Today
Mostly clear throughout the day, high +73°, low +52°. Wind up to 6 mph. No rain expected.
Weather in Sioux City
United States · Iowa · 42.5000, -96.4003
Today Now 6:03 AM
+52° Clear
Hourly forecast
Today10/21
Temperature°F
Cloudiness
Precipitation
Windmph
Wind gusts
Humidity
PressureinHg
Dew point°F
Visibilitymi
UV index
Forecast in words
Tomorrow
Tomorrow fog: daytime +75°, nighttime +54°, weather holds steady.
Week
Seven days ahead fall within +36°…+75°. Weekly maximum — +75° (Thu). Coldest at night — Tue, +36°. Days with precipitation — Sun, Mon. Second half of the week is cooler.
Week vs norm
- Today 10/21 +73° +12° usually +62°
- Tomorrow 10/22 +75° +14° usually +61°
- Fri 10/23 +75° +14° usually +61°
- Sat 10/24 +75° +15° usually +60°
- Sun 10/25 +64° +5° usually +60°
- Mon 10/26 +54° −6° usually +59°
- Tue 10/27 +48° −10° usually +59°
- Wed 10/28 +45° −13° usually +58°
Difference between forecast daytime high and the 1991–2020 norm for this date.
This day, October 21
Today is warmer than usual for this date.
- Heat record +81° 2024
- Cold record +30° 1995
- Most precipitation 0.7 in 2009
- Strongest gust 47 mph 2017
Records for this calendar date, 1991-2024, ERA5 reanalysis.
Climate in Sioux City
Today is about 9° warmer than usual for October.
| Month | Daytime / Nighttime | Average | Precipitation in |
|---|---|---|---|
| Jan | +30° / +13° | +20° | 1.1 |
| Feb | +35° / +17° | +25° | 1.2 |
| Mar | +49° / +28° | +37° | 2.3 |
| Apr | +62° / +39° | +49° | 4.0 |
| May | +72° / +51° | +61° | 5.1 |
| Jun | +82° / +62° | +71° | 4.8 |
| Jul | +86° / +66° | +76° | 3.1 |
| Aug | +84° / +64° | +74° | 3.8 |
| Sep | +78° / +56° | +66° | 2.9 |
| Oct | +65° / +44° | +53° | 2.4 |
| Nov | +48° / +30° | +38° | 1.6 |
| Dec | +35° / +19° | +26° | 1.3 |
Climatic normals for 1991–2025 years from ERA5-Land reanalysis.
Astronomical data
Sunrise / sunset
7:46 AM | 6:33 PM
Moon
4:23 PM | 2:38 AM
Moon phase
Waxing gibbous 78%
Next solar eclipse
Calculating for this city…