Green Bay Weather & Climate

United States of America

Green Bay sees feels-like daytime highs peak around 31.5°C in July and nighttime lows bottom out near -11.9°C in January. June is the wettest month (~88 mm), while January is the driest (~11 mm). For sunshine, August leads with about 66% clear skies.

Best time to visit Green Bay

Based on mild feels-like temperatures and low rain chances, the most comfortable months are June, September, and August — expect around 16.927.4°C with roughly 36% chance of rain on a given day in June.

Green Bay climate by month

MonthLow / High °CRain %RainfallClear skiesWind
January-11.9° / -5.5°4%11 mm40%21.4 kph
February-9.9° / -3.3°5%12 mm41%21.2 kph
March-3.7° / 3.1°12%31 mm45%20.6 kph
April3.5° / 12.5°24%58 mm46%19.9 kph
May10° / 20.5°32%75 mm50%17.8 kph
June16.9° / 27.4°36%88 mm57%16.1 kph
July20° / 31.5°37%81 mm65%15.2 kph
August18.4° / 29°34%79 mm66%15.5 kph
September13.5° / 23.4°30%77 mm63%17.5 kph
October6° / 14.3°25%64 mm55%19.4 kph
November-1.5° / 4.5°17%43 mm47%20.3 kph
December-8.3° / -3°9%23 mm43%20.9 kph

Feels-like temperatures from long-term historical data; ☀ marks the most comfortable months (mild temperatures, low rain).

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