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West Haven Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January-2°F66°F32°F3.0"
February3°F58°F32°F2.5"
March9°F70°F38°F3.2"
April22°F81°F49°F5.8"
May30°F83°F57°F3.2"
June42°F93°F68°F4.8"
July54°F92°F74°F4.3"
August51°F94°F73°F3.2"
September40°F86°F66°F3.4"
October27°F82°F55°F6.1"
November19°F70°F47°F3.5"
December9°F64°F36°F4.5"

Did you know?

  • The highest monthly average temperature in West Haven for July is 74 degrees.
  • The lowest monthly average temperature in West Haven for February is 32 degrees.
  • The most monthly precipitation in West Haven occurs in October with 6.1 inches.
  • The air quality index in West Haven is 1% better than the national average.
  • The pollution index in West Haven is 186% worse than the national average.

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Compare West Haven, CT Weather To Other Cities

West Haven air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexWest HavenConnecticutNational
Air quality index494350
Pollution index14,500,3007,127,5315,066,862

West Haven air quality information

MeasurementTotal
Days measured365
Days with good air quality194
Days with moderate air quality161
Days w/ poor A.Q. for sensitive groups10
Days with unhealthy air quality

West Haven air quality information

PollutantTotal
Arsenic0.030%
Benzene0.140%
Carbon Tetrachloride0.050%
Lead0.080%
Mercury0.060%

Average monthly West Haven temperature with heat index

West Haven monthly precipitation with daily maximum

West Haven monthly snow depth with daily maximum

West Haven monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Bridgeport, CT147,022476%
Trumbull, CT36,477476%
Milford city, CT52,005476%
Stratford, CT52,300476%
Heritage Village, CT3,875492%
West Haven, CT54,972492%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Paramount, CA54,9417448%
Shoreline, WA55,021492%
Port Arthur, TX54,9134412%
Hanford, CA54,9126836%
Aloha, OR54,9083824%
West Haven, CT54,972492%
Source: The West Haven, CT weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.