Green Bay climate
Green Bay offers cool summers and a long freezing season that the home must handle
Green Bay’s average summer high is 77.6°F, with one day above 90°F. The average winter low is 12.8°F, with 157 days below freezing. June through September are the best months in the local profile, while December through February are the toughest and only four months are marked comfortable.
Humidity is 81 percent, solar exposure is 1,329 peak sun hours per year, allergy levels are Poor, and modeled PM2.5 is 5.7 micrograms per cubic meter for 2021 through 2025. Heat risk is Low, storm exposure is High, flood exposure is Moderate, and the drought row is a medium long run screen rather than a current forecast.
Living through the seasons
Summers are the easier season. Winter comfort deserves a closer look.
- Overall Comfort
- Moderate
2.5 / 5
- Average Summer High
- 78°F
- Days Above 90°F
- 1 day/year
- Summer Feel
- Excellent
Mild · 78°F
Excellent
4.8 / 5
- Average Winter Low
- 13°F / -11°C
- Days Below Freezing
- 157 days/year
- Winter Feel
- Poor
Poor
Poor
1 / 5
The shape of the year
Humidity, comfortable months, and sunshine show how the seasons differ.
- Humidity
- 81%
- Comfortable Months
- 4 months
- Solar Exposure
- 1329 peak sun hrs/yr
Poor
Poor
Poor
Air, allergies, and weather
Air quality and allergies shape day to day comfort. The best months and weather risks help with timing.
Air and allergies
- Air Quality
- Excellent
- Allergy Levels
- Poor
4.7 / 5
Current AQI
Checking…
Current PM2.5
Checking…
Timing and weather
- Long Term Fine Particle Pollution
- 5.7 µg/m³ 2021-2025 modeled average
- Best Months
- Jun, Jul, Aug, Sep
- Toughest Months
- Feb, Jan, Dec
- Heat Risk
- Low
- Drought Risk
- Medium (0.4-0.6)
- Weather Volatility
- Moderate
Good · 5.7 µg/m³ 2021-2025 modeled average
Very Good
3.2 / 5
Green Bay in everyday life
Could Green Bay work for you?
What may work well
- A 77.6°F average summer high and one day above 90°F support a comfortable warm season for households that enjoy parks and trails.
- Excellent modeled air quality and Low heat risk add useful inputs to the seasonal comparison.
- The city’s winter recreation information gives cold weather planning more than one direction, even when outdoor time is limited.
What to think about
- A 12.8°F average winter low and 157 freezing days make heating, entryways, mobility, and car readiness central.
- 81 percent humidity, Poor allergy levels, and only four comfortable months keep indoor air and home condition important.
- High storm and Moderate flood rows add power, drainage, insurance, and emergency route questions.
Make Green Bay’s seasons workable at home
Compare the outdoor months
List the June through September activities the household values, then identify indoor and mobility alternatives for December through February.
Inspect the winter envelope
Review heating, insulation, windows, entryways, pipes, snow removal, parking, vehicle readiness, indoor air, and places to rest during very cold days.
Pair comfort with hazards
Add storm, tornado, flood, power, drainage, emergency, insurance, and route questions to the seasonal home review.
Choose the decision actions
Save the climate notes, Compare a second home, and choose Find my fit after seasonal comfort, mobility, and hazard questions are clear.
Questions retirees ask
What is Green Bay’s summer climate like?
The average summer high is 77.6°F and the climate profile records one day above 90°F. Parks and trails may be easier to use in the warm season, while shade, humidity, indoor air, and the property still matter.
How demanding is Green Bay winter?
The average winter low is 12.8°F and 157 days fall below freezing. Review heating, insulation, windows, entryways, snow and ice management, vehicle readiness, parking, and indoor alternatives.
Which months are the easiest for outdoor plans?
June through September are listed as the best months, while December through February are the toughest. The local profile marks four months comfortable, so personal cold tolerance should guide the comparison.
How should I read the air and allergy rows?
The profile lists 81 percent humidity, Poor allergy levels, Excellent modeled air quality, and 5.7 micrograms per cubic meter of modeled fine particles. Each measure answers a different home and comfort question.
Does Low heat risk remove hazard planning?
No. Brown County storm and tornado risk is High and flood risk is Moderate. Pair the mild summer heat row with power, drainage, insurance, emergency, and route planning.
Green Bay offers a pleasant summer window, but winter is a major part of the decision. Save the seasonal home plan, Compare another address, and use Find my fit after heating, mobility, air, storm, and flood questions are answered.
Sources
Climate comfort helps estimate how practical daily life may feel across the year, especially for heat, humidity, cold, and seasonal constraints.
Seasonal timing, health conditions, air conditioning, air quality, and elevation can change the lived experience.
- NASA POWER
Used for Overall Comfort, Summer Feel, Average Summer High, Days Above 90°F, Winter Feel, Average Winter Low, Days Below Freezing, Humidity, Comfortable Months, Solar Exposure, Best Months, Toughest Months, Allergy Levels, Heat Risk, Weather Volatility
- Open-Meteo / Copernicus CAMS, checked against U.S. EPA AirData
Used for Air Quality, Long-Term Fine-Particle Pollution
Checked 2026-05-18
- World Resources Institute (WRI)
Used for Drought Risk
Checked 2026-07-13
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