Iowa City climate planning
Iowa City offers a useful warm season while winter access shapes the year
Iowa City's climate route shows an overall Moderate comfort label. The average summer high is 84°F with 18 days above 90°F, while the average winter low is 17°F and there are 144 days below freezing. Five months are comfortable, humidity is 76 percent, and solar exposure is 1,469 peak sun hours per year.
Air quality is Excellent, allergy levels are Poor, and modeled fine particle pollution is 5.9 micrograms per cubic meter for 2021 through 2025. May through September are the best listed months, while December through February are toughest. Heating, snow and ice, indoor air, storms, flood review, power, and seasonal routes remain part of the home decision.
Living through the seasons
Summers are the easier season. Winter comfort deserves a closer look.
- Overall Comfort
- Moderate
2.4 / 5
- Average Summer High
- 84°F
- Days Above 90°F
- 18 days/year
- Summer Feel
- Very Good
Mild · 84°F
Excellent
4.1 / 5
- Average Winter Low
- 17°F / -8°C
- Days Below Freezing
- 144 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
- 76%
- Comfortable Months
- 5 months
- Solar Exposure
- 1469 peak sun hrs/yr
Good
Fair
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
- 5.9 µg/m³ 2021-2025 modeled average
- Best Months
- May, Jun, Jul, Aug, Sep
- Toughest Months
- Feb, Jan, Dec
- Heat Risk
- Low
- Drought Risk
- Moderate
- Weather Volatility
- Moderate
Good · 5.9 µg/m³ 2021-2025 modeled average
Very Good
3.2 / 5
Iowa City in everyday life
Could Iowa City work for you?
What may work well
- Iowa City's 84°F average summer high, 18 days above 90°F, five comfortable months, and May through September best stretch support a useful warm season.
- Excellent air quality and 5.9 micrograms per cubic meter of modeled fine particles provide useful air information for the home review.
- Parks, natural areas, campus culture, transit, and indoor facilities can give the week alternatives when weather changes the plan.
What to think about
- A 17°F average winter low and 144 freezing days make heating, ice, snow, entry surfaces, tires, daylight, and support important.
- Poor allergy levels and 76 percent humidity can alter how often outdoor plans feel comfortable.
- High storm and Moderate flood, heat, drought, and natural disaster rows add drainage, insurance, power, heating, and alternate route questions.
Plan Iowa City around winter, allergies, and seasonal routes
Visit across the calendar
Use the 84°F summer high, 18 days above 90°F, 17°F winter low, 144 freezing days, five comfortable months, humidity, allergies, and the best and toughest months in the home review.
Price indoor comfort
Ask about heating, insulation, pipes, windows, filters, ventilation, moisture, roof, power, water, insurance, maintenance, snow and ice handling, parking, and an indoor alternative.
Keep climate labels distinct
Keep Moderate overall comfort, Excellent air, Poor allergies, Low climate heat risk, Moderate drought, Moderate volatility, High storm, and Moderate flood and natural disaster rows separate.
Use the decision actions
Save the strongest Iowa City climate plan, Compare another home, and choose Find my fit after seasonal, heating, air, water, storm, insurance, winter, and route questions are visible.
Questions retirees ask
What is Iowa City's winter climate like?
The average winter low is 17°F, there are 144 days below freezing, and winter feel is Poor. December, January, and February are the toughest listed months, so heating, snow, ice, entry surfaces, care, and support deserve attention.
How hot is Iowa City in summer?
The average summer high is 84°F with 18 days above 90°F and a Very Good summer feel. Humidity is 76 percent, allergy levels are Poor, and cooling, shade, power, water, and indoor alternatives still matter.
Are allergies a concern in Iowa City?
Yes. The published allergy level is Poor even though air quality is Excellent and modeled fine particle pollution averages 5.9 micrograms per cubic meter for 2021 through 2025. Review indoor air and personal sensitivity.
What climate hazards should I review?
The profile shows High storm, Moderate flood, heat, drought, and natural disaster rows, plus Low wildfire and Moderate weather volatility. Review drainage, trees, roof, insurance, power, heating, snow, ice, and alternate routes.
Which months are listed as toughest?
December, January, and February are the toughest listed months. Use them to ask about heating, snow, ice, allergies, power, care, transit, groceries, and the route home.
Iowa City offers a useful summer and strong air quality labels, but 144 freezing days, Poor allergies, High storm exposure, and winter access questions make the dwelling and route carry much of the year. Save the seasonal review, Compare another address, and choose Find my fit after heating, air, insurance, power, and support 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
- Federal Emergency Management Agency National Risk Index
Used for Drought Risk
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