Portage, Michigan Climate by Month
Portage, Michigan, United States
Warm summers and freezing winters, with rain spread through the year.
Warm summers and freezing winters, with rain spread through the year: that's Portage's climate in short. Expect highs of 84°F (29°C) in July and 33°F (0°C) in January, with the coldest nights (January) near 17°F (-8°C). It gets 37 in (938 mm) of rain a year, spread across the months.
- Warmest month
- 84°F(29°C)
- Average high, July
- Coldest nights
- 17°F(-8°C)
- Average low, January
- Rain per year
- 37 in(938 mm)
- No clear rainy season
- Humidity
- 71%
- Sunniest: July
Best and worst months in Portage
Best for weatherSeptember is the best time for weather in Portage: highs near 75°F (24°C) and about 3.5 in (89 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 33°F (0°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in September.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Portage weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 33°F(0°C) | 17°F(-8°C) | 2.3 in(59 mm) | 88% | 1.3 |
| FebFebruary | 36°F(2°C) | 18°F(-8°C) | 1.9 in(47 mm) | 80% | 2.2 |
| MarMarch | 46°F(8°C) | 27°F(-3°C) | 2.2 in(56 mm) | 68% | 3.5 |
| AprApril | 59°F(15°C) | 37°F(3°C) | 3.6 in(92 mm) | 61% | 4.4 |
| MayMay | 71°F(22°C) | 48°F(9°C) | 4.2 in(107 mm) | 63% | 5.1 |
| JunJune | 80°F(27°C) | 58°F(14°C) | 4.0 in(102 mm) | 70% | 5.8 |
| JulJuly | 84°F(29°C) | 61°F(16°C) | 3.7 in(93 mm) | 70% | 6.0 |
| AugAugust | 82°F(28°C) | 60°F(15°C) | 3.4 in(86 mm) | 74% | 5.0 |
| SepSeptemberBest | 75°F(24°C) | 52°F(11°C) | 3.5 in(89 mm) | 70% | 4.2 |
| OctOctober | 62°F(17°C) | 41°F(5°C) | 3.2 in(82 mm) | 68% | 2.6 |
| NovNovember | 48°F(9°C) | 31°F(0°C) | 2.5 in(64 mm) | 72% | 1.6 |
| DecDecember | 37°F(3°C) | 23°F(-5°C) | 2.4 in(61 mm) | 71% | 1.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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