Brčko vs O'Fallon, Illinois Climate
85%matchBrčko vs O'Fallon: a 85% climate match. Compared with Brčko, O'Fallon has more sun, 4°F (2°C) hotter summer days and 4°F (2°C) colder winter nights.
Brčko gets 31 in (791 mm) of rain a year and O'Fallon 40 in (1027 mm). Brčko's warmest month is August, at 85°F (29°C); O'Fallon's is July, at 88°F (31°C).
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
BrčkoO'Fallonsolid = high, dashed = low
Rain (in per month)
BrčkoO'Fallon
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Brčko | O'Fallon | Brčko | O'Fallon | Brčko | O'Fallon | |
| Jan | 41°F(5°C) | 39°F(4°C) | 27°F(-3°C) | 23°F(-5°C) | 2.1 in(53 mm) | 2.4 in(60 mm) |
| Feb | 46°F(8°C) | 45°F(7°C) | 29°F(-2°C) | 26°F(-3°C) | 1.9 in(48 mm) | 2.4 in(61 mm) |
| Mar | 55°F(13°C) | 56°F(13°C) | 36°F(2°C) | 35°F(2°C) | 2.1 in(54 mm) | 3.3 in(84 mm) |
| Apr | 65°F(19°C) | 67°F(20°C) | 43°F(6°C) | 45°F(7°C) | 2.1 in(54 mm) | 4.0 in(101 mm) |
| May | 74°F(23°C) | 77°F(25°C) | 51°F(11°C) | 56°F(13°C) | 3.1 in(80 mm) | 4.9 in(124 mm) |
| Jun | 80°F(27°C) | 85°F(30°C) | 58°F(14°C) | 65°F(18°C) | 3.8 in(97 mm) | 4.2 in(106 mm) |
| Jul | 84°F(29°C) | 88°F(31°C) | 60°F(16°C) | 68°F(20°C) | 3.1 in(78 mm) | 3.8 in(96 mm) |
| Aug | 85°F(29°C) | 87°F(31°C) | 60°F(15°C) | 66°F(19°C) | 2.4 in(62 mm) | 3.3 in(83 mm) |
| Sep | 75°F(24°C) | 81°F(27°C) | 52°F(11°C) | 58°F(14°C) | 2.8 in(70 mm) | 3.7 in(94 mm) |
| Oct | 65°F(19°C) | 69°F(21°C) | 44°F(7°C) | 46°F(8°C) | 2.6 in(67 mm) | 2.8 in(72 mm) |
| Nov | 53°F(12°C) | 55°F(13°C) | 37°F(3°C) | 36°F(2°C) | 2.7 in(68 mm) | 3.0 in(77 mm) |
| Dec | 42°F(6°C) | 44°F(7°C) | 30°F(-1°C) | 27°F(-3°C) | 2.4 in(60 mm) | 2.7 in(69 mm) |
1991–2020 averages, by calendar month.