Ottawa vs Chatham, Canada Climate
78%matchOn climate, Chatham is a 78% match for Ottawa. Compared with Ottawa, Chatham has the same summer highs and 11°F (6°C) milder winter nights.
Ottawa gets 37 in (949 mm) of rain a year and Chatham 35 in (879 mm). July is the warmest month in both, with highs of 81°F (27°C) in Ottawa and 82°F (28°C) in Chatham.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
OttawaChathamsolid = high, dashed = low
Rain (in per month)
OttawaChatham
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Ottawa | Chatham | Ottawa | Chatham | Ottawa | Chatham | |
| Jan | 22°F(-5°C) | 31°F(-1°C) | 6°F(-14°C) | 19°F(-7°C) | 2.4 in(62 mm) | 2.5 in(64 mm) |
| Feb | 26°F(-3°C) | 33°F(0°C) | 8°F(-14°C) | 18°F(-8°C) | 2.2 in(57 mm) | 2.3 in(58 mm) |
| Mar | 37°F(3°C) | 42°F(6°C) | 19°F(-7°C) | 27°F(-3°C) | 2.5 in(63 mm) | 2.2 in(56 mm) |
| Apr | 52°F(11°C) | 54°F(12°C) | 33°F(1°C) | 37°F(3°C) | 3.1 in(78 mm) | 3.1 in(79 mm) |
| May | 67°F(19°C) | 67°F(20°C) | 46°F(8°C) | 48°F(9°C) | 3.4 in(87 mm) | 3.3 in(84 mm) |
| Jun | 76°F(25°C) | 77°F(25°C) | 56°F(13°C) | 58°F(15°C) | 3.6 in(92 mm) | 3.3 in(84 mm) |
| Jul | 81°F(27°C) | 82°F(28°C) | 60°F(16°C) | 63°F(17°C) | 3.8 in(96 mm) | 3.4 in(86 mm) |
| Aug | 79°F(26°C) | 81°F(27°C) | 59°F(15°C) | 62°F(17°C) | 3.6 in(92 mm) | 3.0 in(76 mm) |
| Sep | 72°F(22°C) | 75°F(24°C) | 51°F(11°C) | 56°F(13°C) | 3.2 in(82 mm) | 3.2 in(81 mm) |
| Oct | 57°F(14°C) | 62°F(17°C) | 40°F(5°C) | 45°F(7°C) | 3.5 in(89 mm) | 3.0 in(76 mm) |
| Nov | 43°F(6°C) | 48°F(9°C) | 29°F(-1°C) | 35°F(2°C) | 3.0 in(75 mm) | 2.8 in(70 mm) |
| Dec | 29°F(-1°C) | 37°F(3°C) | 16°F(-9°C) | 26°F(-3°C) | 3.0 in(76 mm) | 2.6 in(65 mm) |
1991–2020 averages, by calendar month.