Oswego, Illinois vs Round Lake Beach Climate
99%matchOswego and Round Lake Beach are a 99% climate match. Very close: temperatures within 3°F (2°C), with similar rain, humidity and sun.
Oswego gets 39 in (990 mm) of rain a year and Round Lake Beach 37 in (935 mm). July is the warmest month in both, with highs of 85°F (29°C) in Oswego and 82°F (28°C) in Round Lake Beach.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
OswegoRound Lake Beachsolid = high, dashed = low
Rain (in per month)
OswegoRound Lake Beach
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Oswego | Round Lake Beach | Oswego | Round Lake Beach | Oswego | Round Lake Beach | |
| Jan | 32°F(0°C) | 30°F(-1°C) | 15°F(-9°C) | 14°F(-10°C) | 1.7 in(44 mm) | 1.8 in(46 mm) |
| Feb | 36°F(2°C) | 34°F(1°C) | 19°F(-7°C) | 17°F(-8°C) | 1.6 in(41 mm) | 1.5 in(39 mm) |
| Mar | 48°F(9°C) | 45°F(7°C) | 29°F(-2°C) | 27°F(-3°C) | 2.3 in(59 mm) | 2.3 in(58 mm) |
| Apr | 61°F(16°C) | 57°F(14°C) | 38°F(4°C) | 37°F(3°C) | 4.4 in(113 mm) | 4.0 in(102 mm) |
| May | 73°F(23°C) | 69°F(20°C) | 49°F(9°C) | 47°F(8°C) | 4.8 in(121 mm) | 4.3 in(108 mm) |
| Jun | 82°F(28°C) | 78°F(26°C) | 59°F(15°C) | 56°F(13°C) | 4.9 in(124 mm) | 4.2 in(107 mm) |
| Jul | 85°F(29°C) | 82°F(28°C) | 63°F(17°C) | 61°F(16°C) | 4.0 in(101 mm) | 3.7 in(95 mm) |
| Aug | 83°F(28°C) | 80°F(27°C) | 61°F(16°C) | 60°F(16°C) | 4.0 in(102 mm) | 4.3 in(108 mm) |
| Sep | 77°F(25°C) | 74°F(23°C) | 53°F(12°C) | 53°F(12°C) | 3.5 in(90 mm) | 3.6 in(91 mm) |
| Oct | 64°F(18°C) | 62°F(17°C) | 42°F(5°C) | 41°F(5°C) | 3.0 in(75 mm) | 2.8 in(70 mm) |
| Nov | 49°F(9°C) | 47°F(8°C) | 31°F(-1°C) | 30°F(-1°C) | 2.6 in(66 mm) | 2.3 in(59 mm) |
| Dec | 36°F(2°C) | 35°F(2°C) | 20°F(-6°C) | 20°F(-7°C) | 2.1 in(54 mm) | 2.0 in(52 mm) |
1991–2020 averages, by calendar month.