Alvan (Alvin), IL Weather & Growing Conditions
Overnight
65°F
Mostly Cloudy
Mostly cloudy, with a low around 65. East southeast wind around 7 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 65°F | Mostly Cloudy | 7 mph ESE | 5% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 8 mph SSE | 42% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms | 3 to 7 mph S | 40% |
| Sunday | 82°F | Showers And Thunderstorms Likely | 1 to 9 mph NNE | 57% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 12 mph NE | 62% |
| Monday | 70°F | Showers And Thunderstorms Likely | 14 mph ENE | 66% |
| Monday Night | 54°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 46% |
| Tuesday | 68°F | Chance Showers And Thunderstorms | 13 mph NE | 28% |
| Tuesday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 12 mph NNE | 16% |
| Wednesday | 69°F | Mostly Cloudy | 6 to 9 mph NNE | 6% |
| Wednesday Night | 54°F | Mostly Cloudy | 2 to 9 mph NNE | 6% |
| Thursday | 72°F | Partly Sunny | 3 to 7 mph NNE | 4% |
| Thursday Night | 54°F | Mostly Cloudy | 2 to 7 mph NNE | 4% |
| Friday | 73°F | Mostly Sunny | 2 to 7 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Alvan (Alvin), IL
Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
6a
Explore more for Alvan (Alvin), IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Danville, Il (10.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.