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Weather in Sully Township, SD · National Weather Service + NOAA

Sully Township is snow country

Sully Township has cold, snowy winters and warm summers, with very little rain. A typical July afternoon reaches 88°, a January night drops to 11°, and about 49 inches of snow falls in a normal winter. A typical November afternoon reaches 47°, and nights fall to 24°.

Winter 35°/14°Spring 59°/34°Summer 85°/59°Fall 62°/37°
Right now
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Sunrise 8:15 am · sunset 6:28 pm

Getting the latest forecast from the National Weather Service…

What stands out about Sully Township’s weather

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

Climate →
Snow countryAbout 49 inches a winter, more than 1,274 of 1,367 South Dakota towns.Warmer summers than most of South DakotaJuly afternoons average 88°, warmer than 1,301 of 1,384 South Dakota towns.A long growing season159 frost-free days, from May 1 to Oct 9.
A normal year

Where today sits in Sully Township’s year

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

Full climate →
Winter
35° / 14°
15 days with an inch or more of snow
Spring
59° / 34°
Last frost around May 1
Summer
85° / 59°
40 days reach 90° in a normal year
Fall now
62° / 37°
First frost around Oct 9
Pastthe usual first frost (Oct 9). Last frost next spring: May 1
Best months to be outside
MayJunSep
Highs of 62–84° and lows of 40° or more
How much snow does Sully Township get?About 49 inches a winter.When is it wettest?June, with 3.8 inches.Is it warmer than it used to be?+1.3° vs. the 20th century.

Weather talk

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

Town Square →
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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 Sully Township itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Winner, SD (13 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.