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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.

Tonight
62°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 62, with temperatures rising to around 66 overnight. East northeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

7-day forecast for Mount Morris

WhenTempForecastWindPrecip
Tonight 62°F Showers And Thunderstorms 5 to 10 mph ENE 98%
Sunday 65°F Showers And Thunderstorms Likely 10 to 15 mph NE 74%
Sunday Night 55°F Chance Rain Showers 15 mph NE 26%
Monday 63°F Chance Rain Showers 15 mph ENE 47%
Monday Night 50°F Rain Showers Likely 10 to 15 mph NE 55%
Tuesday 61°F Rain Showers Likely 10 to 15 mph NE 55%
Tuesday Night 48°F Mostly Cloudy 5 to 15 mph NE 13%
Wednesday 63°F Partly Sunny 10 mph NE 6%
Wednesday Night 50°F Mostly Cloudy 5 to 10 mph NE 1%
Thursday 66°F Partly Sunny 5 mph NE 8%
Thursday Night 52°F Mostly Cloudy 0 to 5 mph NE 10%
Friday 69°F Partly Sunny 0 to 5 mph NE 8%
Friday Night 52°F Partly Cloudy 0 to 5 mph NE 8%
Saturday 70°F Mostly Sunny 0 to 5 mph ENE 4%

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 20, 2026.