South Dennis, MA Weather - Forecast & Monthly Averages

TEMPERATURE	40
HUMIDITY	50
PRESSURE	102570
WIND COND.	40 22.3

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Weather Quick Facts

The highest monthly average temperature in South Dennis for August is 71.3 degrees
The lowest monthly average temperature in South Dennis for February is 29.4 degrees
The most monthly precipitation in South Dennis occurs in March with 9.7 inches
The air quality index in South Dennis is 14% better than the national average
The pollution index in South Dennis is 190% worse than the national average

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South Dennis 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	25°F	40°F	31°F	7.2"
February	22°F	38°F	29°F	3.1"
March	27°F	44°F	35°F	9.7"
April	36°F	54°F	45°F	8.7"
May	46°F	62°F	53°F	6.7"
June	57°F	73°F	64°F	1.9"
July	64°F	79°F	71°F	5.2"
August	63°F	81°F	71°F	3.1"
September	57°F	75°F	66°F	9.5"
October	48°F	65°F	56°F	7.3"
November	36°F	54°F	45°F	5.9"
December	27°F	42°F	34°F	5.5"

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South Dennis 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	South Dennis	Massachusetts	National
Air quality index	36	40	42
Pollution index	7,903,830	8,399,610	2,726,193

South Dennis air quality information

Measurement	Total
Days measured	359
Days with good air quality	348
Days with moderate air quality	11
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

South Dennis air quality information

Pollutant	Total
Arsenic	0.060%
Benzene	0.070%
Carbon Tetrachloride	0.010%
Lead	0.080%
Mercury	0.030%

Average monthly South Dennis temperature with heat index

South Dennis monthly precipitation with daily maximum

South Dennis monthly snow depth with daily maximum

South Dennis monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
West Chatham, MA	1,224	36	28.0%
Dennis, MA	1,962	36	28.0%
East Sandwich, MA	3,628	36	28.0%
West Yarmouth, MA	6,388	36	28.0%
Barnstable Town, MA	44,497	36	28.0%
South Dennis, MA	2,895	36	28.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Milaca, MN	2,894	32	36.0%
Claryville, KY	2,896	54	8.0%
Lake Wissota, WI	2,896	34	32.0%
Palo Cedro, CA	2,893	42	16.0%
Deer Lodge, MT	2,893	20	60.0%
South Dennis, MA	2,895	36	28.0%

Source: The South Dennis, 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.