Harman US

Thor, IA Weather & Growing Conditions

Today
75°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4pm. Mostly cloudy. High near 75, with temperatures falling to around 73 in the afternoon. North northwest wind around 9 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 75°F Chance Showers And Thunderstorms 9 mph NNW 31%
Tonight 59°F Slight Chance Rain Showers 12 mph NNE 18%
Sunday 67°F Chance Drizzle 15 mph NE 28%
Sunday Night 53°F Chance Rain Showers 12 mph ENE 47%
Monday 61°F Chance Rain Showers 12 mph ENE 50%
Monday Night 48°F Chance Rain Showers 6 to 9 mph ENE 40%
Tuesday 61°F Mostly Sunny 7 mph ENE 8%
Tuesday Night 44°F Mostly Clear 2 to 6 mph E 0%
Wednesday 66°F Sunny 5 mph ESE 1%
Wednesday Night 49°F Partly Cloudy 3 mph ESE 11%
Thursday 67°F Slight Chance Rain Showers 2 to 6 mph SE 16%
Thursday Night 53°F Mostly Cloudy 3 mph SE 7%
Friday 70°F Partly Sunny 2 to 7 mph SE 7%
Friday Night 54°F Mostly Cloudy 5 mph SE 11%

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

Growing snapshot for Thor, IA

Last spring frost
Apr 26
First fall frost
Oct 12
Growing season
169 days
Hardiness zone
5a

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

Climate data from the nearest NOAA station, Dakota City, Ia (7.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.