| Month | Average (°F) | Record (°F) | Average (inches) | |||
|---|---|---|---|---|---|---|
| High ☀️ | Low 🌙 | High ☀️ | Low 🌙 | Precipitation 💧 | Snow ❄️ | |
| January | 32.4 | 19.0 | 67 | -25 | 2.3 | 12.4 |
| February | 36.5 | 22.4 | 75 | -19 | 2.1 | 10.0 |
| March | 47.5 | 31.5 | 86 | -5 | 2.7 | 5.7 |
| April | 59.5 | 41.3 | 91 | 10 | 4.1 | 1.0 |
| May | 71.0 | 52.0 | 98 | 28 | 4.8 | 0.0 |
| June | 80.7 | 62.2 | 104 | 35 | 4.5 | 0.0 |
| July | 84.9 | 67.7 | 106 | 46 | 4.0 | 0.0 |
| August | 82.8 | 66.5 | 102 | 43 | 4.1 | 0.0 |
| September | 76.1 | 58.7 | 101 | 33 | 3.3 | 0.0 |
| October | 63.3 | 46.4 | 94 | 19 | 3.9 | 0.1 |
| November | 49.1 | 34.7 | 81 | -2 | 2.7 | 1.5 |
| December | 37.4 | 24.8 | 72 | -20 | 2.3 | 7.8 |
| Entire year | 60.2 | 44.0 | 106 | -25 | 40.8 | 39.3 |
|
More Chicago Weather Records
1901–2024
|
||
|---|---|---|
| Highest daily low | 85 °F | July 29, 1916 |
| Lowest daily high | -11 °F | January 18, 1994 |
| Greatest daily range (Difference of high and low) |
48 °F | January 18, 1996 |
| Greatest difference in daily high over two conscutive days |
47 °F | Jan 18–19, 1996 |
| Most daily precipitation | 6.2 inches | July 12, 1957 |
| Most monthly precipitation | 14.2 inches | September 1961 |
| Most yearly precipitation | 53.9 inches | 2019 |
| Most yearly days with precipitation | 154 | 2018 |
| Earliest snow in season | October 8 | 2000 |
| Latest snow in season | May 11 | 1966 |
| Most daily snow | 17.6 inches | January 2, 1999 |
| Most monthly snow | 42.5 inches | January 1918 |
| Most yearly snow | 95.3 inches | 1978 |
| Most snow in a winter | 89.7 inches | 1978–1979 |
| Greatest snow accumulation | 29.0 inches | January 14, 1979 |
| Earliest freeze | October 2 | 1974 |
| Earliest day ≥ 80 °F | March 3 | 1974 |
| Earliest day ≥ 90 °F | April 10 | 1930 |
| Earliest day ≥ 100 °F | June 1 | 1934 |
| Latest freeze | May 15 | 1980 |
| Latest day ≥ 80 °F | November 1 | 1950 |
| Latest day ≥ 90 °F | October 6 | 1963 |
| Latest day ≥ 100 °F | September 7 | 1960 |
| Most days in a year < 0 °F | 31 | 1963 |
| Most days in a year < 32 °F | 135 | 1947 |
| Most days in a year ≥ 80 °F | 108 | 2022 |
| Most days in a year ≥ 90 °F | 48 | 1988 |
| Most days in a year ≥ 100 °F | 8 | 1988 |
|
Chicago Weather Streaks
Most consecutive days...
|
||
|---|---|---|
| With precipitation | 11 days | May 15–25, 1949 |
| Without precipitation | 30 days | Jan 7 – Feb 5, 1919 |
| With snow | 9 days | Jan 18–26, 2019 |
| High temperature at or below freezing |
43 days | Dec 28, 1976 – Feb 8, 1977 |
| High temperature ≥ 80 °F | 44 days | Jun 26 – Aug 8, 2012 |
| High temperature ≥ 90 °F | 11 days | Aug 19–29, 1959 |
| High temperature ≥ 100 °F | 3 days | Jul 4–6, 2012 |