Griswold, IA Weather & Growing Conditions
Today
82°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Partly sunny. High near 82, with temperatures falling to around 80 in the afternoon. North northeast wind 7 to 10 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Partly Sunny then Chance Showers And Thunderstorms | 7 to 10 mph NNE | 43% |
| Tonight | 62°F | Showers And Thunderstorms | 7 to 12 mph NNE | 82% |
| Wednesday | 73°F | Chance Showers And Thunderstorms | 10 mph NE | 52% |
| Wednesday Night | 57°F | Partly Cloudy | 2 to 8 mph ENE | 14% |
| Thursday | 81°F | Sunny | 5 mph E | 4% |
| Thursday Night | 62°F | Mostly Clear | 3 mph SE | 6% |
| Friday | 85°F | Sunny | 5 to 9 mph S | 6% |
| Friday Night | 67°F | Mostly Clear | 7 mph S | 7% |
| Saturday | 89°F | Sunny | 5 to 13 mph S | 2% |
| Saturday Night | 73°F | Mostly Clear | 13 mph S | 9% |
| Sunday | 90°F | Mostly Sunny | 10 to 14 mph S | 9% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms | 15 mph SSE | 22% |
| Monday | 91°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 13 to 16 mph S | 18% |
| Monday Night | 73°F | Chance Showers And Thunderstorms | 10 to 16 mph SE | 25% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Griswold, IA
Last spring frost
Apr 23
First fall frost
Oct 14
Growing season
174 days
Hardiness zone
5b
Explore more for Griswold, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Oakland, Ia (14.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.