Sioux County weather, town by town
5 places in Sioux County, North Dakota, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 1908 to 2026. Station extremes, not official state records.
Sioux County Weather Facts
Sioux County has 5 places on myweatherrock (3 cities, 2 census-designated places), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 118°F at Pollock on July 20, 1934. The coldest night is -51°F at Pollock on February 16, 1936. The wettest day brought 5.65 inches of rain at Shields on October 5, 2013. The biggest single-day snow measured 18.5 inches at Shields on December 26, 2009. Those are station measurements from NOAA's daily records, 1908 to 2026, not official state records. By area the largest place is Cannon Ball, about 88 square miles.
About Sioux County weather
The map on the Now tab shows every Sioux County town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 4 Sioux County towns with station normals, the warmest month is July, when the day usually reaches 83°F, and the coldest is January, when the night usually falls to 3°F. June is the wettest, with rain on about 10 days. July afternoons run from about 81°F in Cannon Ball to 86°F in Selfridge.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
Sioux County weather records
Measured at the NOAA stations serving these towns, daily records 1908 to 2026. Station extremes, not official state records.
Common questions about Sioux County weather
- What is the hottest temperature recorded at a Sioux County station?
- 118°F at Pollock on July 20, 1934, in the NOAA daily station records myweatherrock holds (1908 to 2026).
- What is the coldest temperature recorded at a Sioux County station?
- -51°F at Pollock on February 16, 1936.
- What is the most rain a Sioux County station has measured in one day?
- 5.65 inches at Shields on October 5, 2013.
- What is the biggest one-day snowfall at a Sioux County station?
- 18.5 inches at Shields on December 26, 2009.
- How many Sioux County towns have a weather page here?
- 5: 3 cities, 2 census-designated places. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the Sioux County forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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