Granger, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Granger, a city in Polk County, Iowa.
Today
82°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 7am. Mostly cloudy. High near 82, with temperatures falling to around 79 in the afternoon. West northwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Granger
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Chance Showers And Thunderstorms | 5 to 10 mph WNW | 33% |
| Tonight | 62°F | Showers And Thunderstorms | 5 to 12 mph NNE | 90% |
| Wednesday | 73°F | Chance Showers And Thunderstorms | 3 to 7 mph NE | 54% |
| Wednesday Night | 57°F | Slight Chance Rain Showers | 1 to 5 mph NE | 22% |
| Thursday | 80°F | Sunny | 1 to 5 mph ENE | 2% |
| Thursday Night | 61°F | Mostly Clear | 3 mph SSE | 3% |
| Friday | 85°F | Sunny | 2 to 8 mph S | 5% |
| Friday Night | 67°F | Mostly Clear | 3 to 7 mph S | 12% |
| Saturday | 89°F | Sunny | 3 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) for Granger (41.762, -93.824). Updated through the day.
Growing snapshot for Granger
Last spring frost
Apr 19
First fall frost
Oct 18
Growing season
179 days
Hardiness zone
5b
More local growing data for Granger: nearby ZIP 50109 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Alleman
Altoona
Ankeny
Bondurant
Clive
Des Moines
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Grimes
Johnston
Maxwell
Mitchellville
Pleasant Hill
Polk City
Runnells
Saylorville
Sheldahl
Slater
Urbandale
West Des Moines
Windsor Heights
Climate data from the nearest NOAA station, Des Moines Wsfo-Johnston, Ia (4.6 mi from Granger). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.