Allendale, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Allendale, a village in Wabash County, Illinois.
Overnight
63°F
Clear
Clear. Low around 63, with temperatures rising to around 66 overnight. North northeast wind around 1 mph.
7-day forecast for Allendale
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Clear | 1 mph NNE | 0% |
| Tuesday | 85°F | Sunny | 3 mph ENE | 0% |
| Tuesday Night | 64°F | Mostly Clear | 2 mph ENE | 0% |
| Wednesday | 87°F | Sunny | 1 mph SW | 0% |
| Wednesday Night | 68°F | Partly Cloudy | 2 mph S | 4% |
| Thursday | 87°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 2 to 7 mph SSW | 22% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 5 mph S | 49% |
| Friday | 86°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 49% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 3 mph SSW | 36% |
| Saturday | 87°F | Chance Showers And Thunderstorms | 2 to 6 mph SSW | 34% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 5 mph S | 25% |
| Sunday | 89°F | Mostly Sunny | 3 to 9 mph SSW | 11% |
| Sunday Night | 72°F | Mostly Clear | 8 mph SSW | 11% |
| Monday | 90°F | Sunny | 5 to 10 mph SSW | 10% |
Forecast source: National Weather Service (api.weather.gov) for Allendale (38.528, -87.710). Updated through the day.
Growing snapshot for Allendale
Last spring frost
Apr 2
First fall frost
Oct 31
Growing season
209 days
Hardiness zone
6b
More local growing data for Allendale: nearby ZIP 62410 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Mt Carmel, Il (9 mi from Allendale). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.