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
76°F
Showers And Thunderstorms
Showers and thunderstorms. Partly sunny. High near 76, with temperatures falling to around 74 in the afternoon. Northwest wind around 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Shell Rock
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Showers And Thunderstorms | 9 mph NW | 84% |
| Tonight | 60°F | Showers And Thunderstorms Likely | 3 to 8 mph N | 59% |
| Wednesday | 73°F | Chance Showers And Thunderstorms then Partly Sunny | 5 mph NNE | 25% |
| Wednesday Night | 54°F | Mostly Clear | 3 mph NNW | 8% |
| Thursday | 78°F | Sunny | 3 mph E | 1% |
| Thursday Night | 59°F | Mostly Clear | 3 mph SSE | 0% |
| Friday | 81°F | Sunny | 2 to 10 mph S | 8% |
| Friday Night | 64°F | Mostly Clear | 8 mph S | 11% |
| Saturday | 84°F | Sunny | 5 to 10 mph S | 9% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 9 to 13 mph S | 29% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 12 mph ESE | 29% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms | 6 to 9 mph SSE | 35% |
| Monday | 84°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 8 to 12 mph SSE | 35% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 8 to 12 mph ENE | 37% |
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 Aug 4, 2026.