Machesney Park, IL Weather & Climate Normals
What a normal year in Machesney Park actually looks like
On the 30-year record NOAA keeps for Machesney Park, IL, the comfort score comes out to 43/100, strongly seasonal: Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. Only 5 months a year land in the 55–75°F range this site treats as mild.
How much Machesney Park's weather actually swings
Average temperatures in Machesney Park run from 18°F in Jan up to 70°F in Jul, a 51.8°F seasonal swing, one of the widest gaps in this dataset.
Machesney Park, month by month
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 25°F | 11°F | 1.6in | 9.8in |
| Feb | 29°F | 14°F | 1.52in | 7.3in |
| Mar | 42°F | 24°F | 2.13in | 4.3in |
| Apr | 55°F | 34°F | 3.72in | 1.1in |
| May | 67°F | 46°F | 4.34in | 0in |
| Jun | 76°F | 56°F | 5.64in | 0in |
| Jul | 80°F | 60°F | 3.36in | 0in |
| Aug | 78°F | 58°F | 4.14in | 0in |
| Sep | 71°F | 50°F | 3.83in | 0in |
| Oct | 58°F | 39°F | 2.77in | 0.2in |
| Nov | 43°F | 27°F | 2.4in | 2.7in |
| Dec | 31°F | 17°F | 1.96in | 10.2in |
If you're timing a visit, May, Jun, Jul, Aug, and Sep are Machesney Park's mildest stretch; if you're moving there, you should plan around Jan's cold instead.
How wet Machesney Park actually gets
Over a typical year, Machesney Park sees about 37.41in of precipitation a year across roughly 108 days with measurable rain or snow, with 35.6in of snow a year.
Machesney Park against the rest of the country
Out of 4876 cities scored here, Machesney Park comes in at 4002; within IL alone it ranks 242 of 330. Population is about 22,839.
Checking the actual forecast
These figures come from Beloit, WI US, the NOAA station 9.4 miles from Machesney Park, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why this uses the nearest NOAA station · How the comfort score is calculated