Sioux Falls vs Williston Climate
65%matchOn climate, Williston is a 65% match for Sioux Falls. Compared with Sioux Falls, Williston has the same summer highs, 5°F (3°C) colder winter nights and less rain.
Sioux Falls gets 25 in (633 mm) of rain a year and Williston 15 in (373 mm). July is the warmest month in both, with highs of 85°F (30°C) in Sioux Falls and 85°F (30°C) in Williston.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
Sioux FallsWillistonsolid = high, dashed = low
Rain (in per month)
Sioux FallsWilliston
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Sioux Falls | Williston | Sioux Falls | Williston | Sioux Falls | Williston | |
| Jan | 27°F(-3°C) | 23°F(-5°C) | 7°F(-14°C) | 2°F(-17°C) | 0.5 in(13 mm) | 0.5 in(12 mm) |
| Feb | 32°F(0°C) | 28°F(-2°C) | 12°F(-11°C) | 6°F(-14°C) | 0.7 in(18 mm) | 0.4 in(9 mm) |
| Mar | 45°F(7°C) | 42°F(5°C) | 24°F(-5°C) | 19°F(-7°C) | 1.3 in(34 mm) | 0.7 in(18 mm) |
| Apr | 58°F(15°C) | 57°F(14°C) | 35°F(2°C) | 31°F(-1°C) | 2.6 in(67 mm) | 1.1 in(27 mm) |
| May | 71°F(22°C) | 69°F(20°C) | 47°F(8°C) | 42°F(6°C) | 3.5 in(88 mm) | 2.1 in(54 mm) |
| Jun | 81°F(27°C) | 78°F(26°C) | 58°F(14°C) | 52°F(11°C) | 4.0 in(101 mm) | 2.6 in(65 mm) |
| Jul | 85°F(30°C) | 85°F(30°C) | 63°F(17°C) | 58°F(14°C) | 2.8 in(71 mm) | 2.5 in(63 mm) |
| Aug | 83°F(28°C) | 84°F(29°C) | 60°F(16°C) | 55°F(13°C) | 2.8 in(72 mm) | 1.6 in(41 mm) |
| Sep | 76°F(24°C) | 74°F(23°C) | 51°F(10°C) | 46°F(8°C) | 3.1 in(79 mm) | 1.3 in(34 mm) |
| Oct | 61°F(16°C) | 57°F(14°C) | 37°F(3°C) | 32°F(0°C) | 1.8 in(46 mm) | 0.9 in(22 mm) |
| Nov | 44°F(7°C) | 39°F(4°C) | 23°F(-5°C) | 18°F(-8°C) | 0.9 in(24 mm) | 0.6 in(16 mm) |
| Dec | 31°F(-1°C) | 27°F(-3°C) | 12°F(-11°C) | 7°F(-14°C) | 0.8 in(20 mm) | 0.5 in(12 mm) |
1991–2020 averages, by calendar month.