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Weather in Marietta, WI · National Weather Service + NOAA

Marietta has a long growing season

Marietta has cold, snowy winters and pleasant summers. A typical July afternoon reaches 82°, a January night drops to 10°, and about 36 inches of snow falls in a normal winter. Normal November highs come to 44°, and lows to 28°.

Winter 30°/13°Spring 57°/36°Summer 80°/60°Fall 59°/39°
Right now
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Sunrise 7:40 am · sunset 5:52 pm

Getting the latest forecast from the National Weather Service…

What stands out about Marietta’s weather

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

Climate →
A long growing season179 frost-free days, from Apr 22 to Oct 20.Less snow than most of WisconsinAbout 36 inches a winter, less than 1,888 of 2,046 Wisconsin towns.
A normal year

Where today sits in Marietta’s year

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

Full climate →
Winter
30° / 13°
12 days with an inch or more of snow
Spring
57° / 36°
Last frost around Apr 22
Summer
80° / 60°
10 days reach 90° in a normal year
Fall now
59° / 39°
First frost around Oct 20
Pastthe usual first frost (Oct 20). Last frost next spring: Apr 22
Best months to be outside
MayJunJulAugSep
Highs of 62–84° and lows of 40° or more
How much snow does Marietta get?About 36 inches a winter.When is it wettest?June, with 5.6 inches.Is it warmer than it used to be?+0.9° vs. the 20th century.

Weather talk

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

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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 Marietta itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Steuben 4 Se, WI (3 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.