Joliet vs Waterloo, Iowa Climate
93%matchOn climate, Waterloo is a 93% match for Joliet. Compared with Joliet, Waterloo has the same summer highs, 6°F (3°C) colder winter nights and less rain in winter.
Joliet gets 39 in (986 mm) of rain a year and Waterloo 35 in (901 mm). July is the warmest month in both, with highs of 86°F (30°C) in Joliet 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)
JolietWaterloosolid = high, dashed = low
Rain (in per month)
JolietWaterloo
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Joliet | Waterloo | Joliet | Waterloo | Joliet | Waterloo | |
| Jan | 33°F(1°C) | 28°F(-2°C) | 17°F(-9°C) | 10°F(-12°C) | 1.7 in(43 mm) | 0.9 in(22 mm) |
| Feb | 38°F(3°C) | 33°F(1°C) | 20°F(-7°C) | 15°F(-10°C) | 1.6 in(40 mm) | 1.2 in(30 mm) |
| Mar | 49°F(10°C) | 47°F(8°C) | 30°F(-1°C) | 27°F(-3°C) | 2.4 in(61 mm) | 2.2 in(55 mm) |
| Apr | 62°F(17°C) | 60°F(16°C) | 40°F(4°C) | 38°F(3°C) | 4.5 in(114 mm) | 3.9 in(99 mm) |
| May | 73°F(23°C) | 72°F(22°C) | 50°F(10°C) | 49°F(10°C) | 4.5 in(115 mm) | 4.7 in(120 mm) |
| Jun | 82°F(28°C) | 82°F(28°C) | 60°F(16°C) | 60°F(15°C) | 4.8 in(122 mm) | 5.0 in(128 mm) |
| Jul | 86°F(30°C) | 85°F(30°C) | 64°F(18°C) | 63°F(17°C) | 4.1 in(104 mm) | 4.5 in(114 mm) |
| Aug | 84°F(29°C) | 83°F(28°C) | 63°F(17°C) | 61°F(16°C) | 4.1 in(103 mm) | 3.8 in(96 mm) |
| Sep | 78°F(26°C) | 76°F(25°C) | 55°F(13°C) | 52°F(11°C) | 3.5 in(89 mm) | 3.3 in(85 mm) |
| Oct | 65°F(18°C) | 62°F(17°C) | 43°F(6°C) | 40°F(5°C) | 2.9 in(74 mm) | 2.8 in(70 mm) |
| Nov | 50°F(10°C) | 46°F(8°C) | 32°F(0°C) | 28°F(-2°C) | 2.6 in(65 mm) | 1.8 in(45 mm) |
| Dec | 38°F(3°C) | 33°F(0°C) | 22°F(-5°C) | 17°F(-9°C) | 2.2 in(56 mm) | 1.5 in(37 mm) |
1991–2020 averages, by calendar month.