Climate Sioux City - Iowa
| JanJa | FebFe | MarMa | AprAp | MayMa | JunJu | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 31 | 35 | 47 | 62 | 73 | 82 |
| Average low in ºF Av. low Lo | 10 | 15 | 26 | 37 | 49 | 59 |
| Av. precipitation in inch Av. precip. Pre. | 0.62 | 0.67 | 2.00 | 2.95 | 3.74 | 3.89 |
| Av. snowfall in inch Snowfall Sn | 7 | 7 | 7 | 2 | 0 | 0 |
| JulJu | AugAu | SepSe | OctOc | NovNo | DecDe | |
|---|---|---|---|---|---|---|
| Average high in ºF Av. high Hi | 85 | 83 | 76 | 63 | 46 | 32 |
| Average low in ºF Av. low Lo | 63 | 61 | 51 | 38 | 25 | 13 |
| Av. precipitation in inch Av. precip. Pre. | 3.44 | 3.23 | 2.96 | 2.13 | 1.31 | 0.80 |
| Av. snowfall in inch Snowfall Sn | 0 | 0 | 0 | 1 | 4 | 8 |
What is the average weather in Sioux City, Iowa?
Sioux City experiences a humid continental climate, marked by very strong seasonal contrasts. Summers are warm and bring the most precipitation, while winters are cold and snowy. Significant snowfall is a notable feature, with winter moisture often arriving as snow. Precipitation is moderate overall, spread relatively evenly throughout the year.
Sioux City Climate Graph - Iowa Climate Chart
Daily normals Sioux City - Iowa - January
Day | High ºF | Low ºF | Prec/mo inch | Prec/yr inch | Snow/mo inch | Snow/yr inch |
|---|---|---|---|---|---|---|
| 1 Jan | 29.5 | 11.3 | 0.02 | 0.02 | 0.20 | 0.20 |
| 2 Jan | 29.4 | 11.2 | 0.05 | 0.05 | 0.50 | 0.50 |
| 3 Jan | 29.3 | 11.0 | 0.07 | 0.07 | 0.70 | 0.70 |
| 4 Jan | 29.2 | 10.9 | 0.10 | 0.10 | 0.90 | 0.90 |
| 5 Jan | 29.2 | 10.8 | 0.12 | 0.12 | 1.10 | 1.10 |
| 6 Jan | 29.1 | 10.7 | 0.15 | 0.15 | 1.40 | 1.40 |
| 7 Jan | 29.1 | 10.6 | 0.17 | 0.17 | 1.60 | 1.60 |
| 8 Jan | 29.1 | 10.5 | 0.20 | 0.20 | 1.90 | 1.90 |
| 9 Jan | 29.1 | 10.4 | 0.22 | 0.22 | 2.10 | 2.10 |
| 10 Jan | 29.1 | 10.3 | 0.25 | 0.25 | 2.40 | 2.40 |
| 11 Jan | 29.1 | 10.2 | 0.27 | 0.27 | 2.60 | 2.60 |
| 12 Jan | 29.1 | 10.2 | 0.29 | 0.29 | 2.90 | 2.90 |
| 13 Jan | 29.1 | 10.1 | 0.31 | 0.31 | 3.10 | 3.10 |
| 14 Jan | 29.1 | 10.1 | 0.33 | 0.33 | 3.30 | 3.30 |
| 15 Jan | 29.2 | 10.0 | 0.35 | 0.35 | 3.60 | 3.60 |
| 16 Jan | 29.2 | 10.0 | 0.37 | 0.37 | 3.80 | 3.80 |
| 17 Jan | 29.3 | 10.0 | 0.39 | 0.39 | 4.10 | 4.10 |
| 18 Jan | 29.3 | 10.0 | 0.41 | 0.41 | 4.30 | 4.30 |
| 19 Jan | 29.4 | 10.0 | 0.43 | 0.43 | 4.60 | 4.60 |
| 20 Jan | 29.5 | 10.0 | 0.45 | 0.45 | 4.80 | 4.80 |
| 21 Jan | 29.5 | 10.0 | 0.47 | 0.47 | 5.10 | 5.10 |
| 22 Jan | 29.6 | 10.1 | 0.50 | 0.50 | 5.30 | 5.30 |
| 23 Jan | 29.7 | 10.1 | 0.52 | 0.52 | 5.60 | 5.60 |
| 24 Jan | 29.8 | 10.2 | 0.54 | 0.54 | 5.90 | 5.90 |
| 25 Jan | 29.9 | 10.2 | 0.56 | 0.56 | 6.10 | 6.10 |
| 26 Jan | 30.0 | 10.3 | 0.58 | 0.58 | 6.40 | 6.40 |
| 27 Jan | 30.1 | 10.4 | 0.60 | 0.60 | 6.60 | 6.60 |
| 28 Jan | 30.2 | 10.5 | 0.62 | 0.62 | 6.90 | 6.90 |
| 29 Jan | 30.3 | 10.7 | 0.64 | 0.64 | 7.20 | 7.20 |
| 30 Jan | 30.5 | 10.8 | 0.67 | 0.67 | 7.40 | 7.40 |
