Machesney Park, IL Weather & Growing Conditions
Today
61°F
Patchy Drizzle
Patchy drizzle and isolated rain showers. Mostly cloudy. High near 61, with temperatures falling to around 54 in the afternoon. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 61°F | Patchy Drizzle | 15 mph SW | 20% |
| Tonight | 46°F | Patchy Drizzle | 15 mph SW | 28% |
| Thursday | 55°F | Chance Rain Showers | 10 to 15 mph W | 35% |
| 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% |
| Tuesday Night | 37°F | Partly Cloudy | 0 to 5 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Machesney Park, IL
Last spring frost
May 1
First fall frost
Oct 12
Growing season
162 days
Hardiness zone
5b
Explore more for Machesney Park, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Beloit, Wi (9.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.