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Lost Nation, IL Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Lost Nation, a community in Lee County, Illinois.

This Afternoon
72°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy, with a high near 72. South southeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Lost Nation

WhenTempForecastWindPrecip
This Afternoon 72°F Showers And Thunderstorms Likely 5 mph SSE 72%
Tonight 63°F Showers And Thunderstorms 0 to 5 mph N 100%
Sunday 66°F Showers And Thunderstorms 10 to 15 mph NE 77%
Sunday Night 54°F Chance Rain Showers 10 to 15 mph NE 27%
Monday 63°F Chance Rain Showers 10 to 15 mph ENE 48%
Monday Night 50°F Rain Showers Likely 10 mph NE 56%
Tuesday 62°F Rain Showers Likely 10 mph NE 56%
Tuesday Night 48°F Slight Chance Rain Showers then Mostly Cloudy 5 to 10 mph NE 15%
Wednesday 64°F Partly Sunny 5 to 10 mph NE 5%
Wednesday Night 49°F Mostly Cloudy 0 to 5 mph NNE 0%
Thursday 67°F Partly Sunny 0 to 5 mph NE 6%
Thursday Night 52°F Mostly Cloudy 0 to 5 mph NE 9%
Friday 70°F Partly Sunny 0 to 5 mph NE 7%
Friday Night 51°F Partly Cloudy 0 to 5 mph NE 7%

Forecast source: National Weather Service (api.weather.gov) for Lost Nation (41.912, -89.368). Updated through the day.

Growing snapshot for Lost Nation

Last spring frost
Apr 21
First fall frost
Oct 19
Growing season
180 days
Hardiness zone
5b

More local growing data for Lost Nation: nearby ZIP 61057 weather · frost dates · planting calendar · Illinois frost dates

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Climate data from the nearest NOAA station, Dixon 1W, Il (6.7 mi from Lost Nation). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.