Oregon, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oregon, a city in Ogle County, Illinois.
This Afternoon
59°F
Slight Chance Rain Showers
A slight chance of rain showers and a slight chance of drizzle. Cloudy. High near 59, with temperatures falling to around 54 in the afternoon. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast for Oregon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 59°F | Slight Chance Rain Showers | 10 to 15 mph WSW | 10% |
| Tonight | 44°F | Slight Chance Rain Showers then Cloudy | 10 to 15 mph SW | 14% |
| Thursday | 54°F | Chance Rain | 5 to 15 mph WNW | 50% |
| Thursday Night | 36°F | Mostly Cloudy | 5 to 10 mph N | 13% |
| Friday | 48°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Friday Night | 27°F | Mostly Clear | 0 to 5 mph NNW | 0% |
| Saturday | 50°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 30°F | Mostly Clear | 0 mph | 0% |
| Sunday | 58°F | Sunny | 5 mph W | 1% |
| Sunday Night | 32°F | Clear | 0 to 5 mph WSW | 0% |
| Monday | 61°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 38°F | Clear | 0 to 5 mph WSW | 0% |
| Tuesday | 61°F | Sunny | 0 to 5 mph WNW | 1% |
| Tuesday Night | 36°F | Partly Cloudy | 0 mph | 1% |
Forecast source: National Weather Service (api.weather.gov) for Oregon (42.013, -89.336). Updated through the day.
Growing snapshot for Oregon
Last spring frost
Apr 29
First fall frost
Oct 7
Growing season
161 days
Hardiness zone
5b
More local growing data for Oregon: nearby ZIP 61061 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Baileyville
Byron
Creston
Davis Junction
Forreston
Hillcrest
Holcomb
Kings
Leaf River
Monroe Center
Mount Morris
Polo
Rochelle
Stillman Valley
Climate data from the nearest NOAA station, Polo 5Nw, Il (13.9 mi from Oregon). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.