Shell Rock, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Shell Rock, a city in Butler County, Iowa.
Today
49°F
Slight Chance Rain Showers
A slight chance of rain showers. Cloudy, with a high near 49. West southwest wind around 17 mph, with gusts as high as 23 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Shell Rock
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 49°F | Slight Chance Rain Showers | 17 mph WSW | 21% |
| Tonight | 42°F | Chance Rain Showers | 15 mph W | 47% |
| Thursday | 50°F | Chance Rain Showers then Cloudy | 14 to 17 mph NW | 25% |
| Thursday Night | 35°F | Mostly Cloudy | 7 to 13 mph N | 3% |
| Friday | 46°F | Sunny | 5 to 8 mph N | 0% |
| Friday Night | 27°F | Mostly Clear | 0 to 3 mph N | 0% |
| Saturday | 51°F | Mostly Sunny | 0 to 6 mph WSW | 0% |
| Saturday Night | 33°F | Mostly Clear | 5 mph WSW | 0% |
| Sunday | 57°F | Sunny | 6 mph W | 0% |
| Sunday Night | 35°F | Mostly Clear | 5 mph SW | 0% |
| Monday | 63°F | Sunny | 5 to 12 mph SW | 0% |
| Monday Night | 39°F | Mostly Clear | 2 to 7 mph W | 0% |
| Tuesday | 60°F | Sunny | 5 mph NW | 1% |
| Tuesday Night | 38°F | Partly Cloudy | 3 mph NNW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Shell Rock (42.712, -92.582). Updated through the day.
Growing snapshot for Shell Rock
Last spring frost
Apr 27
First fall frost
Oct 8
Growing season
165 days
Hardiness zone
5a
More local growing data for Shell Rock: nearby ZIP 50670 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Allison, Ia (10.8 mi from Shell Rock). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.