Sioux City weather by month & the best time to visit
🇺🇸 United States · small town · hot-summer continental climate
The best time to visit Sioux City is July — its sunniest month (Sunshine Score 79/100), with September and August close behind. Sioux City averages about 2,558 hours of sunshine a year. Daytime highs around 31°C / 88°F and roughly 80 mm of rain in July.
Jump to: month-by-month table · nearby alternatives · embed this data
- Sun hours / year
- 2,558
- Sunniest month
- July
- Peak score
- 79/100
- Rain / year
- 750 mm
- Snow / year
- ≈1.3 m
- Midday UV at peak
- 8 (very high)
- Population
- 83k
- Elevation
- 333 m
When is the best time to visit Sioux City?
For sunshine, the best time to visit Sioux City is July, then September and August. 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 Sioux City?
Sioux City gets a lot of sun: around 2,558 hours a year. 79 Sunshine Score points separate July (79) from January (0), so the month you pick matters. It ranks #182 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. The year's 750 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | -1° / 30°F | -11° / 12°F | 16 mm | 1 |
| February | 0 | 1° / 34°F | -10° / 14°F | 21 mm | 3 |
| March | 7 | 9° / 48°F | -3° / 27°F | 41 mm | 4 |
| April | 53 | 16° / 61°F | 3° / 37°F | 78 mm | 5 |
| May | 75 | 22° / 72°F | 10° / 50°F | 104 mm | 6 |
| June | 73 | 28° / 82°F | 16° / 61°F | 113 mm | 8 |
| July | 79 | 31° / 88°F | 19° / 66°F | 80 mm | 8 |
| August | 77 | 30° / 86°F | 17° / 63°F | 95 mm | 7 |
| September | 79 | 25° / 77°F | 13° / 55°F | 83 mm | 5 |
| October | 55 | 16° / 61°F | 4° / 39°F | 60 mm | 3 |
| November | 0 | 8° / 46°F | -2° / 28°F | 30 mm | 2 |
| December | 0 | 0° / 32°F | -8° / 18°F | 29 mm | 1 |
See Sioux City on the interactive sunshine globe →
Nearby places for sunshine
- Omaha United States · 128 km · best in Jul · 2,482 h sun/yr
- Sioux Falls United States · 135 km · best in Jul · 2,583 h sun/yr
- Lincoln United States · 176 km · best in Jul · 2,608 h sun/yr
- Des Moines United States · 245 km · best in Sep · 2,394 h sun/yr
- Rochester (Minnesota) United States · 357 km · best in Jul · 2,340 h sun/yr
- Kansas City United States · 372 km · best in Sep · 2,456 h sun/yr
Nearest destinations
- Fort Dodge United States · 181 km · 2,443 h sun/yr · best in Sep
- Grand Island United States · 226 km · 2,761 h sun/yr · best in Sep
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