bismarck vs Regina · Bismarck vs Fargo · Bismarck vs Rapid City · Bismarck vs Minot · all comparisons
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