Chatham, Canada vs Lockport, Illinois Climate
93%matchOn climate, Lockport is a 93% match for Chatham. Very close: temperatures within 3°F (2°C), with similar rain, humidity and sun.
Chatham gets 35 in (879 mm) of rain a year and Lockport 39 in (985 mm). July is the warmest month in both, with highs of 82°F (28°C) in Chatham and 85°F (29°C) in Lockport.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
ChathamLockportsolid = high, dashed = low
Rain (in per month)
ChathamLockport
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Chatham | Lockport | Chatham | Lockport | Chatham | Lockport | |
| Jan | 31°F(-1°C) | 33°F(0°C) | 19°F(-7°C) | 16°F(-9°C) | 2.5 in(64 mm) | 1.8 in(45 mm) |
| Feb | 33°F(0°C) | 37°F(3°C) | 18°F(-8°C) | 20°F(-7°C) | 2.3 in(58 mm) | 1.6 in(41 mm) |
| Mar | 42°F(6°C) | 49°F(9°C) | 27°F(-3°C) | 30°F(-1°C) | 2.2 in(56 mm) | 2.4 in(60 mm) |
| Apr | 54°F(12°C) | 61°F(16°C) | 37°F(3°C) | 39°F(4°C) | 3.1 in(79 mm) | 4.5 in(115 mm) |
| May | 67°F(20°C) | 73°F(23°C) | 48°F(9°C) | 49°F(10°C) | 3.3 in(84 mm) | 4.5 in(115 mm) |
| Jun | 77°F(25°C) | 82°F(28°C) | 58°F(15°C) | 59°F(15°C) | 3.3 in(84 mm) | 4.7 in(120 mm) |
| Jul | 82°F(28°C) | 85°F(29°C) | 63°F(17°C) | 64°F(18°C) | 3.4 in(86 mm) | 4.0 in(101 mm) |
| Aug | 81°F(27°C) | 83°F(28°C) | 62°F(17°C) | 62°F(17°C) | 3.0 in(76 mm) | 4.1 in(104 mm) |
| Sep | 75°F(24°C) | 77°F(25°C) | 56°F(13°C) | 54°F(12°C) | 3.2 in(81 mm) | 3.4 in(87 mm) |
| Oct | 62°F(17°C) | 65°F(18°C) | 45°F(7°C) | 43°F(6°C) | 3.0 in(76 mm) | 3.0 in(75 mm) |
| Nov | 48°F(9°C) | 50°F(10°C) | 35°F(2°C) | 32°F(0°C) | 2.8 in(70 mm) | 2.6 in(66 mm) |
| Dec | 37°F(3°C) | 37°F(3°C) | 26°F(-3°C) | 22°F(-6°C) | 2.6 in(65 mm) | 2.2 in(56 mm) |
1991–2020 averages, by calendar month.