Shirley, MA Weather - Forecast & Monthly Averages

TEMPERATURE	46
HUMIDITY	89
PRESSURE	99360
WIND COND.	70 13

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Weather Quick Facts

The highest monthly average temperature in Shirley for July is 74.1 degrees
The lowest monthly average temperature in Shirley for January is 27.1 degrees
The most monthly precipitation in Shirley occurs in October with 5.8 inches
The air quality index in Shirley is 5% better than the national average
The pollution index in Shirley is 177% worse than the national average

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Shirley 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	18°F	37°F	27°F	2.8"
February	18°F	39°F	28°F	3.3"
March	26°F	47°F	36°F	4.0"
April	38°F	62°F	49°F	3.9"
May	48°F	72°F	59°F	4.0"
June	57°F	80°F	68°F	5.0"
July	63°F	86°F	74°F	4.0"
August	61°F	83°F	72°F	3.6"
September	54°F	77°F	65°F	3.7"
October	43°F	65°F	53°F	5.8"
November	32°F	53°F	42°F	3.2"
December	23°F	42°F	32°F	4.0"

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Shirley 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	Shirley	Massachusetts	National
Air quality index	40	40	42
Pollution index	7,556,320	8,399,610	2,726,193

Shirley air quality

Measurement	Total
Days measured	365
Days with good air quality	312
Days with moderate air quality	52
Days w/ poor A.Q. for sensitive groups	1
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.010%
Benzene	0.070%
Carbon Tetrachloride	0.040%
Lead	0.010%
Mercury	0.040%

Average monthly Shirley temperature with heat index

Shirley monthly precipitation with daily maximum

Shirley monthly snow depth with daily maximum

Shirley monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
East Pepperell, MA	1,916	37	26.0%
Nashua, NH	89,052	37	26.0%
Groton, MA	1,127	37	26.0%
Pepperell, MA	2,685	37	26.0%
Townsend, MA	1,276	37	26.0%
Shirley, MA	1,716	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
North Berwick, ME	1,716	40	20.0%
Wicklow, NB	1,716	n/a
Central Kootenay G, BC	1,716	n/a
Winchester, IL	1,717	40	20.0%
Harlan, IN	1,715	45	10.0%
Shirley, MA	1,716	40	20.0%

Source: The Shirley, 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.