Rockton, IL Weather & Climate Normals
What a normal year in Rockton actually looks like
On the 30-year record NOAA keeps for Rockton, 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 Rockton's weather actually swings
Average temperatures in Rockton 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.
Rockton, 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 Rockton's mildest stretch; if you're moving there, you should plan around Jan's cold instead.
How wet Rockton actually gets
Over a typical year, Rockton sees about 37.41in of precipitation a year across roughly 108 days with measurable rain or snow, with 35.6in of snow a year.
Rockton against the rest of the country
Out of 4876 cities scored here, Rockton comes in at 4094; within IL alone it ranks 274 of 330. Population is about 7,861.
Checking the actual forecast
These figures come from Beloit, WI US, the NOAA station 4.3 miles from Rockton, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is