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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.