Grundy Center, IA Weather & Growing Conditions
Today
51°F
Chance Rain Showers
A chance of rain showers before 5pm. Cloudy. High near 51, with temperatures falling to around 49 in the afternoon. West wind 13 to 18 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 51°F | Chance Rain Showers | 13 to 18 mph W | 30% |
| Tonight | 43°F | Chance Rain Showers | 15 mph W | 35% |
| Thursday | 52°F | Chance Rain Showers | 14 mph NW | 46% |
| Thursday Night | 36°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 12 mph N | 19% |
| Friday | 48°F | Mostly Sunny | 3 to 8 mph N | 3% |
| Friday Night | 28°F | Partly Cloudy | 2 mph NNW | 0% |
| Saturday | 51°F | Mostly Sunny | 0 to 5 mph W | 0% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 1% |
| Sunday | 57°F | Sunny | 7 mph W | 2% |
| Sunday Night | 35°F | Clear | 5 mph SW | 0% |
| Monday | 62°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 6 mph WNW | 0% |
| Tuesday | 61°F | Sunny | 3 mph NW | 0% |
| Tuesday Night | 40°F | Partly Cloudy | 2 mph ENE | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Grundy Center, IA
Last spring frost
Apr 29
First fall frost
Oct 9
Growing season
160 days
Hardiness zone
5a
Explore more for Grundy Center, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Grundy Ctr, Ia (1.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.