Gladbrook, IA Weather & Growing Conditions
Overnight
46°F
Slight Chance Rain Showers
A slight chance of rain showers. Cloudy. Low around 46, with temperatures rising to around 50 overnight. West wind around 13 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 46°F | Slight Chance Rain Showers | 13 mph W | 22% |
| Wednesday | 53°F | Slight Chance Rain Showers | 13 to 18 mph W | 24% |
| Wednesday Night | 42°F | Chance Rain Showers | 14 mph W | 28% |
| Thursday | 52°F | Rain Showers Likely | 10 to 14 mph NW | 65% |
| Thursday Night | 38°F | Slight Chance Rain Showers then Mostly Cloudy | 10 mph N | 15% |
| Friday | 50°F | Partly Sunny | 5 to 9 mph N | 2% |
| Friday Night | 31°F | Partly Cloudy | 0 to 3 mph NNW | 1% |
| Saturday | 54°F | Mostly Sunny | 1 to 5 mph WSW | 2% |
| Saturday Night | 35°F | Mostly Clear | 5 mph W | 4% |
| Sunday | 59°F | Sunny | 7 mph WNW | 5% |
| Sunday Night | 37°F | Mostly Clear | 6 mph SW | 2% |
| Monday | 63°F | Sunny | 6 to 12 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 7 mph W | 0% |
| Tuesday | 62°F | Mostly Sunny | 6 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Gladbrook, IA
Last spring frost
Apr 29
First fall frost
Oct 9
Growing season
160 days
Hardiness zone
5a
Explore more for Gladbrook, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Grundy Ctr, Ia (11.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.