Rockford, IL Weather & Climate Normals
What a normal year in Rockford actually looks like
On the 30-year record NOAA keeps for Rockford, 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 Rockford's weather actually swings
Average temperatures in Rockford run from 22°F in Jan up to 74°F in Jul, a 52°F seasonal swing, one of the widest gaps in this dataset.
Rockford, month by month
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 29°F | 15°F | 1.6in | 10.9in |
| Feb | 33°F | 18°F | 1.63in | 8.5in |
| Mar | 47°F | 28°F | 2.4in | 4.9in |
| Apr | 60°F | 39°F | 3.75in | 0.9in |
| May | 71°F | 50°F | 4.18in | 0in |
| Jun | 81°F | 60°F | 5.23in | 0in |
| Jul | 84°F | 64°F | 3.81in | 0in |
| Aug | 82°F | 62°F | 4.19in | 0in |
| Sep | 75°F | 54°F | 3.62in | 0in |
| Oct | 62°F | 42°F | 2.63in | 0.2in |
| Nov | 47°F | 31°F | 2.27in | 2.3in |
| Dec | 34°F | 20°F | 1.93in | 9.4in |
If you're timing a visit, May, Jun, Jul, Aug, and Sep are Rockford's mildest stretch; if you're moving there, you should plan around Jan's cold instead.
How wet Rockford actually gets
Over a typical year, Rockford sees about 37.24in of precipitation a year across roughly 121 days with measurable rain or snow, with 37.1in of snow a year.
Rockford against the rest of the country
Out of 4876 cities scored here, Rockford comes in at 3951; within IL alone it ranks 229 of 330. Population is about 147,486.
Checking the actual forecast
These figures come from Rockford Gtr Rockford Ap, IL US, the NOAA station 4.8 miles from Rockford, 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