Lake Barrington, IL Weather & Climate Normals
What a normal year in Lake Barrington actually looks like
On the 30-year record NOAA keeps for Lake Barrington, 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 Lake Barrington's weather actually swings
Average temperatures in Lake Barrington run from 21°F in Jan up to 72°F in Jul, a 51°F seasonal swing, one of the widest gaps in this dataset.
Lake Barrington, month by month
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 29°F | 14°F | 1.76in | 11in |
| Feb | 33°F | 16°F | 1.93in | 12.8in |
| Mar | 44°F | 26°F | 2.49in | 5.3in |
| Apr | 57°F | 36°F | 3.95in | 1.8in |
| May | 68°F | 47°F | 4.57in | 0in |
| Jun | 78°F | 58°F | 4.38in | 0in |
| Jul | 82°F | 62°F | 4.01in | 0in |
| Aug | 81°F | 61°F | 4.19in | 0in |
| Sep | 74°F | 53°F | 3.38in | 0in |
| Oct | 61°F | 42°F | 3.2in | 0in |
| Nov | 47°F | 30°F | 2.47in | 2.5in |
| Dec | 34°F | 20°F | 2.12in | 9.7in |
If you're timing a visit, May, Jun, Jul, Aug, and Sep are Lake Barrington's mildest stretch; if you're moving there, you should plan around Jan's cold instead.
How wet Lake Barrington actually gets
Over a typical year, Lake Barrington sees about 38.45in of precipitation a year across roughly 128 days with measurable rain or snow, with 43.1in of snow a year.
Lake Barrington against the rest of the country
Out of 4876 cities scored here, Lake Barrington comes in at 4142; within IL alone it ranks 280 of 330. Population is about 5,160.
Checking the actual forecast
These figures come from Mundelein 4 Wsw, IL US, the NOAA station 5.6 miles from Lake Barrington, 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