Climate averages 1991–2020
Sioux City weather
in October.
A mild, moderately wet month: the 6th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Sioux City: daytime highs average 16.1°C and nights cool to about 6.5°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 61 mm of rain on roughly 7 days, which makes October a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 06 min on an average October day.
The nearest other city in this atlas is Sioux Falls (119 km away). In October its highs average 14.7°C, 1.4°C cooler than Sioux City, with 61 mm of rain.
Among the 498 cities listed in the United States, Sioux City ranks joint 407th of 498 for the warmest October highs and joint 182nd of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; Sioux City is 5.2°C cooler than that mean.
From October to November, average highs fall by 8.5°C to 7.6°C, and monthly rainfall falls from 61 mm to 40 mm.
The annual picture
October in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sioux City climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -1.9°C-11.2°C | -11.2°C | 23 | 4.7 | 9.49 h |
| February | 1.1°C-9.0°C | -9.0°C | 27 | 5.1 | 10.511 h |
| March | 8.2°C-2.7°C | -2.7°C | 55 | 7.0 | 11.912 h |
| April | 15.0°C3.9°C | 3.9°C | 101 | 10.6 | 13.313 h |
| May | 21.0°C10.6°C | 10.6°C | 126 | 12.6 | 14.615 h |
| June | 26.3°C16.5°C | 16.5°C | 123 | 11.8 | 15.215 h |
| July | 28.7°C19.3°C | 19.3°C | 75 | 8.8 | 15.015 h |
| August | 27.5°C18.1°C | 18.1°C | 98 | 9.4 | 13.914 h |
| September | 23.8°C13.8°C | 13.8°C | 75 | 7.6 | 12.513 h |
| October, selected | 16.1°C6.5°C | 6.5°C | 61 | 7.3 | 11.111 h |
| November | 7.6°C-1.3°C | -1.3°C | 40 | 5.4 | 9.810 h |
| December | 0.3°C-8.0°C | -8.0°C | 30 | 5.2 | 9.19 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Sioux Falls in OctoberUnited States · 119 kmHigh 14.7°C · Low 5.3°C · 61 mm rain
- Omaha in OctoberUnited States · 143 kmHigh 17.4°C · Low 7.8°C · 68 mm rain
- Lincoln in OctoberUnited States · 190 kmHigh 18.1°C · Low 8.1°C · 64 mm rain
- Des Moines in OctoberUnited States · 251 kmHigh 16.6°C · Low 7.5°C · 71 mm rain
- Saint Joseph in OctoberUnited States · 330 kmHigh 18.3°C · Low 9.1°C · 81 mm rain
- Rochester (Minnesota), United States in OctoberUnited States · 360 kmHigh 13.7°C · Low 5.8°C · 68 mm rain
- Bloomington (Minnesota), United States in OctoberUnited States · 360 kmHigh 13.8°C · Low 6.4°C · 64 mm rain
- Plymouth, United States in OctoberUnited States · 366 kmHigh 13.4°C · Low 5.9°C · 66 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sioux City) is explained once on the Sioux City year overview and on the Sources, method and limits page.