Alto Pass, IL Weather & Growing Conditions
Tonight
72°F
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms before 9pm. Mostly clear. Low around 72, with temperatures rising to around 75 overnight. South southeast wind around 2 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 2 mph SSE | 15% |
| Saturday | 98°F | Sunny | 2 to 6 mph SW | 3% |
| Saturday Night | 73°F | Partly Cloudy | 5 mph SSW | 0% |
| Sunday | 97°F | Sunny | 6 mph WSW | 6% |
| Sunday Night | 70°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 3 mph N | 15% |
| Monday | 88°F | Chance Showers And Thunderstorms | 6 mph N | 48% |
| Monday Night | 63°F | Chance Showers And Thunderstorms | 7 mph N | 48% |
| Tuesday | 77°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 7 to 10 mph N | 15% |
| Tuesday Night | 58°F | Partly Cloudy | 5 to 10 mph N | 8% |
| Wednesday | 77°F | Mostly Sunny | 8 mph N | 3% |
| Wednesday Night | 57°F | Partly Cloudy | 3 to 7 mph NNE | 2% |
| Thursday | 77°F | Mostly Sunny | 3 to 7 mph N | 3% |
| Thursday Night | 59°F | Partly Cloudy | 2 to 6 mph NNE | 3% |
| Friday | 77°F | Mostly Sunny | 3 to 7 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Alto Pass, IL
Last spring frost
Apr 9
First fall frost
Oct 22
Growing season
195 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, Carbondale Southern Il Ap, Il (11.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.