Griswold, IA Weather & Growing Conditions
This Afternoon
61°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. High near 61, with temperatures falling to around 55 in the afternoon. North northwest wind around 18 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 61°F | Showers And Thunderstorms | 18 mph NNW | 88% |
| Tonight | 43°F | Rain Showers Likely | 14 to 20 mph NW | 69% |
| Wednesday | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 14 to 17 mph WNW | 16% |
| Wednesday Night | 40°F | Mostly Cloudy then Slight Chance Rain Showers | 12 mph WNW | 20% |
| Thursday | 52°F | Chance Rain Showers | 13 mph NW | 49% |
| Thursday Night | 38°F | Mostly Cloudy | 6 to 9 mph NNW | 6% |
| Friday | 52°F | Partly Sunny | 2 to 6 mph N | 2% |
| Friday Night | 34°F | Mostly Cloudy | 1 mph ESE | 0% |
| Saturday | 57°F | Mostly Sunny | 1 to 6 mph SW | 2% |
| Saturday Night | 37°F | Mostly Clear | 3 mph W | 4% |
| Sunday | 61°F | Sunny | 3 to 7 mph WSW | 5% |
| Sunday Night | 40°F | Mostly Clear | 7 mph SSW | 0% |
| Monday | 65°F | Sunny | 7 to 12 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 6 mph NW | 0% |
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 Nov 4, 2026.