Gladbrook, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gladbrook, a city in Tama County, Iowa.
Today
81°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. High near 81, with temperatures falling to around 77 in the afternoon. West northwest wind 6 to 9 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Gladbrook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Chance Showers And Thunderstorms | 6 to 9 mph WNW | 37% |
| Tonight | 60°F | Showers And Thunderstorms | 6 to 9 mph N | 76% |
| Wednesday | 74°F | Chance Showers And Thunderstorms | 6 mph NNE | 53% |
| Wednesday Night | 55°F | Chance Rain Showers | 3 mph NNE | 25% |
| Thursday | 79°F | Sunny | 2 mph ENE | 2% |
| Thursday Night | 59°F | Mostly Clear | 2 mph SE | 0% |
| Friday | 82°F | Sunny | 2 to 8 mph SSE | 7% |
| Friday Night | 64°F | Mostly Clear | 7 mph S | 12% |
| Saturday | 86°F | Sunny | 5 to 8 mph S | 10% |
| Saturday Night | 70°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 8 to 12 mph SSW | 16% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph S | 16% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms | 9 mph SSE | 34% |
| Monday | 86°F | Chance Showers And Thunderstorms | 10 mph S | 34% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 12 mph E | 32% |
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 Aug 4, 2026.