Chatham climate
Cool coastal summers meet storm, wind, and flood planning
NOAA's Chatham station reports January averages of 38.6°F high and 24.9°F low and July averages of 75.9°F high and 63.1°F low. The 1991-2020 monthly normals sum to about 45.93 inches of precipitation and 24.5 inches of snow annually.
The Town reports a FEMA floodplain based on a 1-in-100-year storm event and a coastal model projection of about 2.5 feet of sea-level rise by 2050. These are planning references, not a parcel forecast. Review flood maps, elevation, drainage, wind, power, insurance, heating, and safe access.
Living through the seasons
Summers are the easier season. Winter comfort deserves a closer look.
- Overall Comfort
- Good
3.3 / 5
- Average Summer High
- 69°F
- Days Above 90°F
- 0 days/year
- Summer Feel
- Excellent
Mild · 69°F
Excellent
4.8 / 5
- Average Winter Low
- 36°F / 2°C
- Days Below Freezing
- 27 days/year
- Winter Feel
- Good
Very Good
Good
2.9 / 5
The shape of the year
Humidity, comfortable months, and sunshine show how the seasons differ.
- Humidity
- 83%
- Comfortable Months
- 5 months
- Solar Exposure
- 1424 peak sun hrs/yr
Poor
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
- 5.5 µg/m³ 2021-2025 modeled average
- Best Months
- Jun, Jul, Aug, Sep, Oct
- Toughest Months
- Feb, Jan, Mar
- Heat Risk
- Low
- Drought Risk
- Low
- Weather Volatility
- Moderate
Good · 5.5 µg/m³ 2021-2025 modeled average
Very Good
2.9 / 5
Chatham in everyday life
Could Chatham work for you?
What may work well
- Summer temperatures are moderated at the station.
- The town has conservation, beaches, library, and indoor options.
- Coastal planning information can be reviewed before a move.
What to think about
- Wind, water, outages, and insurance materially affect the home.
- Winter roads and heating still matter.
- Station normals do not answer parcel-level flood exposure.
Choose a home ready for the coast
Inspect heating and cooling
Review HVAC, insulation, windows, shade, filters, power, heating fuel, and service history.
Check flood and wind
Review maps, elevation, drainage, roof, windows, insurance, roads, evacuation, and storm maintenance.
Keep indoor choices
Pair beaches and conservation with library, meals, exercise, culture, calls, reading, and home activities.
Use station limits
Label the Chatham station, 1991-2020 period, and difference between normals and the exact coastal home.
Questions retirees ask
Is Chatham's climate mild?
Summers are moderated by the coast, but wind, storms, winter freezing, outages, and flood planning make a simple year-round label misleading.
How much snow does Chatham get?
The NOAA 1991-2020 monthly normals sum to about 24.5 inches annually. Snow is only one part of coastal winter planning.
What should a coastal home inspection include?
Review flood, elevation, drainage, wind, roof, windows, heating, power, insurance, safe entries, evacuation, and the route to care.
Does sea-level projection predict my house?
No. The Town's model is a planning projection, not a parcel-level forecast or a guaranteed future closure or damage date.
Chatham may offer comfortable summer temperatures, but the retirement home must also carry coastal wind, water, outages, winter travel, heating, insurance, and the full year of care and errands.
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
- Open-Meteo / Copernicus CAMS
Used for Air Quality, Long-Term Fine-Particle Pollution
Checked 2026-05-18
- Federal Emergency Management Agency National Risk Index
Used for Drought Risk
- NOAA IBTrACS
Used for Weather Volatility
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Partner with Retirement ListsResearch and writing byGrant Gibson
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