Norwalk, CA Weather Forecast & Monthly Average Temperatures

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Norwalk Average Weather

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	46°F	72°F	57°F	2.3"
February	48°F	72°F	58°F	1.7"
March	51°F	75°F	61°F	1.0"
April	54°F	76°F	64°F	0.5"
May	58°F	78°F	66°F	0.3"
June	62°F	81°F	70°F	0.0"
July	66°F	86°F	74°F	0.1"
August	66°F	88°F	75°F	0.0"
September	65°F	88°F	74°F	0.2"
October	59°F	83°F	69°F	0.4"
November	52°F	77°F	63°F	0.6"
December	45°F	70°F	56°F	2.5"

Did you know?

The highest monthly average temperature in Norwalk for August is 75 degrees.
The lowest monthly average temperature in Norwalk for December is 56 degrees.
The most monthly precipitation in Norwalk occurs in December with 2.5 inches.
The air quality index in Norwalk is 48% worse than the national average.
The pollution index in Norwalk is 2652% worse than the national average.

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Norwalk 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	Norwalk	California	National
Air quality index	74	55	50
Pollution index	139,490,000	18,106,726	5,066,862

Norwalk air quality information

Measurement	Total
Days measured	365
Days with good air quality	25
Days with moderate air quality	260
Days w/ poor A.Q. for sensitive groups	76
Days with unhealthy air quality	4

Norwalk air quality information

Pollutant	Total
Arsenic	0.200%
Benzene	0.950%
Carbon Tetrachloride	0.080%
Lead	1.320%
Mercury	0.440%

Average monthly Norwalk temperature with heat index

Norwalk monthly precipitation with daily maximum

Norwalk monthly snow depth with daily maximum

Norwalk monthly wind speed information

Nearby cities with good air quality

City, State	Population	Air Quality Index	National Avg.
Alondra Park, CA	8,146	74	48%
Baldwin Park, CA	76,511	74	48%
East Los Angeles, CA	124,191	74	48%
El Monte, CA	115,665	74	48%
Gardena, CA	59,898	74	48%
Norwalk, CA	106,360	74	48%

Cities with similar population

City, State	Population	Air Quality Index	National Avg.
Pearland, TX	106,238	52	4%
Palm Bay, FL	106,573	35	30%
Everett, WA	106,580	49	2%
Highlands Ranch, CO	106,596	54	8%
North Charleston, SC	106,113	36	28%
Norwalk, CA	106,360	74	48%

Source: The Norwalk, CA 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.