Ottawa vs Waterloo, Iowa Climate
76%matchOttawa and Waterloo are a 76% climate match. Compared with Ottawa, Waterloo has half the winter rain, 4°F (2°C) hotter summer days and 4°F (2°C) milder winter nights.
Ottawa gets 37 in (949 mm) of rain a year and Waterloo 35 in (901 mm). July is the warmest month in both, with highs of 81°F (27°C) in Ottawa and 85°F (30°C) in Waterloo.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
OttawaWaterloosolid = high, dashed = low
Rain (in per month)
OttawaWaterloo
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Ottawa | Waterloo | Ottawa | Waterloo | Ottawa | Waterloo | |
| Jan | 22°F(-5°C) | 28°F(-2°C) | 6°F(-14°C) | 10°F(-12°C) | 2.4 in(62 mm) | 0.9 in(22 mm) |
| Feb | 26°F(-3°C) | 33°F(1°C) | 8°F(-14°C) | 15°F(-10°C) | 2.2 in(57 mm) | 1.2 in(30 mm) |
| Mar | 37°F(3°C) | 47°F(8°C) | 19°F(-7°C) | 27°F(-3°C) | 2.5 in(63 mm) | 2.2 in(55 mm) |
| Apr | 52°F(11°C) | 60°F(16°C) | 33°F(1°C) | 38°F(3°C) | 3.1 in(78 mm) | 3.9 in(99 mm) |
| May | 67°F(19°C) | 72°F(22°C) | 46°F(8°C) | 49°F(10°C) | 3.4 in(87 mm) | 4.7 in(120 mm) |
| Jun | 76°F(25°C) | 82°F(28°C) | 56°F(13°C) | 60°F(15°C) | 3.6 in(92 mm) | 5.0 in(128 mm) |
| Jul | 81°F(27°C) | 85°F(30°C) | 60°F(16°C) | 63°F(17°C) | 3.8 in(96 mm) | 4.5 in(114 mm) |
| Aug | 79°F(26°C) | 83°F(28°C) | 59°F(15°C) | 61°F(16°C) | 3.6 in(92 mm) | 3.8 in(96 mm) |
| Sep | 72°F(22°C) | 76°F(25°C) | 51°F(11°C) | 52°F(11°C) | 3.2 in(82 mm) | 3.3 in(85 mm) |
| Oct | 57°F(14°C) | 62°F(17°C) | 40°F(5°C) | 40°F(5°C) | 3.5 in(89 mm) | 2.8 in(70 mm) |
| Nov | 43°F(6°C) | 46°F(8°C) | 29°F(-1°C) | 28°F(-2°C) | 3.0 in(75 mm) | 1.8 in(45 mm) |
| Dec | 29°F(-1°C) | 33°F(0°C) | 16°F(-9°C) | 17°F(-9°C) | 3.0 in(76 mm) | 1.5 in(37 mm) |
1991–2020 averages, by calendar month.