Hot-summer humid continental climate
Climate Sioux City - Iowa
Annual high60ºF
Annual low37ºF
Precipitation27.74 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 31 | 10 | 0.62 | 7 |
| Feb | 35 | 15 | 0.67 | 7 |
| Mar | 47 | 26 | 2.00 | 7 |
| Apr | 62 | 37 | 2.95 | 2 |
| May | 73 | 49 | 3.74 | 0 |
| Jun | 82 | 59 | 3.89 | 0 |
| Jul | 85 | 63 | 3.44 | 0 |
| Aug | 83 | 61 | 3.23 | 0 |
| Sep | 76 | 51 | 2.96 | 0 |
| Oct | 63 | 38 | 2.13 | 1 |
| Nov | 46 | 25 | 1.31 | 4 |
| Dec | 32 | 13 | 0.80 | 8 |
- JanHigh 31ºFLow 10ºFPrecip 0.62 inch
- FebHigh 35ºFLow 15ºFPrecip 0.67 inch
- MarHigh 47ºFLow 26ºFPrecip 2.00 inch
- AprHigh 62ºFLow 37ºFPrecip 2.95 inch
- MayHigh 73ºFLow 49ºFPrecip 3.74 inch
- JunHigh 82ºFLow 59ºFPrecip 3.89 inch
- JulHigh 85ºFLow 63ºFPrecip 3.44 inch
- AugHigh 83ºFLow 61ºFPrecip 3.23 inch
- SepHigh 76ºFLow 51ºFPrecip 2.96 inch
- OctHigh 63ºFLow 38ºFPrecip 2.13 inch
- NovHigh 46ºFLow 25ºFPrecip 1.31 inch
- DecHigh 32ºFLow 13ºFPrecip 0.80 inch
Climate summary
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 weather averages
Annual high60ºF
Annual low37ºF
Precipitation27.74 inch
Snowfall36 inch
Daily normals Sioux City - Iowa - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 29.5 | 11.3 | 0.02 | 0.02 | 0.20 | 0.20 |
| Jan 2 | 29.4 | 11.2 | 0.05 | 0.05 | 0.50 | 0.50 |
| Jan 3 | 29.3 | 11.0 | 0.07 | 0.07 | 0.70 | 0.70 |
| Jan 4 | 29.2 | 10.9 | 0.10 | 0.10 | 0.90 | 0.90 |
| Jan 5 | 29.2 | 10.8 | 0.12 | 0.12 | 1.10 | 1.10 |
| Jan 6 | 29.1 | 10.7 | 0.15 | 0.15 | 1.40 | 1.40 |
| Jan 7 | 29.1 | 10.6 | 0.17 | 0.17 | 1.60 | 1.60 |
| Jan 8 | 29.1 | 10.5 | 0.20 | 0.20 | 1.90 | 1.90 |
| Jan 9 | 29.1 | 10.4 | 0.22 | 0.22 | 2.10 | 2.10 |
| Jan 10 | 29.1 | 10.3 | 0.25 | 0.25 | 2.40 | 2.40 |
| Jan 11 | 29.1 | 10.2 | 0.27 | 0.27 | 2.60 | 2.60 |
| Jan 12 | 29.1 | 10.2 | 0.29 | 0.29 | 2.90 | 2.90 |
| Jan 13 | 29.1 | 10.1 | 0.31 | 0.31 | 3.10 | 3.10 |
| Jan 14 | 29.1 | 10.1 | 0.33 | 0.33 | 3.30 | 3.30 |
| Jan 15 | 29.2 | 10.0 | 0.35 | 0.35 | 3.60 | 3.60 |
| Jan 16 | 29.2 | 10.0 | 0.37 | 0.37 | 3.80 | 3.80 |
| Jan 17 | 29.3 | 10.0 | 0.39 | 0.39 | 4.10 | 4.10 |
| Jan 18 | 29.3 | 10.0 | 0.41 | 0.41 | 4.30 | 4.30 |
| Jan 19 | 29.4 | 10.0 | 0.43 | 0.43 | 4.60 | 4.60 |
| Jan 20 | 29.5 | 10.0 | 0.45 | 0.45 | 4.80 | 4.80 |
| Jan 21 | 29.5 | 10.0 | 0.47 | 0.47 | 5.10 | 5.10 |
| Jan 22 | 29.6 | 10.1 | 0.50 | 0.50 | 5.30 | 5.30 |
| Jan 23 | 29.7 | 10.1 | 0.52 | 0.52 | 5.60 | 5.60 |
| Jan 24 | 29.8 | 10.2 | 0.54 | 0.54 | 5.90 | 5.90 |
| Jan 25 | 29.9 | 10.2 | 0.56 | 0.56 | 6.10 | 6.10 |
| Jan 26 | 30.0 | 10.3 | 0.58 | 0.58 | 6.40 | 6.40 |
| Jan 27 | 30.1 | 10.4 | 0.60 | 0.60 | 6.60 | 6.60 |
| Jan 28 | 30.2 | 10.5 | 0.62 | 0.62 | 6.90 | 6.90 |
| Jan 29 | 30.3 | 10.7 | 0.64 | 0.64 | 7.20 | 7.20 |
| Jan 30 | 30.5 | 10.8 | 0.67 | 0.67 | 7.40 | 7.40 |
| Jan 31 | 30.6 | 10.9 | 0.69 | 0.69 | 7.70 | 7.70 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Sioux City - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | 69.1 | 48.9 | 0.01 |
| Oct 2 | 70.0 | 41.0 | 0.00 |
| Oct 3 | 80.1 | 45.0 | 0.00 |
| Oct 4 | – | – | – |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | 79.0 | 46.9 | 0.00 |
| Oct 8 | 82.0 | 42.1 | 0.00 |
| Oct 9 | 86.0 | 55.9 | 0.00 |
| Oct 10 | 93.0 | 64.9 | 0.00 |
| Oct 11 | 91.0 | 57.0 | 0.00 |
| Oct 12 | 87.1 | 51.1 | 0.00 |
| Oct 13 | 63.0 | 46.0 | 0.00 |
| Oct 14 | 57.9 | 39.0 | 0.08 |
| Oct 15 | 54.0 | 48.0 | 0.41 |
| Oct 16 | 55.0 | 32.0 | T |
| Oct 17 | – | – | – |
| Oct 18 | 73.0 | 42.1 | 0.00 |
| Oct 19 | – | – | – |
| Oct 20 | – | – | – |
| Oct 21 | 81.0 | 45.0 | 0.00 |
| Oct 22 | 81.0 | 48.9 | 0.00 |
| Oct 23 | 79.0 | 60.1 | T |
| Oct 24 | 73.0 | 52.0 | 0.00 |
| Oct 25 | 63.0 | 46.9 | 0.03 |
| Oct 26 | 51.1 | 44.1 | 0.76 |
| Oct 27 | 55.9 | 46.0 | 0.00 |
| Oct 28 | 71.1 | 50.0 | 0.00 |
| Oct 29 | – | – | – |
| Oct 30 | – | – | – |
| Oct 31 | – | – | – |
The data for October 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature93.0ºF · Oct 10
- Lowest max temperature51.1ºF · Oct 26
- Highest min temperature64.9ºF · Oct 10
- Lowest min temperature32.0ºF · Oct 16
Geo Sioux City - Iowa
Location
- Country
- United States
- State
- Iowa
- County
- Dakota
- City
- Sioux City
- Zip Code
- 68776
- Elevation
- 1099 ft
- Longitude
- -96.47
- Latitude
- 42.45
- ICAO
- –
- IATA
- –