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Mount Sterling, IA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Mount Sterling, a community in Van Buren County, Iowa.

Today
87°F
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 87. South wind around 10 mph. Chance of precipitation is 20%.

7-day forecast for Mount Sterling

WhenTempForecastWindPrecip
Today 87°F Mostly Cloudy then Slight Chance Showers And Thunderstorms 10 mph S 15%
Tonight 66°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 5 mph NW 66%
Sunday 74°F Showers And Thunderstorms Likely then Chance Showers And Thunderstorms 5 to 10 mph N 71%
Sunday Night 60°F Chance Showers And Thunderstorms 5 to 10 mph NE 64%
Monday 64°F Showers And Thunderstorms Likely 10 mph NE 64%
Monday Night 54°F Chance Rain Showers 5 to 10 mph NE 44%
Tuesday 62°F Chance Rain Showers 5 to 10 mph NE 41%
Tuesday Night 48°F Partly Cloudy 0 to 5 mph NE 4%
Wednesday 66°F Mostly Sunny 5 mph NE 1%
Wednesday Night 52°F Partly Cloudy 0 to 5 mph NE 3%
Thursday 70°F Partly Sunny 0 to 5 mph NE 7%
Thursday Night 56°F Mostly Cloudy 0 mph 4%
Friday 73°F Partly Sunny 0 to 5 mph E 6%
Friday Night 56°F Mostly Cloudy 0 to 5 mph E 6%

Forecast source: National Weather Service (api.weather.gov) for Mount Sterling (40.618, -91.935). Updated through the day.

Growing snapshot for Mount Sterling

Last spring frost
Apr 26
First fall frost
Oct 13
Growing season
169 days
Hardiness zone
6a

More local growing data for Mount Sterling: nearby ZIP 52573 weather · frost dates · planting calendar · Iowa frost dates

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Climate data from the nearest NOAA station, Keosauqua, Ia (7.8 mi from Mount Sterling). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.