London Mills, IL Weather & Growing Conditions
Tonight
68°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a low around 68. East southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 68°F | Showers And Thunderstorms Likely | 5 mph ESE | 55% |
| Sunday | 75°F | Showers And Thunderstorms Likely | 3 to 13 mph NNE | 65% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 to 14 mph NE | 56% |
| Monday | 65°F | Showers And Thunderstorms | 13 mph ENE | 75% |
| Monday Night | 54°F | Rain Showers Likely | 10 mph NE | 64% |
| Tuesday | 64°F | Chance Rain Showers | 10 mph NE | 52% |
| Tuesday Night | 50°F | Mostly Cloudy | 3 to 9 mph NNE | 10% |
| Wednesday | 66°F | Partly Sunny | 7 mph NNE | 2% |
| Wednesday Night | 52°F | Partly Cloudy | 1 to 6 mph NNE | 1% |
| Thursday | 70°F | Partly Sunny | 3 mph NNE | 2% |
| Thursday Night | 55°F | Slight Chance Rain Showers | 2 mph NNE | 15% |
| Friday | 73°F | Slight Chance Rain Showers then Partly Sunny | 1 to 5 mph NE | 15% |
| Friday Night | 55°F | Partly Cloudy | 2 mph NE | 7% |
| Saturday | 75°F | Mostly Sunny | 3 mph ENE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for London Mills, IL
Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
177 days
Hardiness zone
5b
Explore more for London Mills, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Avon, Il (11.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.