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. Cloudy. Low around 66, with temperatures rising to around 68 overnight. East southeast wind around 5 mph. Chance of precipitation is 60%. 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 | 5 mph ESE | 57% |
| Saturday | 79°F | Showers And Thunderstorms Likely | 5 to 8 mph SW | 67% |
| Saturday Night | 60°F | Chance Showers And Thunderstorms | 10 mph N | 37% |
| Sunday | 66°F | Chance Rain Showers then Chance Drizzle | 10 to 15 mph NE | 37% |
| Sunday Night | 54°F | Chance Rain Showers | 13 mph ENE | 44% |
| Monday | 62°F | Chance Rain Showers | 13 mph NE | 44% |
| Monday Night | 49°F | Chance Rain Showers | 8 to 12 mph NE | 42% |
| Tuesday | 60°F | Slight Chance Rain Showers then Partly Sunny | 9 mph ENE | 21% |
| Tuesday Night | 45°F | Partly Cloudy | 3 to 7 mph ENE | 3% |
| Wednesday | 65°F | Sunny | 5 mph ENE | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 3 mph E | 4% |
| Thursday | 66°F | Partly Sunny | 3 mph E | 11% |
| Thursday Night | 53°F | Partly Cloudy | 2 mph E | 9% |
| Friday | 68°F | Partly Sunny | 5 mph E | 5% |
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.