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Weather in Harrisburg, SD · National Weather Service + NOAA

Harrisburg has the mildest winters around

Harrisburg has cold, snowy winters and pleasant summers. A typical July afternoon reaches 84°, a January night drops to 8°, and about 49 inches of snow falls in a normal winter. In November, a normal day reaches 44° and a normal night drops to 24°.

Winter 29°/11°Spring 57°/35°Summer 82°/60°Fall 59°/38°
Right now
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Sunrise 8:05 am · sunset 6:15 pm

Getting the latest forecast from the National Weather Service…

What stands out about Harrisburg’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
The mildest winters aroundMilder January nights than all 4 towns around it.Wetter than most of South Dakota29 inches of rain and melted snow a year, more than 1,369 of 1,384 South Dakota towns.
A normal year

Where today sits in Harrisburg’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
29° / 11°
14 days with an inch or more of snow
Spring
57° / 35°
Last frost around May 1
Summer
82° / 60°
15 days reach 90° in a normal year
Fall now
59° / 38°
First frost around Oct 6
Pastthe usual first frost (Oct 6). Last frost next spring: May 1
Best months to be outside
MayJunJulAugSep
Highs of 62–84° and lows of 40° or more
How much snow does Harrisburg get?About 49 inches a winter.When is it wettest?June, with 4.7 inches.Is it warmer than it used to be?+1.2° vs. the 20th century.

Weather talk

Road reports, first frosts and storm memories from neighbors in Harrisburg.

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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Harrisburg itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Sioux Falls 3.4 Ese, SD (7 mi, snow) and Sioux Falls, SD (11 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.