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Weather in Marathon, IA · National Weather Service + NOAA

Weather in Marathon

Marathon has cold, snowy winters and pleasant summers. A typical July afternoon reaches 83°, a January night drops to 8°, and about 35 inches of snow falls in a normal winter. A typical November afternoon reaches 44°, and nights fall to 25°.

Winter 29°/12°Spring 57°/36°Summer 81°/60°Fall 60°/38°
Right now
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Sunrise 7:55 am · sunset 6:11 pm

Getting the latest forecast from the National Weather Service…

A normal year

Where today sits in Marathon’s year

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

Full climate →
Winter
29° / 12°
12 days with an inch or more of snow
Spring
57° / 36°
Last frost around Apr 30
Summer
81° / 60°
11 days reach 90° in a normal year
Fall now
60° / 38°
First frost around Oct 5
Pastthe usual first frost (Oct 5). Last frost next spring: Apr 30
Best months to be outside
MayJunJulAugSep
Highs of 62–84° and lows of 40° or more
How much snow does Marathon get?About 35 inches a winter.When is it wettest?June, with 5.1 inches.Is it warmer than it used to be?+0.8° vs. the 20th century.

Weather talk

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

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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 Marathon itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Sioux Rapids 4 E, IA (5 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.