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Clarion, IA Weather & Growing Conditions

Today
74°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm. Mostly cloudy, with a high near 74. Northwest wind around 9 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 74°F Patchy Fog 9 mph NW 43%
Tonight 58°F Slight Chance Rain Showers 12 mph N 19%
Sunday 66°F Mostly Cloudy then Slight Chance Drizzle 15 mph NE 22%
Sunday Night 52°F Chance Rain Showers 13 mph ENE 35%
Monday 61°F Chance Rain Showers 9 to 14 mph ENE 48%
Monday Night 47°F Chance Rain Showers 6 to 9 mph ENE 42%
Tuesday 61°F Mostly Sunny 8 mph ENE 9%
Tuesday Night 44°F Mostly Clear 2 to 6 mph E 0%
Wednesday 65°F Sunny 5 mph E 1%
Wednesday Night 48°F Partly Cloudy 3 mph ESE 8%
Thursday 66°F Partly Sunny 5 mph SE 14%
Thursday Night 52°F Mostly Cloudy 2 mph SE 6%
Friday 69°F Partly Sunny 2 to 6 mph SE 6%
Friday Night 53°F Mostly Cloudy 5 mph SE 11%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Clarion, IA

Last spring frost
Apr 30
First fall frost
Oct 10
Growing season
162 days
Hardiness zone
5a

Explore more for Clarion, IA: full frost dates · planting calendar · Iowa frost dates

Climate data from the nearest NOAA station, Clarion, Ia (1.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.