Superior Climate by Month
Superior, Wisconsin, United States
Warm summers and bitterly cold winters, with rain spread through the year.
Superior has warm summers and bitterly cold winters, with rain spread through the year. Expect highs of 79°F (26°C) in July and 22°F (-6°C) in January, with the coldest nights (January) near 3°F (-16°C). It gets 29 in (749 mm) of rain a year, spread across the months.
- Warmest month
- 79°F(26°C)
- Average high, July
- Coldest nights
- 3°F(-16°C)
- Average low, January
- Rain per year
- 29 in(749 mm)
- No clear rainy season
- Humidity
- 74%
- Sunniest: July
Best and worst months in Superior
Best for weatherThe most comfortable weather comes from June to August, with highs around 76°F (25°C) and about 3.9 in (99 mm) of rain a month.
Least pleasantJanuary and February are the least pleasant; January is the coldest, with highs of only 22°F (-6°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 August.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Superior weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 22°F(-6°C) | 3°F(-16°C) | 0.8 in(20 mm) | 75% | 1.3 |
| FebFebruary | 26°F(-3°C) | 6°F(-14°C) | 0.8 in(21 mm) | 95% | 2.2 |
| MarMarch | 37°F(3°C) | 19°F(-7°C) | 1.5 in(37 mm) | 76% | 3.4 |
| AprApril | 48°F(9°C) | 33°F(0°C) | 2.4 in(61 mm) | 58% | 4.4 |
| MayMay | 63°F(17°C) | 43°F(6°C) | 3.3 in(85 mm) | 65% | 5.2 |
| JunJuneBest | 73°F(23°C) | 51°F(11°C) | 3.9 in(100 mm) | 73% | 5.7 |
| JulJulyBest | 79°F(26°C) | 58°F(15°C) | 3.8 in(97 mm) | 71% | 5.9 |
| AugAugustBest | 77°F(25°C) | 58°F(15°C) | 3.9 in(100 mm) | 69% | 5.0 |
| SepSeptember | 69°F(21°C) | 50°F(10°C) | 3.2 in(82 mm) | 74% | 3.7 |
| OctOctober | 56°F(13°C) | 38°F(3°C) | 2.8 in(70 mm) | 65% | 2.1 |
| NovNovember | 40°F(5°C) | 26°F(-3°C) | 1.7 in(44 mm) | 79% | 1.3 |
| DecDecember | 27°F(-3°C) | 12°F(-11°C) | 1.3 in(32 mm) | 83% | 0.9 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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