Winchester, MA Weather - Forecast & Monthly Averages

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TEMPERATURE	54
HUMIDITY	47
PRESSURE	101625.52
WIND COND.	320 9.3

Weather Quick Facts

The highest monthly average temperature in Winchester for August is 72.2 degrees
The lowest monthly average temperature in Winchester for February is 25.5 degrees
The most monthly precipitation in Winchester occurs in October with 9.5 inches
The air quality index in Winchester is 2% worse than the national average
The pollution index in Winchester is 781% worse than the national average

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Winchester Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	19°F	38°F	27°F	5.0"
February	16°F	37°F	25°F	4.6"
March	24°F	45°F	34°F	7.3"
April	36°F	60°F	47°F	9.2"
May	45°F	68°F	56°F	7.8"
June	56°F	81°F	67°F	3.2"
July	61°F	85°F	72°F	4.2"
August	61°F	86°F	72°F	4.0"
September	53°F	79°F	65°F	3.1"
October	45°F	65°F	54°F	9.5"
November	31°F	53°F	41°F	4.7"
December	20°F	38°F	29°F	5.5"

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Winchester 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.
Index	Winchester	Massachusetts	National
Air quality index	43	40	42
Pollution index	24,018,000	8,399,610	2,726,193

Winchester air quality

Measurement	Total
Days measured	365
Days with good air quality	291
Days with moderate air quality	73
Days w/ poor A.Q. for sensitive groups	1
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.030%
Benzene	0.220%
Carbon Tetrachloride	0.100%
Lead	0.280%
Mercury	0.130%

Average monthly Winchester temperature with heat index

Winchester monthly precipitation with daily maximum

Winchester monthly snow depth with daily maximum

Winchester monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Lowell, MA	114,170	37	26.0%
Framingham, MA	74,706	40	20.0%
Dover, MA	2,612	43	14.0%
Newton, MA	90,578	43	14.0%
Salem, MA	44,881	43	14.0%
Winchester, MA	23,430	43	14.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Winter Gardens, CA	23,447	64	28.0%
Valinda, CA	23,406	72	44.0%
Acworth, GA	23,459	52	4.0%
New Brighton, MN	23,459	46	8.0%
Junction City, KS	23,460	32	36.0%
Winchester, MA	23,430	43	14.0%

Source: The Winchester, MA 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.