Lost Nation, IL Weather & Growing Conditions

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

Tonight

55°F

Rain

Rain. Cloudy. Low around 55, with temperatures rising to around 59 overnight. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Lost Nation

When	Temp	Forecast	Wind	Precip
Tonight	55°F	Rain	10 to 15 mph S	86%
Wednesday	59°F	Chance Rain then Chance Rain Showers	15 mph SSW	36%
Wednesday Night	45°F	Chance Rain Showers	10 to 15 mph SW	30%
Thursday	55°F	Chance Rain Showers	5 to 15 mph WSW	50%
Thursday Night	40°F	Chance Rain Showers	5 mph NW	35%
Friday	51°F	Slight Chance Rain Showers then Mostly Cloudy	5 to 10 mph N	16%
Friday Night	32°F	Partly Cloudy	0 to 5 mph N	2%
Saturday	51°F	Mostly Sunny	0 to 5 mph WNW	2%
Saturday Night	33°F	Partly Cloudy	0 mph	4%
Sunday	58°F	Mostly Sunny	0 to 5 mph W	12%
Sunday Night	34°F	Mostly Clear	0 to 5 mph W	5%
Monday	62°F	Sunny	0 to 10 mph SW	1%
Monday Night	38°F	Mostly Clear	0 to 5 mph W	0%
Tuesday	62°F	Sunny	0 to 5 mph WNW	0%

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

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

Nearby towns & communities

Amboy Ashton Compton Dixon Franklin Grove Grand Detour Harmon Lee Lee Center Nachusa Nelson Paw Paw Steward Sublette West Brooklyn

All Illinois locations ›

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 Nov 4, 2026.