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
52°F
Chance Rain Showers
A chance of rain showers. Cloudy. High near 52, with temperatures falling to around 50 in the afternoon. West wind 9 to 18 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Shell Rock
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 52°F | Chance Rain Showers | 9 to 18 mph W | 25% |
| Tonight | 44°F | Rain Showers Likely | 13 to 16 mph W | 55% |
| Thursday | 52°F | Chance Rain Showers | 15 mph NW | 38% |
| Thursday Night | 37°F | Mostly Cloudy | 7 to 13 mph N | 11% |
| Friday | 47°F | Mostly Sunny | 5 to 9 mph N | 3% |
| Friday Night | 28°F | Partly Cloudy | 0 to 3 mph N | 0% |
| Saturday | 51°F | Mostly Sunny | 0 to 6 mph W | 0% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 2% |
| Sunday | 56°F | Sunny | 5 to 8 mph W | 3% |
| Sunday Night | 35°F | Clear | 5 mph SW | 0% |
| Monday | 62°F | Sunny | 5 to 12 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 3 to 7 mph W | 0% |
| Tuesday | 60°F | Sunny | 5 mph NW | 0% |
| Tuesday Night | 40°F | Partly Cloudy | 3 mph NNE | 1% |
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.