Stillman Valley, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Stillman Valley, a village in Ogle County, Illinois.
This Afternoon
60°F
Slight Chance Rain Showers
A slight chance of rain showers and a slight chance of drizzle. Cloudy. High near 60, with temperatures falling to around 54 in the afternoon. Southwest wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for Stillman Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 60°F | Slight Chance Rain Showers | 15 mph SW | 10% |
| Tonight | 44°F | Slight Chance Rain Showers then Cloudy | 15 mph SW | 11% |
| Thursday | 55°F | Chance Rain | 10 to 15 mph W | 49% |
| Thursday Night | 35°F | Mostly Cloudy | 10 mph N | 13% |
| Friday | 48°F | Mostly Sunny | 5 to 15 mph N | 0% |
| Friday Night | 27°F | Mostly Clear | 0 to 5 mph NNW | 0% |
| Saturday | 51°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 30°F | Mostly Clear | 0 to 5 mph W | 0% |
| Sunday | 58°F | Sunny | 5 to 10 mph W | 1% |
| Sunday Night | 31°F | Clear | 0 to 5 mph WSW | 0% |
| Monday | 61°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 37°F | Clear | 0 to 10 mph WSW | 0% |
| Tuesday | 62°F | Sunny | 0 to 5 mph WNW | 1% |
| Tuesday Night | 35°F | Partly Cloudy | 0 to 5 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Stillman Valley (42.105, -89.179). Updated through the day.
Growing snapshot for Stillman Valley
Last spring frost
Apr 24
First fall frost
Oct 17
Growing season
174 days
Hardiness zone
5b
More local growing data for Stillman Valley: nearby ZIP 61084 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
Oregon
Polo
Rochelle
Climate data from the nearest NOAA station, Rockford Gtr Rockford Ap, Il (6.9 mi from Stillman Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.