Climate averages 1991–2020
Sioux Falls weather
in January.
A freezing month with light precipitation: the coolest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a freezing month in Sioux Falls: daytime highs average -3.5°C and nights cool to about -12.8°C. By daytime temperature it is the coolest month of the year.
Expect about 20 mm of precipitation on roughly 5 days, which makes January a month with light precipitation (the driest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 21 min on an average January day.
The nearest other city in this atlas is Sioux City (119 km away). In January its highs average -1.9°C, 1.7°C warmer than Sioux Falls, with 23 mm of precipitation.
Among the 498 cities listed in the United States, Sioux Falls ranks 486th of 498 for the warmest January highs and joint 18th of 498 for the driest January (precipitation, lowest first). The mean January high of those 498 cities is 9.5°C; Sioux Falls is 13.0°C cooler than that mean.
From January to February, average highs rise by 3.0°C to -0.5°C, and monthly precipitation rises from 20 mm to 24 mm.
The annual picture
January 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 Falls climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | -3.5°C-12.8°C | -12.8°C | 20 | 4.7 | 9.39 h |
| February | -0.5°C-10.4°C | -10.4°C | 24 | 4.9 | 10.510 h |
| March | 6.6°C-4.2°C | -4.2°C | 46 | 6.6 | 11.912 h |
| April | 13.6°C2.6°C | 2.6°C | 91 | 10.3 | 13.413 h |
| May | 19.9°C9.5°C | 9.5°C | 114 | 12.5 | 14.715 h |
| June | 25.2°C15.4°C | 15.4°C | 130 | 12.5 | 15.415 h |
| July | 27.7°C18.2°C | 18.2°C | 84 | 8.9 | 15.115 h |
| August | 26.6°C17.1°C | 17.1°C | 85 | 8.8 | 14.014 h |
| September | 22.6°C12.8°C | 12.8°C | 80 | 7.9 | 12.613 h |
| October | 14.7°C5.3°C | 5.3°C | 61 | 7.0 | 11.111 h |
| November | 6.0°C-2.7°C | -2.7°C | 40 | 5.5 | 9.710 h |
| December | -1.3°C-9.5°C | -9.5°C | 27 | 5.0 | 9.09 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
January in nearby cities
- Sioux City in JanuaryUnited States · 119 kmHigh -1.9°C · Low -11.2°C · 23 mm precipitation
- Omaha in JanuaryUnited States · 262 kmHigh 0.0°C · Low -9.2°C · 26 mm precipitation
- Lincoln in JanuaryUnited States · 305 kmHigh 1.2°C · Low -8.2°C · 25 mm precipitation
- Plymouth, United States in JanuaryUnited States · 307 kmHigh -5.5°C · Low -13.6°C · 24 mm precipitation
- Bloomington (Minnesota), United States in JanuaryUnited States · 309 kmHigh -5.1°C · Low -13.3°C · 26 mm precipitation
- Minneapolis in JanuaryUnited States · 319 kmHigh -5.3°C · Low -13.7°C · 24 mm precipitation
- Brooklyn Park in JanuaryUnited States · 319 kmHigh -5.4°C · Low -13.9°C · 24 mm precipitation
- Saint Paul in JanuaryUnited States · 329 kmHigh -5.1°C · Low -13.5°C · 25 mm precipitation
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 Falls) is explained once on the Sioux Falls year overview and on the Sources, method and limits page.