Ketchikan, AK Weather - Forecast & Monthly Averages

TEMPERATURE	60
HUMIDITY	24
PRESSURE	102100
WIND COND.	130 11.2

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Weather Quick Facts

The highest monthly average temperature in Ketchikan for August is 58.7 degrees
The lowest monthly average temperature in Ketchikan for December is 35.4 degrees
The most monthly precipitation in Ketchikan occurs in October with 20.2 inches
The air quality index in Ketchikan is 52% better than the national average
The pollution index in Ketchikan is 84% better than the national average

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Ketchikan 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	32°F	41°F	37°F	18.0"
February	31°F	42°F	36°F	13.3"
March	32°F	44°F	38°F	13.5"
April	37°F	50°F	43°F	12.0"
May	43°F	58°F	50°F	8.8"
June	49°F	63°F	55°F	7.3"
July	53°F	65°F	58°F	9.2"
August	53°F	66°F	59°F	11.4"
September	49°F	60°F	54°F	16.1"
October	42°F	52°F	46°F	20.2"
November	35°F	43°F	39°F	16.0"
December	31°F	40°F	35°F	14.5"

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Ketchikan 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	Ketchikan	Alaska	National
Air quality index	20	30	42
Pollution index	441,733	11,243,194	2,726,193

Ketchikan air quality information

Measurement	Total
Days measured	362
Days with good air quality	308
Days with moderate air quality	51
Days w/ poor A.Q. for sensitive groups	3
Days with unhealthy air quality	0

Ketchikan air quality information

Pollutant	Total
Arsenic	0.000%
Benzene	0.010%
Carbon Tetrachloride	0.001%
Lead	0.000%
Mercury	0.000%

Average monthly Ketchikan temperature with heat index

Ketchikan monthly precipitation with daily maximum

Ketchikan monthly snow depth with daily maximum

Ketchikan monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Saxman, AK	328	20	60.0%
Ketchikan, AK	8,230	20	60.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Drayton Valley, AB	8,231	n/a
Mahtomedi, MN	8,232	46	8.0%
St. Marys, OH	8,227	39	22.0%
Brazil, IN	8,225	45	10.0%
Pewaukee village, WI	8,225	44	12.0%
Ketchikan, AK	8,230	20	60.0%

Source: The Ketchikan, AK 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.