Machesney Park, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Machesney Park, a village in Winnebago County, Illinois.
Overnight
57°F
Rain Showers
Rain showers. Cloudy. Low around 57, with temperatures rising to around 61 overnight. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Machesney Park
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Rain Showers | 15 mph S | 85% |
| Wednesday | 61°F | Slight Chance Rain Showers | 15 mph SSW | 20% |
| Wednesday Night | 45°F | Slight Chance Rain Showers | 15 mph SW | 22% |
| Thursday | 55°F | Chance Rain Showers | 10 to 15 mph W | 49% |
| Thursday Night | 38°F | Chance Rain Showers then Mostly Cloudy | 10 mph NNW | 25% |
| Friday | 48°F | Partly Sunny | 10 to 15 mph N | 5% |
| Friday Night | 30°F | Partly Cloudy | 0 to 10 mph NNW | 0% |
| Saturday | 51°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 32°F | Mostly Clear | 0 to 5 mph W | 0% |
| Sunday | 56°F | Sunny | 5 to 10 mph W | 5% |
| Sunday Night | 33°F | Mostly Clear | 0 to 5 mph WSW | 0% |
| Monday | 60°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 38°F | Mostly Clear | 5 to 10 mph W | 0% |
| Tuesday | 61°F | Sunny | 5 mph WNW | 0% |
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 Nov 4, 2026.