Thompson, IA Weather & Growing Conditions
Tonight
43°F
Rain Showers
Rain showers. Cloudy. Low around 43, with temperatures rising to around 47 overnight. Northwest wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 43°F | Rain Showers | 14 mph NW | 92% |
| Wednesday | 49°F | Rain Showers | 16 mph WNW | 75% |
| Wednesday Night | 39°F | Rain Showers Likely | 13 to 16 mph WNW | 70% |
| Thursday | 49°F | Chance Rain Showers | 13 to 16 mph NNW | 39% |
| Thursday Night | 33°F | Mostly Cloudy | 5 to 12 mph N | 11% |
| Friday | 46°F | Partly Sunny | 6 mph NNE | 0% |
| Friday Night | 29°F | Partly Cloudy | 1 mph SE | 0% |
| Saturday | 53°F | Mostly Sunny | 1 to 7 mph SW | 1% |
| Saturday Night | 33°F | Mostly Clear | 5 mph W | 4% |
| Sunday | 57°F | Sunny | 5 to 8 mph W | 6% |
| Sunday Night | 35°F | Mostly Clear | 7 mph SW | 1% |
| Monday | 61°F | Mostly Sunny | 7 to 13 mph WSW | 0% |
| Monday Night | 37°F | Mostly Clear | 7 mph WNW | 1% |
| Tuesday | 57°F | Mostly Sunny | 7 mph WNW | 1% |
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 Nov 4, 2026.