Old Mill Creek, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Old Mill Creek, a village in Lake County, Illinois.
This Afternoon
66°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Cloudy, with a high near 66. East wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Old Mill Creek
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Showers And Thunderstorms Likely | 5 mph E | 69% |
| Tonight | 62°F | Showers And Thunderstorms | 5 to 10 mph NE | 98% |
| Sunday | 66°F | Showers And Thunderstorms | 15 to 20 mph NE | 82% |
| Sunday Night | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 15 to 20 mph NE | 15% |
| Monday | 64°F | Chance Rain Showers | 15 to 20 mph ENE | 29% |
| Monday Night | 51°F | Chance Rain Showers | 15 mph ENE | 26% |
| Tuesday | 62°F | Chance Rain Showers | 15 mph ENE | 26% |
| Tuesday Night | 51°F | Mostly Cloudy | 5 to 15 mph NE | 14% |
| Wednesday | 63°F | Slight Chance Rain Showers | 5 to 10 mph NE | 17% |
| Wednesday Night | 52°F | Mostly Cloudy | 5 to 10 mph NE | 7% |
| Thursday | 65°F | Partly Sunny | 5 to 10 mph NE | 4% |
| Thursday Night | 53°F | Mostly Cloudy | 0 to 5 mph NE | 12% |
| Friday | 69°F | Partly Sunny | 0 to 5 mph NE | 10% |
| Friday Night | 53°F | Partly Cloudy | 0 to 5 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Old Mill Creek (42.433, -87.982). Updated through the day.
Growing snapshot for Old Mill Creek
Last spring frost
Apr 30
First fall frost
Oct 21
Growing season
173 days
Hardiness zone
5b
More local growing data for Old Mill Creek: nearby ZIP 60083 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Antioch
Bannockburn
Beach Park
Buffalo Grove
Burtons Bridge
Deer Park
Deerfield
Forest Lake
Fox Lake
Fox Lake Hills
Gages Lake
Grandwood Park
Grayslake
Green Oaks
Gurnee
Hainesville
Hawthorn Woods
Highland Park
Highwood
Holiday Hills
Indian Creek
Island Lake
Kildeer
Knollwood
Lake Bluff
Lake Forest
Lake Villa
Lake Zurich
Libertyville
Lincolnshire
Climate data from the nearest NOAA station, Chicago Waukegan Rgnl Ap, Il (4.5 mi from Old Mill Creek). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.