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Weather in Ossian, IA · National Weather Service + NOAA

Ossian is snow country

Ossian has cold, snowy winters and pleasant summers. A typical July afternoon reaches 81°, a January night drops to 8°, and about 40 inches of snow falls in a normal winter. A typical November afternoon reaches 43°, and nights fall to 26°.

Winter 28°/12°Spring 56°/35°Summer 79°/59°Fall 58°/38°
Right now
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Sunrise 7:44 am · sunset 5:56 pm

Getting the latest forecast from the National Weather Service…

What stands out about Ossian’s weather

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

Climate →
Snow countryAbout 40 inches a winter, more than 929 of 1,020 Iowa towns.Cool summersJuly afternoons average 81°, cooler than 1,014 of 1,026 Iowa towns.A short growing season153 frost-free days, from May 1 to Oct 3.Wetter than most of Iowa39 inches of rain and melted snow a year, more than 1,003 of 1,026 Iowa towns.
A normal year

Where today sits in Ossian’s year

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

Full climate →
Winter
28° / 12°
13 days with an inch or more of snow
Spring
56° / 35°
Last frost around May 1
Summer
79° / 59°
9 days reach 90° in a normal year
Fall now
58° / 38°
First frost around Oct 3
Pastthe usual first frost (Oct 3). 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 Ossian get?About 40 inches a winter.When is it wettest?June, with 6.1 inches.Is it warmer than it used to be?+1.1° vs. the 20th century.

Weather talk

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

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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 Ossian itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Postville, IA (11 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.