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Mount Morris, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Mount Morris, a village in Ogle County, Illinois.

Today
78°F
Showers And Thunderstorms
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then showers and thunderstorms likely. Cloudy. High near 78, with temperatures falling to around 75 in the afternoon. Southeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

7-day forecast for Mount Morris

WhenTempForecastWindPrecip
Today 78°F Showers And Thunderstorms 5 to 10 mph SE 100%
Tonight 62°F Showers And Thunderstorms 5 to 10 mph ENE 91%
Sunday 68°F Showers And Thunderstorms Likely 10 to 15 mph NE 55%
Sunday Night 55°F Chance Rain Showers 15 mph NE 34%
Monday 64°F Chance Rain Showers 15 mph ENE 45%
Monday Night 49°F Slight Chance Rain Showers 10 to 15 mph NE 21%
Tuesday 62°F Slight Chance Rain Showers then Partly Sunny 10 to 15 mph NE 15%
Tuesday Night 48°F Partly Cloudy 5 to 15 mph NE 11%
Wednesday 65°F Mostly Sunny 10 to 15 mph NE 2%
Wednesday Night 50°F Partly Cloudy 5 to 10 mph NE 1%
Thursday 67°F Mostly Sunny 5 to 10 mph NNE 4%
Thursday Night 50°F Partly Cloudy 0 to 5 mph NE 4%
Friday 70°F Mostly Sunny 5 to 10 mph NE 3%
Friday Night 51°F Partly Cloudy 0 to 5 mph ENE 2%

Forecast source: National Weather Service (api.weather.gov) for Mount Morris (42.048, -89.429). Updated through the day.

Growing snapshot for Mount Morris

Last spring frost
Apr 29
First fall frost
Oct 7
Growing season
161 days
Hardiness zone
5b

More local growing data for Mount Morris: nearby ZIP 61054 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Polo 5Nw, Il (8.4 mi from Mount Morris). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.