South Barrington, IL
Climate overview — based on NOAA 1991-2020 normals from BARRINGTON 3SW, IL US.
Year-round temperatures (°F)
Climate summary
South Barrington has an annual average temperature of 48°F with about 40.4 inches of precipitation per year and 38.5 inches of snow. The warmest month is July (average high 81.3°F), and the coldest is January (average low 13.4°F). May is typically the wettest month (5.15 in) and February the driest (1.90 in). Snow typically falls from November through April.
Best time to visit South Barrington
Full guide →Climate change signal
All-time records →54 of 366 (14.8%) of South Barrington's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1960s | 76 | |
| 1970s | 57 | |
| 1980s | 86 | |
| 1990s | 26 | |
| 2000s | 41 | |
| 2010s | 52 | |
| 2020s | 28 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 28.7°F | 13.4°F | 21.1°F | 2.07 in | 12.6 in | 10 |
| February | 32.8°F | 16.4°F | 24.6°F | 1.90 in | 8.5 in | 9 |
| March | 44.5°F | 26.5°F | 35.5°F | 2.35 in | 4.6 in | 10 |
| April | 57.5°F | 37.2°F | 47.3°F | 3.95 in | 1.1 in | 13 |
| May | 68.5°F | 48.3°F | 58.4°F | 5.15 in | — | 14 |
| June | 77.5°F | 58.1°F | 67.8°F | 4.60 in | — | 13 |
| July | 81.3°F | 62.6°F | 72.0°F | 4.02 in | — | 10 |
| August | 79.2°F | 61.2°F | 70.2°F | 4.58 in | — | 11 |
| September | 72.4°F | 53.6°F | 63.0°F | 3.65 in | — | 10 |
| October | 60.1°F | 41.5°F | 50.8°F | 3.39 in | 0.1 in | 11 |
| November | 46.3°F | 30.2°F | 38.2°F | 2.58 in | 2.0 in | 11 |
| December | 34.2°F | 19.7°F | 27.0°F | 2.19 in | 9.6 in | 11 |
Climate twins of South Barrington
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).