Sioux Falls, SD All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in Sioux Falls, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 109.9°F (43°C) | July 17, 1936 and June 21, 1988 |
| Record Low | -36°F (-38°C) | January 19, 1970 |
| Lowest High | -16.9°F (-27°C) | February 8, 1933 |
| Highest Low | 80.9°F (27°C) | July 12, 1936 and August 14, 1938 and August 22, 2023 |
| Highest Mean | 94.0°F (34°C) | July 17, 1936 and June 21, 1988 |
| Lowest Mean | -22.4°F (-30°C) | February 8, 1933 |
| Precipitation | ||
| Max in One Calendar Day | 5.44" (138.2 mm) | August 7, 2022 |
| Max in One Month | 13.70" (348.0 mm) | June 2014 |
| Least in One Month | 0.00" (0.0 mm) | October 1933 |
| Max in One Year | 39.58" (1005.4 mm) | 2019 |
| Least in One Year | 11.44" (290.7 mm) | 1976 |
| Snowfall | ||
| Max in One Calendar Day | 18.1" (46.0 cm) | March 10, 1956 |
| Max in One Month | 48.3" (122.8 cm) | February 1962 |
| Max in One Season | 94.9" (241.0 cm) | 1968-69 |
| Max in One Year | 78.4" (199.1 cm) | 1983 |
| Earliest Snow | 0.2" (0.5 cm) | September 25, 1939 |
| Earliest Measurable Snow | 0.2" (0.5 cm) | September 25, 1939 |
| Latest Snow | 0.1" (0.3 cm) | May 18, 1968 |
| Latest Measurable Snow | 0.1" (0.3 cm) | May 18, 1968 |
| Period of Record | ||
| Temperature | January 1, 1932 – February 6, 2025 | |
| Precipitation | January 1, 1932 – February 6, 2025 | |
| Snowfall | January 1, 1932 – February 6, 2025 | |
Note: Records compiled from NOAA GHCN-Daily observations at SIOUX FALLS (3 mi from Sioux Falls, SD). Quality-flagged readings are excluded. Monthly and annual totals require substantially complete reporting for “least” records.
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Frequently Asked Questions
What is the hottest temperature ever recorded in Sioux Falls, SD?
The all-time record high in Sioux Falls, SD is 109.9°F (43°C), set on July 17, 1936 and June 21, 1988.
What is the coldest temperature ever recorded in Sioux Falls, SD?
The all-time record low in Sioux Falls, SD is -36°F (-38°C), set on January 19, 1970.
What is the most rain Sioux Falls, SD has ever had in one day?
The most precipitation recorded in one calendar day near Sioux Falls, SD is 5.44 inches, on August 7, 2022.
What is the biggest snowfall ever recorded in Sioux Falls, SD?
The most snow recorded in one calendar day near Sioux Falls, SD is 18.1 inches, on March 10, 1956.
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