Sarnia vs Merrillville Climate
89%matchOn climate, Merrillville is a 89% match for Sarnia. Very close: temperatures within 3°F (2°C), with similar rain, humidity and sun.
Sarnia gets 34 in (857 mm) of rain a year and Merrillville 40 in (1005 mm). July is the warmest month in both, with highs of 81°F (27°C) in Sarnia and 84°F (29°C) in Merrillville.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
SarniaMerrillvillesolid = high, dashed = low
Rain (in per month)
SarniaMerrillville
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Sarnia | Merrillville | Sarnia | Merrillville | Sarnia | Merrillville | |
| Jan | 31°F(0°C) | 33°F(0°C) | 18°F(-8°C) | 17°F(-8°C) | 2.3 in(58 mm) | 2.1 in(54 mm) |
| Feb | 33°F(1°C) | 37°F(3°C) | 18°F(-8°C) | 20°F(-7°C) | 2.2 in(56 mm) | 1.6 in(41 mm) |
| Mar | 42°F(5°C) | 48°F(9°C) | 26°F(-3°C) | 29°F(-1°C) | 2.1 in(53 mm) | 2.5 in(63 mm) |
| Apr | 53°F(12°C) | 61°F(16°C) | 36°F(2°C) | 39°F(4°C) | 3.1 in(78 mm) | 4.3 in(110 mm) |
| May | 66°F(19°C) | 72°F(22°C) | 46°F(8°C) | 49°F(9°C) | 3.2 in(81 mm) | 4.6 in(116 mm) |
| Jun | 76°F(25°C) | 81°F(27°C) | 56°F(13°C) | 59°F(15°C) | 3.6 in(91 mm) | 4.6 in(117 mm) |
| Jul | 81°F(27°C) | 84°F(29°C) | 62°F(17°C) | 63°F(17°C) | 2.7 in(69 mm) | 4.0 in(101 mm) |
| Aug | 80°F(27°C) | 83°F(28°C) | 62°F(16°C) | 62°F(17°C) | 2.8 in(72 mm) | 3.9 in(100 mm) |
| Sep | 74°F(23°C) | 77°F(25°C) | 55°F(13°C) | 54°F(12°C) | 3.5 in(89 mm) | 3.4 in(87 mm) |
| Oct | 62°F(16°C) | 64°F(18°C) | 45°F(7°C) | 43°F(6°C) | 3.1 in(78 mm) | 3.3 in(83 mm) |
| Nov | 48°F(9°C) | 49°F(10°C) | 34°F(1°C) | 33°F(0°C) | 2.8 in(72 mm) | 2.9 in(74 mm) |
| Dec | 37°F(3°C) | 38°F(3°C) | 25°F(-4°C) | 23°F(-5°C) | 2.4 in(60 mm) | 2.3 in(59 mm) |
1991–2020 averages, by calendar month.