Machesney Park, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Machesney Park, a village in Winnebago County, Illinois.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
7-day forecast for Machesney Park
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 5 to 10 mph SSW | 7% |
| Tonight | 65°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 | 59°F | Showers And Thunderstorms Likely | 0 to 5 mph NNW | 66% |
| Thursday | 79°F | Chance Rain Showers then Partly Sunny | 0 to 5 mph NE | 32% |
| Thursday Night | 58°F | Mostly Clear | 0 to 5 mph NE | 12% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph S | 5% |
| Friday Night | 62°F | Mostly Clear | 0 to 5 mph SSW | 6% |
| Saturday | 84°F | Mostly Sunny | 0 to 10 mph SSW | 12% |
| Saturday Night | 67°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 23% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms | 5 to 15 mph SW | 23% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SSW | 44% |
| Monday | 84°F | Chance Rain Showers | 5 to 10 mph SSW | 42% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 5 to 10 mph WNW | 44% |
Forecast source: National Weather Service (api.weather.gov) for Machesney Park (42.368, -89.025). Updated through the day.
Growing snapshot for Machesney Park
Last spring frost
May 1
First fall frost
Oct 12
Growing season
162 days
Hardiness zone
5b
More local growing data for Machesney Park: nearby ZIP 61115 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Cherry Valley
Durand
Loves Park
New Milford
Pecatonica
Rockford
Rockton
Roscoe
South Beloit
Westlake Village
Winnebago
Climate data from the nearest NOAA station, Beloit, Wi (9.8 mi from Machesney Park). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.