Green Bay, WI Weather
Green Bay hourly forecast: next 24 hours
Today's high of 99°F (37°C) is about 17°F (9°C) above the typical July high of 82°F (28°C).
Current conditions in detail
Green Bay weather tomorrow (Saturday, July 18)
Tomorrow in Green Bay looks sunny, with a high of 80° and an overnight low of 62°. Precipitation chance is modest at 36%. Winds top out near 13 mph, and the UV index reaches 2 (low).
Green Bay 14-day forecast
About the weather in Green Bay
Located in Wisconsin, United States, Green Bay experiences a humid continental climate with warm summers and cold, often snowy winters. Afternoon temperatures peak near 82°F (28°C) in July and dip to about 27°F (-3°C) in January, with around 34.5 inches (877 mm) of precipitation falling across the year.
Green Bay weather: quick facts
- Hottest month: July - highs near 82°F (28°C)
- Coldest month: January - highs near 27°F (-3°C)
- Record high: 99°F (37°C) · Record low: -24°F (-31°C) (2015–2024)
- Wettest month: July (11 rainy days) · Sunniest: July (12.7 h sun/day)
- Climate type: humid continental - warm summers and cold, often snowy winters
- Snow: about 23 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 82°F (28°C) and overnight lows stay near 64°F (18°C). The coolest month is January, with typical highs of 27°F (-3°C) and lows around 14°F (-10°C). Based on 2015–2024 weather data, temperatures have reached as high as 99°F (37°C) and dropped as low as -24°F (-31°C).
Rain, sun and snow
July is usually the wettest month. It brings about 3.8 inches (97 mm) of rain over 11 days, while February is the driest. July brings the most sunshine, averaging 12.7 hours of sun a day. Snow falls on about 23 days in a typical year, mostly from November through April.
Season by season
Spring (March through May)
Spring in Green Bay stays on the cool side of mild, with daytime highs averaging 54°F (12°C) and nights around 36°F (2°C); expect showers on roughly 34 days across the season, plus around 6 snowy days.
Summer (June through August)
Summer in Green Bay is pleasantly warm, with daytime highs averaging 79°F (26°C) and nights around 62°F (16°C); expect showers on roughly 34 days across the season.
Fall (September through November)
Fall in Green Bay is crisp but comfortable, with daytime highs averaging 59°F (15°C) and nights around 44°F (7°C); expect showers on roughly 27 days across the season, plus around 2 snowy days.
Winter (December through February)
Winter in Green Bay is frigid, with daytime highs averaging 30°F (-1°C) and nights around 16°F (-9°C); expect showers on roughly 23 days across the season, plus around 14 snowy days. Wind makes those temperatures feel harsher than they sound - pair the forecast winds with the wind speed converter to judge conditions on exposed skin.
Average temperatures in Green Bay by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 27° | 14° | 7 | 1.5 in | 5.2 h/day | 76% |
| February | 30° | 13° | 7 | 1.4 in | 7.2 h/day | 71% |
| March | 42° | 25° | 10 | 2.6 in | 8.1 h/day | 67% |
| April | 53° | 35° | 13 | 3.5 in | 8.9 h/day | 66% |
| May | 67° | 48° | 11 | 3.7 in | 10.6 h/day | 65% |
| June | 77° | 59° | 11 | 3.8 in | 11.9 h/day | 66% |
| July | 82° | 64° | 11 | 3.8 in | 12.7 h/day | 68% |
| August | 79° | 63° | 11 | 3.8 in | 11.3 h/day | 71% |
| September | 73° | 57° | 9 | 2.8 in | 9.7 h/day | 73% |
| October | 59° | 44° | 11 | 3.3 in | 7.1 h/day | 71% |
| November | 45° | 31° | 7 | 2.1 in | 6.1 h/day | 70% |
| December | 33° | 21° | 8 | 2.3 in | 4.6 h/day | 75% |