Lost Nation, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lost Nation, a community in Lee County, Illinois.
Today
79°F
Showers And Thunderstorms
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms between 1pm and 5pm, then showers and thunderstorms likely. Cloudy. High near 79, with temperatures falling to around 76 in the afternoon. South southeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast for Lost Nation
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Showers And Thunderstorms | 5 mph SSE | 76% |
| Tonight | 62°F | Showers And Thunderstorms | 0 to 5 mph ESE | 94% |
| Sunday | 69°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 56% |
| Sunday Night | 54°F | Chance Rain Showers | 10 to 15 mph NE | 36% |
| Monday | 64°F | Chance Rain Showers | 15 mph ENE | 47% |
| Monday Night | 49°F | Slight Chance Rain Showers | 10 to 15 mph NE | 21% |
| Tuesday | 63°F | Slight Chance Rain Showers then Partly Sunny | 10 to 15 mph NE | 16% |
| Tuesday Night | 47°F | Partly Cloudy | 5 to 10 mph NE | 12% |
| Wednesday | 66°F | Mostly Sunny | 5 to 10 mph NE | 2% |
| Wednesday Night | 49°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 68°F | Mostly Sunny | 0 to 5 mph NNE | 4% |
| Thursday Night | 50°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph NE | 2% |
| Friday Night | 50°F | Partly Cloudy | 0 to 5 mph ENE | 2% |
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
Nearby towns & communities
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Ashton
Compton
Dixon
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Lee
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Paw Paw
Steward
Sublette
West Brooklyn
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.