Sioux Falls weather by month & the best time to visit
🇺🇸 United States · regional city · hot-summer continental climate
The best time to visit Sioux Falls is July — its sunniest month (Sunshine Score 81/100), with September and August close behind. Sioux Falls averages about 2,583 hours of sunshine a year. Daytime highs around 31°C / 88°F and roughly 74 mm of rain in July.
Jump to: month-by-month table · nearby alternatives · embed this data
- Sun hours / year
- 2,583
- Sunniest month
- July
- Peak score
- 81/100
- Rain / year
- 668 mm
- Snow / year
- ≈1.4 m
- Midday UV at peak
- 8 (very high)
- Population
- 172k
- Elevation
- 432 m
When is the best time to visit Sioux Falls?
For sunshine, the best time to visit Sioux Falls is July, then September and August. The dullest month is January (0/100, 12 mm of rain). The full month-by-month picture is in the table below.
How sunny is Sioux Falls?
Sioux Falls gets a lot of sun: around 2,583 hours a year. 81 Sunshine Score points separate July (81) from January (0), so the month you pick matters. It ranks #177 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 41% of the annual 668 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | -3° / 27°F | -12° / 10°F | 12 mm | 1 |
| February | 0 | -1° / 30°F | -11° / 12°F | 18 mm | 3 |
| March | 0 | 8° / 46°F | -4° / 25°F | 34 mm | 4 |
| April | 47 | 15° / 59°F | 2° / 36°F | 72 mm | 5 |
| May | 78 | 22° / 72°F | 9° / 48°F | 90 mm | 6 |
| June | 74 | 27° / 81°F | 15° / 59°F | 107 mm | 7 |
| July | 81 | 31° / 88°F | 18° / 64°F | 74 mm | 8 |
| August | 79 | 29° / 84°F | 16° / 61°F | 83 mm | 7 |
| September | 80 | 24° / 75°F | 12° / 54°F | 77 mm | 5 |
| October | 49 | 15° / 59°F | 3° / 37°F | 55 mm | 3 |
| November | 0 | 7° / 45°F | -3° / 27°F | 23 mm | 2 |
| December | 0 | -1° / 30°F | -10° / 14°F | 23 mm | 1 |
See Sioux Falls on the interactive sunshine globe →
Nearby places for sunshine
- Omaha United States · 263 km · best in Jul · 2,482 h sun/yr
- Lincoln United States · 305 km · best in Jul · 2,608 h sun/yr
- Minneapolis United States · 315 km · best in Sep · 2,337 h sun/yr
- Des Moines United States · 340 km · best in Sep · 2,394 h sun/yr
- Rochester (Minnesota) United States · 343 km · best in Jul · 2,340 h sun/yr
- Fargo United States · 371 km · best in Aug · 2,543 h sun/yr
Nearest destinations
- Sioux City United States · 135 km · 2,558 h sun/yr · best in Jul
- Fort Dodge United States · 237 km · 2,443 h sun/yr · best in Sep
- Mason City United States · 280 km · 2,397 h sun/yr · best in Sep
- Pierre United States · 297 km · 2,713 h sun/yr · best in Sep
- Saint Cloud United States · 304 km · 2,423 h sun/yr · best in Sep
Head-to-head
How Sioux Falls compares month by month: Sioux Falls vs Minneapolis · Sioux Falls vs Omaha · Sioux Falls vs Lincoln · all comparisons
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