Omaha, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Omaha, a village in Gallatin County, Illinois.
Tonight
58°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 58, with temperatures rising to around 60 overnight. South wind 7 to 12 mph, with gusts as high as 24 mph. Chance of precipitation is 100%.
7-day forecast for Omaha
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Showers And Thunderstorms | 7 to 12 mph S | 98% |
| Wednesday | 68°F | Partly Sunny | 6 to 12 mph SW | 12% |
| Wednesday Night | 44°F | Partly Cloudy | 3 mph WSW | 0% |
| Thursday | 68°F | Sunny | 2 to 9 mph SW | 0% |
| Thursday Night | 44°F | Partly Cloudy | 2 mph W | 5% |
| Friday | 61°F | Partly Sunny | 2 to 9 mph NNW | 6% |
| Friday Night | 39°F | Mostly Cloudy | 2 to 7 mph NNW | 2% |
| Saturday | 57°F | Mostly Sunny | 5 mph NNW | 0% |
| Saturday Night | 35°F | Partly Cloudy | 1 mph NW | 1% |
| Sunday | 61°F | Sunny | 0 to 7 mph W | 6% |
| Sunday Night | 34°F | Mostly Clear | 3 mph NW | 6% |
| Monday | 64°F | Sunny | 1 to 7 mph WNW | 2% |
| Monday Night | 38°F | Mostly Clear | 5 mph SW | 0% |
| Tuesday | 68°F | Sunny | 2 to 6 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Omaha (37.890, -88.306). Updated through the day.
Growing snapshot for Omaha
Last spring frost
Apr 15
First fall frost
Oct 19
Growing season
183 days
Hardiness zone
7a
More local growing data for Omaha: nearby ZIP 62871 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Carmi 3, Il (14.1 mi from Omaha). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.