Gladbrook, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gladbrook, a city in Tama County, Iowa.
Overnight
66°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 4am, then patchy fog and showers and thunderstorms likely. Cloudy. Low around 66, with temperatures rising to around 68 overnight. Southeast wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Gladbrook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 66°F | Showers And Thunderstorms Likely | 8 mph SE | 67% |
| Saturday | 79°F | Showers And Thunderstorms Likely | 8 mph SW | 62% |
| Saturday Night | 60°F | Chance Showers And Thunderstorms | 10 mph N | 37% |
| Sunday | 66°F | Chance Rain Showers | 10 to 15 mph NE | 58% |
| Sunday Night | 54°F | Chance Rain Showers | 13 mph ENE | 38% |
| Monday | 62°F | Chance Rain Showers | 13 mph NE | 58% |
| Monday Night | 49°F | Chance Rain Showers | 8 to 12 mph NE | 58% |
| Tuesday | 60°F | Slight Chance Rain Showers then Partly Sunny | 9 mph ENE | 27% |
| Tuesday Night | 45°F | Partly Cloudy | 3 to 7 mph ENE | 4% |
| Wednesday | 65°F | Sunny | 5 mph ENE | 0% |
| Wednesday Night | 50°F | Partly Cloudy | 3 mph E | 3% |
| Thursday | 66°F | Partly Sunny | 3 mph E | 12% |
| Thursday Night | 53°F | Partly Cloudy | 2 mph E | 9% |
| Friday | 68°F | Partly Sunny | 5 mph E | 6% |
Forecast source: National Weather Service (api.weather.gov) for Gladbrook (42.186, -92.715). Updated through the day.
Growing snapshot for Gladbrook
Last spring frost
Apr 29
First fall frost
Oct 9
Growing season
160 days
Hardiness zone
5a
More local growing data for Gladbrook: nearby ZIP 50635 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Grundy Ctr, Ia (11.7 mi from Gladbrook). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.