Newcastle, WA Weather - Forecast & Monthly Averages

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TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.

Weather Quick Facts

The highest monthly average temperature in Newcastle for August is 67.5 degrees
The lowest monthly average temperature in Newcastle for December is 40.6 degrees
The most monthly precipitation in Newcastle occurs in November with 5.7 inches
The air quality index in Newcastle is 7% worse than the national average
The pollution index in Newcastle is 60% better than the national average

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Newcastle 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	36°F	48°F	41°F	4.7"
February	37°F	51°F	44°F	3.2"
March	40°F	55°F	46°F	4.5"
April	43°F	61°F	50°F	2.9"
May	48°F	68°F	57°F	2.1"
June	53°F	73°F	62°F	1.6"
July	58°F	80°F	67°F	0.5"
August	58°F	80°F	67°F	0.9"
September	53°F	73°F	62°F	1.8"
October	47°F	62°F	53°F	3.9"
November	40°F	53°F	46°F	5.7"
December	36°F	47°F	41°F	4.5"

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Newcastle 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	Newcastle	Washington	National
Air quality index	45	36	42
Pollution index	1,081,430	4,541,850	2,726,193

Newcastle air quality

Measurement	Total
Days measured	365
Days with good air quality	236
Days with moderate air quality	127
Days w/ poor A.Q. for sensitive groups	2
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.000%
Benzene	0.010%
Carbon Tetrachloride	0.000%
Lead	0.000%
Mercury	0.000%

Average monthly Newcastle temperature with heat index

Newcastle monthly precipitation with daily maximum

Newcastle monthly snow depth with daily maximum

Newcastle monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Beaux Arts Village, WA	408	45	10.0%
Kent, WA	134,349	45	10.0%
Covington, WA	21,603	45	10.0%
Issaquah, WA	39,876	45	10.0%
Boulevard Park, WA	4,347	45	10.0%
Newcastle, WA	12,354	45	10.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Myrtle Grove, NC	12,355	34	32.0%
Wellesley, ON	12,358	n/a
Spring Lake, NC	12,346	41	18.0%
Lansing, KS	12,363	47	6.0%
Norton, OH	12,365	43	14.0%
Newcastle, WA	12,354	45	10.0%

Source: The Newcastle, WA 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.