Lena, IL Weather & Growing Conditions
Overnight
61°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 3am, then showers and thunderstorms likely between 3am and 4am, then patchy fog and occasional showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 61. East wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Chance Showers And Thunderstorms | 10 mph E | 93% |
| Saturday | 76°F | Patchy Fog | 5 to 10 mph SE | 99% |
| Saturday Night | 60°F | Showers And Thunderstorms | 5 to 10 mph NE | 89% |
| Sunday | 68°F | Chance Rain Showers | 10 to 15 mph NE | 49% |
| Sunday Night | 53°F | Mostly Cloudy then Chance Rain Showers | 15 mph NE | 29% |
| Monday | 63°F | Chance Rain Showers | 15 mph NE | 42% |
| Monday Night | 48°F | Slight Chance Rain Showers | 10 to 15 mph NE | 23% |
| Tuesday | 62°F | Slight Chance Rain Showers then Partly Sunny | 10 to 15 mph NE | 17% |
| Tuesday Night | 46°F | Partly Cloudy | 10 to 15 mph NE | 7% |
| Wednesday | 65°F | Mostly Sunny | 10 mph NE | 2% |
| Wednesday Night | 48°F | Partly Cloudy | 5 to 10 mph NE | 1% |
| Thursday | 66°F | Mostly Sunny | 5 mph NE | 5% |
| Thursday Night | 50°F | Partly Cloudy | 5 mph NE | 5% |
| Friday | 70°F | Mostly Sunny | 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Lena, IL
Last spring frost
Apr 26
First fall frost
Oct 13
Growing season
169 days
Hardiness zone
5a
Explore more for Lena, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Freeport Waste Wtp, Il (8.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.