Oblong, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oblong, a village in Crawford County, Illinois.
Tonight
59°F
Rain then Rain Showers
Rain and a slight chance of thunderstorms before midnight, then rain showers. Mostly cloudy, with a low around 59. South wind 13 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Oblong
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Rain then Rain Showers | 13 to 18 mph S | 94% |
| Wednesday | 67°F | Slight Chance Light Rain then Partly Sunny | 9 to 14 mph SW | 26% |
| Wednesday Night | 44°F | Mostly Cloudy | 3 to 7 mph WSW | 0% |
| Thursday | 66°F | Sunny | 6 to 13 mph WSW | 0% |
| Thursday Night | 44°F | Mostly Cloudy | 5 mph WNW | 4% |
| Friday | 59°F | Partly Sunny | 3 to 10 mph NNW | 4% |
| Friday Night | 38°F | Partly Cloudy | 5 to 8 mph NNW | 4% |
| Saturday | 57°F | Mostly Sunny | 6 mph NNW | 1% |
| Saturday Night | 34°F | Partly Cloudy | 3 mph WNW | 2% |
| Sunday | 62°F | Mostly Sunny | 2 to 9 mph W | 7% |
| Sunday Night | 34°F | Mostly Clear | 6 mph NW | 6% |
| Monday | 64°F | Sunny | 3 to 10 mph W | 3% |
| Monday Night | 38°F | Mostly Clear | 6 mph SW | 1% |
| Tuesday | 68°F | Sunny | 5 to 8 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Oblong (39.002, -87.911). Updated through the day.
Growing snapshot for Oblong
Last spring frost
Apr 13
First fall frost
Oct 22
Growing season
190 days
Hardiness zone
6b
More local growing data for Oblong: nearby ZIP 62449 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Robinson, Il (7.2 mi from Oblong). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.