Green Bay Climate by Month
Green Bay, Wisconsin, 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 Green Bay's climate in short. July is the warmest month, with highs around 82°F (28°C); January is the coolest at 27°F (-3°C), and nights dip to 11°F (-12°C). It gets 30 in (751 mm) of rain a year, spread across the months.
- Warmest month
- 82°F(28°C)
- Average high, July
- Coldest nights
- 11°F(-12°C)
- Average low, January
- Rain per year
- 30 in(751 mm)
- No clear rainy season
- Humidity
- 74%
- Sunniest: July
Best and worst months in Green Bay
Best for weatherJune and September are the best time for weather in Green Bay: highs near 75°F (24°C) and about 3.1 in (80 mm) of rain a month.
Least pleasantJanuary is the least pleasant month: it's the coldest, with highs of only 27°F (-3°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)
Green Bay weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 27°F(-3°C) | 11°F(-12°C) | 1.3 in(32 mm) | 85% | 1.3 |
| FebFebruary | 31°F(0°C) | 13°F(-10°C) | 1.1 in(28 mm) | 74% | 2.1 |
| MarMarch | 42°F(6°C) | 24°F(-4°C) | 2.1 in(53 mm) | 78% | 3.4 |
| AprApril | 55°F(13°C) | 35°F(2°C) | 2.8 in(71 mm) | 60% | 4.5 |
| MayMay | 68°F(20°C) | 46°F(8°C) | 3.5 in(90 mm) | 64% | 5.2 |
| JunJuneBest | 78°F(26°C) | 56°F(13°C) | 3.5 in(88 mm) | 67% | 5.8 |
| JulJuly | 82°F(28°C) | 60°F(16°C) | 3.3 in(84 mm) | 69% | 6.0 |
| AugAugust | 80°F(27°C) | 59°F(15°C) | 3.4 in(86 mm) | 73% | 5.1 |
| SepSeptemberBest | 73°F(23°C) | 51°F(11°C) | 2.8 in(71 mm) | 73% | 4.0 |
| OctOctober | 59°F(15°C) | 40°F(5°C) | 2.4 in(61 mm) | 74% | 2.4 |
| NovNovember | 45°F(7°C) | 29°F(-2°C) | 1.9 in(49 mm) | 81% | 1.5 |
| DecDecember | 32°F(0°C) | 18°F(-8°C) | 1.5 in(38 mm) | 87% | 1.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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