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Thompson, IA Weather & Growing Conditions

Today
65°F
Patchy Fog
Patchy fog and a slight chance of rain showers before 5pm. Cloudy, with a high near 65. North northeast wind 6 to 9 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 65°F Patchy Fog 6 to 9 mph NNE 21%
Tonight 56°F Cloudy 12 mph NNE 12%
Sunday 66°F Mostly Cloudy 12 to 15 mph NE 9%
Sunday Night 50°F Mostly Cloudy then Chance Rain Showers 8 to 12 mph ENE 26%
Monday 61°F Chance Rain Showers 10 mph ENE 27%
Monday Night 45°F Slight Chance Rain Showers then Mostly Cloudy 5 to 8 mph ENE 22%
Tuesday 62°F Mostly Sunny 5 to 8 mph E 5%
Tuesday Night 42°F Mostly Clear 2 to 6 mph ESE 1%
Wednesday 65°F Sunny 6 mph ESE 2%
Wednesday Night 47°F Partly Cloudy then Slight Chance Rain Showers 3 mph SE 15%
Thursday 66°F Slight Chance Rain Showers then Partly Sunny 2 to 6 mph SE 15%
Thursday Night 51°F Partly Cloudy 3 mph SE 5%
Friday 69°F Mostly Sunny 2 to 7 mph SE 5%
Friday Night 52°F Partly Cloudy 6 mph SE 12%

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

Growing snapshot for Thompson, IA

Last spring frost
Apr 30
First fall frost
Oct 7
Growing season
159 days
Hardiness zone
5a

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

Climate data from the nearest NOAA station, Forest City 2 Nne, Ia (11.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.