Cullom, IL Weather & Growing Conditions
This Afternoon
78°F
Chance Rain Showers
A chance of rain showers. Cloudy. High near 78, with temperatures falling to around 76 in the afternoon. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Chance Rain Showers | 5 mph S | 13% |
| Tonight | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph ENE | 51% |
| Sunday | 74°F | Showers And Thunderstorms Likely | 0 to 10 mph NE | 73% |
| Sunday Night | 56°F | Showers And Thunderstorms Likely | 10 mph NE | 61% |
| Monday | 66°F | Rain Showers Likely | 10 to 15 mph ENE | 60% |
| Monday Night | 52°F | Chance Rain Showers | 10 mph ENE | 37% |
| Tuesday | 65°F | Chance Rain Showers | 10 mph NE | 45% |
| Tuesday Night | 52°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 22% |
| Wednesday | 67°F | Mostly Cloudy | 5 to 10 mph NNE | 12% |
| Wednesday Night | 52°F | Mostly Cloudy | 0 to 10 mph NNE | 3% |
| Thursday | 70°F | Partly Sunny | 5 mph NNE | 2% |
| Thursday Night | 54°F | Mostly Cloudy | 0 to 5 mph NE | 7% |
| Friday | 74°F | Partly Sunny | 0 to 5 mph NNE | 4% |
| Friday Night | 53°F | Partly Cloudy | 0 to 5 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cullom, IL
Last spring frost
Apr 25
First fall frost
Oct 20
Growing season
175 days
Hardiness zone
5b
Explore more for Cullom, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Piper City, Il (10 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.