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Shellsburg, IA Weather & Growing Conditions

Today
80°F
Occasional Showers And Thunderstorms then Showers And Thunderstorms Likely
Occasional showers and thunderstorms before 11am, then showers and thunderstorms likely between 11am and 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then showers and thunderstorms likely. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 80. South wind 5 to 10 mph. Chance of precipitation is 90%.

7-day forecast

WhenTempForecastWindPrecip
Today 80°F Occasional Showers And Thunderstorms then Showers And Thunderstorms Likely 5 to 10 mph S 87%
Tonight 62°F Showers And Thunderstorms Likely 5 to 10 mph N 67%
Sunday 68°F Chance Rain Showers 10 to 15 mph NE 52%
Sunday Night 55°F Chance Rain Showers 10 to 15 mph NE 46%
Monday 64°F Chance Rain Showers 15 mph NE 46%
Monday Night 50°F Chance Rain Showers 10 mph NE 35%
Tuesday 62°F Chance Rain Showers then Partly Sunny 10 mph NE 28%
Tuesday Night 46°F Mostly Clear 5 to 10 mph NE 5%
Wednesday 66°F Sunny 5 mph NE 0%
Wednesday Night 50°F Partly Cloudy 5 mph NE 2%
Thursday 67°F Mostly Sunny 5 mph E 8%
Thursday Night 53°F Partly Cloudy 0 to 5 mph E 6%
Friday 70°F Mostly Sunny 5 mph E 6%
Friday Night 54°F Partly Cloudy 5 mph E 7%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Shellsburg, IA

Last spring frost
May 3
First fall frost
Oct 3
Growing season
151 days
Hardiness zone
5a

Explore more for Shellsburg, IA: full frost dates · planting calendar · Iowa frost dates

Climate data from the nearest NOAA station, Vinton, Ia (7.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.