Rockford, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rockford, a city in Winnebago County, Illinois.
Overnight
62°F
Mostly Clear
Mostly clear, with a low around 62. South wind around 5 mph.
7-day forecast for Rockford
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Mostly Clear | 5 mph S | 0% |
| Tuesday | 85°F | Mostly Sunny | 5 to 10 mph SSW | 6% |
| Tuesday Night | 66°F | Chance Showers And Thunderstorms | 0 to 5 mph WSW | 74% |
| Wednesday | 77°F | Showers And Thunderstorms Likely | 0 to 5 mph W | 74% |
| Wednesday Night | 61°F | Showers And Thunderstorms Likely | 0 to 5 mph NNW | 71% |
| Thursday | 79°F | Chance Rain Showers then Partly Sunny | 0 to 5 mph NE | 35% |
| Thursday Night | 59°F | Partly Cloudy | 0 to 5 mph NE | 13% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph SSE | 6% |
| Friday Night | 62°F | Mostly Clear | 0 to 5 mph SSW | 6% |
| Saturday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SSW | 15% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms | 5 mph SSW | 22% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 22% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SSW | 42% |
| Monday | 85°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 41% |
Forecast source: National Weather Service (api.weather.gov) for Rockford (42.259, -89.065). Updated through the day.
Growing snapshot for Rockford
Last spring frost
Apr 24
First fall frost
Oct 17
Growing season
174 days
Hardiness zone
5b
More local growing data for Rockford: nearby ZIP 61104 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Cherry Valley
Durand
Loves Park
Machesney Park
New Milford
Pecatonica
Rockton
Roscoe
South Beloit
Westlake Village
Winnebago
Climate data from the nearest NOAA station, Rockford Gtr Rockford Ap, Il (4.1 mi from Rockford). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.