Omaha, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Omaha, a village in Gallatin County, Illinois.
Overnight
63°F
Clear
Clear. Low around 63, with temperatures rising to around 65 overnight. East northeast wind around 1 mph.
7-day forecast for Omaha
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Clear | 1 mph ENE | 0% |
| Tuesday | 87°F | Sunny | 0 to 3 mph ENE | 0% |
| Tuesday Night | 63°F | Mostly Clear | 2 mph NE | 0% |
| Wednesday | 89°F | Sunny | 1 mph SSW | 0% |
| Wednesday Night | 68°F | Mostly Clear | 1 mph SSE | 2% |
| Thursday | 89°F | Slight Chance Rain Showers | 1 to 6 mph SSW | 20% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 1 to 5 mph S | 46% |
| Friday | 89°F | Chance Showers And Thunderstorms | 1 to 6 mph SW | 46% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 2 mph SSW | 32% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 1 to 5 mph SSW | 32% |
| Saturday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 3 mph S | 23% |
| Sunday | 91°F | Sunny | 2 to 7 mph SSW | 9% |
| Sunday Night | 72°F | Mostly Clear | 6 mph SSW | 6% |
| Monday | 93°F | Sunny | 3 to 8 mph SSW | 5% |
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 Aug 4, 2026.