Alto Pass, IL Weather & Growing Conditions
Tonight
57°F
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
Showers and thunderstorms likely before 11pm, then a slight chance of showers and thunderstorms between 11pm and 2am. Mostly cloudy. Low around 57, with temperatures rising to around 59 overnight. South southwest wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 6 to 9 mph SSW | 61% |
| Wednesday | 67°F | Partly Sunny | 5 to 8 mph WSW | 5% |
| Wednesday Night | 45°F | Mostly Clear | 3 mph SW | 0% |
| Thursday | 68°F | Sunny | 2 to 6 mph SW | 0% |
| Thursday Night | 46°F | Partly Cloudy | 3 mph W | 6% |
| Friday | 60°F | Partly Sunny | 3 to 8 mph NNW | 2% |
| Friday Night | 41°F | Partly Cloudy | 5 mph NNW | 1% |
| Saturday | 57°F | Mostly Sunny | 5 mph NNW | 0% |
| Saturday Night | 37°F | Partly Cloudy | 1 mph NW | 1% |
| Sunday | 62°F | Sunny | 1 to 6 mph WNW | 5% |
| Sunday Night | 37°F | Mostly Clear | 2 mph WNW | 5% |
| Monday | 64°F | Sunny | 1 to 7 mph WSW | 2% |
| Monday Night | 40°F | Mostly Clear | 3 mph SW | 0% |
| Tuesday | 68°F | Sunny | 5 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Alto Pass, IL
Last spring frost
Apr 8
First fall frost
Oct 29
Growing season
203 days
Hardiness zone
7a
Explore more for Alto Pass, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Anna 2 Nne, Il (9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.