Harman US

Thor, IA Weather & Growing Conditions

This Afternoon
69°F
Mostly Cloudy
Mostly cloudy. High near 69, with temperatures falling to around 65 in the afternoon. North wind around 9 mph. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 69°F Mostly Cloudy 9 mph N 14%
Tonight 58°F Cloudy then Slight Chance Drizzle 9 to 13 mph N 18%
Sunday 67°F Chance Drizzle 15 mph NE 29%
Sunday Night 52°F Chance Rain Showers 13 mph ENE 52%
Monday 58°F Rain Showers Likely 13 mph NE 71%
Monday Night 48°F Rain Showers Likely 6 to 9 mph NE 70%
Tuesday 61°F Partly Sunny 8 mph ENE 9%
Tuesday Night 45°F Partly Cloudy 2 to 6 mph E 1%
Wednesday 66°F Mostly Sunny 5 mph E 1%
Wednesday Night 50°F Partly Cloudy 3 mph SE 10%
Thursday 68°F Chance Rain Showers 3 to 7 mph SE 32%
Thursday Night 55°F Slight Chance Rain Showers 3 mph SE 21%
Friday 71°F Slight Chance Rain Showers 2 to 6 mph ESE 18%
Friday Night 57°F Mostly Cloudy 5 mph ESE 12%

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 20, 2026.