Chicago vs Upper Alton Climate
87%matchChicago vs Upper Alton: a 87% climate match. Compared with Chicago, Upper Alton has more sun and 4°F (2°C) hotter summer days.
Chicago gets 39 in (991 mm) of rain a year and Upper Alton 40 in (1019 mm). July is the warmest month in both, with highs of 84°F (29°C) in Chicago and 88°F (31°C) in Upper Alton.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
ChicagoUpper Altonsolid = high, dashed = low
Rain (in per month)
ChicagoUpper Alton
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Chicago | Upper Alton | Chicago | Upper Alton | Chicago | Upper Alton | |
| Jan | 33°F(0°C) | 39°F(4°C) | 18°F(-8°C) | 21°F(-6°C) | 2.1 in(53 mm) | 2.1 in(54 mm) |
| Feb | 37°F(3°C) | 44°F(7°C) | 21°F(-6°C) | 25°F(-4°C) | 1.9 in(47 mm) | 2.1 in(54 mm) |
| Mar | 47°F(8°C) | 55°F(13°C) | 31°F(-1°C) | 35°F(1°C) | 2.4 in(61 mm) | 3.2 in(82 mm) |
| Apr | 60°F(15°C) | 67°F(20°C) | 39°F(4°C) | 45°F(7°C) | 4.5 in(115 mm) | 3.9 in(99 mm) |
| May | 71°F(22°C) | 76°F(25°C) | 49°F(9°C) | 55°F(13°C) | 4.5 in(114 mm) | 4.8 in(121 mm) |
| Jun | 80°F(27°C) | 84°F(29°C) | 59°F(15°C) | 64°F(18°C) | 4.4 in(112 mm) | 4.0 in(102 mm) |
| Jul | 84°F(29°C) | 88°F(31°C) | 64°F(18°C) | 68°F(20°C) | 3.6 in(92 mm) | 4.0 in(102 mm) |
| Aug | 82°F(28°C) | 87°F(30°C) | 63°F(17°C) | 66°F(19°C) | 4.2 in(106 mm) | 3.4 in(86 mm) |
| Sep | 76°F(25°C) | 81°F(27°C) | 56°F(13°C) | 58°F(14°C) | 3.2 in(81 mm) | 3.6 in(92 mm) |
| Oct | 64°F(18°C) | 69°F(20°C) | 44°F(7°C) | 46°F(8°C) | 3.1 in(79 mm) | 3.0 in(75 mm) |
| Nov | 49°F(9°C) | 55°F(13°C) | 33°F(1°C) | 35°F(2°C) | 2.9 in(73 mm) | 3.3 in(83 mm) |
| Dec | 37°F(3°C) | 43°F(6°C) | 23°F(-5°C) | 26°F(-3°C) | 2.3 in(58 mm) | 2.7 in(69 mm) |
1991–2020 averages, by calendar month.