Granger, IA Weather & Growing Conditions
Today
81°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy. High near 81, with temperatures falling to around 79 in the afternoon. West wind 3 to 10 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Chance Showers And Thunderstorms | 3 to 10 mph W | 33% |
| Tonight | 62°F | Showers And Thunderstorms | 6 to 10 mph N | 91% |
| Wednesday | 72°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 7 mph NE | 56% |
| Wednesday Night | 57°F | Slight Chance Rain Showers | 1 to 6 mph NE | 22% |
| Thursday | 80°F | Sunny | 1 to 5 mph ENE | 2% |
| Thursday Night | 61°F | Mostly Clear | 5 mph SSE | 3% |
| Friday | 84°F | Sunny | 2 to 8 mph S | 5% |
| Friday Night | 66°F | Mostly Clear | 3 to 7 mph S | 12% |
| Saturday | 88°F | Sunny | 2 to 10 mph S | 12% |
| Saturday Night | 72°F | Mostly Clear | 12 mph SSW | 12% |
| Sunday | 89°F | Sunny | 8 to 12 mph S | 12% |
| Sunday Night | 71°F | Slight Chance Showers And Thunderstorms | 10 mph SSE | 28% |
| Monday | 89°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 9 to 14 mph S | 28% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms | 9 to 14 mph ESE | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Granger, IA
Last spring frost
Apr 19
First fall frost
Oct 18
Growing season
179 days
Hardiness zone
5b
Explore more for Granger, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Des Moines Wsfo-Johnston, Ia (4.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.