Dennis, MA Weather - Forecast & Monthly Averages

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TEMPERATURE	43
HUMIDITY	93
PRESSURE	101456.2
WIND COND.

Weather Quick Facts

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

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

Dennis air quality

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

Air quality details

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

Average monthly Dennis temperature with heat index

Dennis monthly precipitation with daily maximum

Dennis monthly snow depth with daily maximum

Dennis monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
North Eastham, MA	1,741	36	28.0%
Chatham, MA	1,550	36	28.0%
Popponesset Island, MA	35	36	28.0%
East Harwich, MA	4,756	36	28.0%
Northwest Harwich, MA	4,123	36	28.0%
Dennis, MA	1,962	36	28.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
North Fork, AZ	1,963	44	12.0%
Breckinridge Center, KY	1,961	45	10.0%
Questa, NM	1,961	15	70.0%
Clinton, NY	1,961	27	46.0%
Great River, NY	1,961	43	14.0%
Dennis, MA	1,962	36	28.0%

Source: The 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.