| 31 Jan | 30.6 | 10.9 | 0.69 | 0.69 | 7.70 | 7.70 |
Weather history Sioux City - August 2026
| Day | High ºF | Low ºF | Precip. inch | Snow inch | Snow d. inch |
|---|---|---|---|---|---|
| 01 Aug | 84.9 | 60.1 | 0.00 | 0.00 | 0.0 |
| 02 Aug | 84.9 | 57.0 | 0.00 | 0.00 | 0.0 |
| 03 Aug | 87.1 | 62.1 | 0.00 | 0.00 | 0.0 |
| 04 Aug | 73.9 | 61.0 | 0.10 | 0.00 | 0.0 |
| 05 Aug | 78.1 | 57.0 | T | 0.00 | 0.0 |
| 06 Aug | 79.0 | 53.1 | 0.00 | 0.00 | 0.0 |
| 07 Aug | 84.9 | 55.9 | 0.00 | 0.00 | 0.0 |
| 08 Aug | 81.0 | 50.0 | 0.00 | 0.00 | 0.0 |
| 09 Aug | 87.1 | 64.9 | 0.00 | 0.00 | 0.0 |
| 10 Aug | 90.0 | 68.0 | T | 0.00 | 0.0 |
| 11 Aug | - | - | - | - | - |
| 12 Aug | - | - | - | - | - |
| 13 Aug | - | - | - | - | - |
| 14 Aug | - | - | - | - | - |
| 15 Aug | - | - | - | - | - |
| 16 Aug | - | - | - | - | - |
| 17 Aug | - | - | - | - | - |
| 18 Aug | - | - | - | - | - |
| 19 Aug | - | - | - | - | - |
| 20 Aug | - | - | - | - | - |
| 21 Aug | - | - | - | - | - |
| 22 Aug | - | - | - | - | - |
| 23 Aug | - | - | - | - | - |
| 24 Aug | - | - | - | - | - |
| 25 Aug | - | - | - | - | - |
| 26 Aug | - | - | - | - | - |
| 27 Aug | - | - | - | - | - |
| 28 Aug | - | - | - | - | - |
| 29 Aug | - | - | - | - | - |
| 30 Aug | - | - | - | - | - |
| 31 Aug | - | - | - | - | - |
Past weather Sioux City
| Aug 26 | Normal | ||
|---|---|---|---|
| Average high temperature Av. high temp. | 83.1 ºF | 31 ºF | |
| Average low temperature Av. low temp. | 58.9 ºF | 10 ºF | |
| Total precipitation Total precip. | 0.10 inch | 0.62 inch | |
| Total snowfall Total snowfall | 0.00 inch | 7 inch | |
| Highest max temperature Highest max temp. | 90.0 ºF | - | |
| Lowest max temperature Lowest max temp. | 73.9 ºF | - | |
| Highest min temperature Highest min temp. | 68.0 ºF | - | |
| Lowest min temperature Lowest min temp. | 50.0 ºF | - | |
Past weather August 2026 incomplete - Missing data
Geo Sioux City - Iowa
| Country | United States | |
|---|---|---|
| State | Iowa | |
| County | Dakota | |
| City | Sioux City | |
| Zip Code | 68776 | |
| Longitude | -96.47 dec. degr. | |
| Latitude | 42.45 dec. degr. | |
| Altitude - Elevation | 1099ft | |
| ICAO | - | |
| IATA | - |
Date and Time Sioux City - Iowa
| Local Time | 07:50 PM | |
|---|---|---|
| Sunrise | 06:29 AM | |
| Sunset | 08:31 PM | |
| Day/Night | Day | |
| Timezone | Central Daylight Time | |
| Timezone DB | America - Chicago |
Map of Sioux City - Iowa
USGS National Map — Open interactive map
Sioux City weather averages
| Annual high temperature | 60ºF |
| Annual low temperature | 37ºF |
| Average annual precip. | 27.74 inch |
| Av. annual snowfall | 36 inch |
Station Data
Monthly averages Sioux City
Longitude: -96.4725, Latitude: 42.4542
Average weather Sioux City, IA - 68776
Monthly: 1991-2020 normals
History: 2007-2026
Abbreviations
Average precipitation in : Av. precipitation in
Jan: January, Feb: February, ...Jan: January, Feb: February, ...Ja: January, Fe: February, ...