Norwalk, IA Weather - Forecast & Monthly Averages

TEMPERATURE	31
HUMIDITY	92
PRESSURE	101460
WIND COND.	320 35.3

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Weather Quick Facts

The highest monthly average temperature in Norwalk for July is 77.4 degrees
The lowest monthly average temperature in Norwalk for January is 23.5 degrees
The most monthly precipitation in Norwalk occurs in June with 6.5 inches
The air quality index in Norwalk is 7% better than the national average
The pollution index in Norwalk is 242% worse than the national average

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Norwalk 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	14°F	35°F	23°F	0.9"
February	17°F	39°F	26°F	1.2"
March	30°F	54°F	41°F	2.2"
April	41°F	67°F	53°F	4.9"
May	51°F	76°F	63°F	4.9"
June	62°F	86°F	74°F	6.5"
July	66°F	89°F	77°F	4.2"
August	64°F	87°F	75°F	5.1"
September	56°F	81°F	68°F	3.7"
October	43°F	68°F	55°F	3.2"
November	31°F	54°F	42°F	1.8"
December	18°F	38°F	27°F	2.1"

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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	Iowa	National
Air quality index	39	39	42
Pollution index	9,310,160	1,154,535	2,726,193

Norwalk air quality

Measurement	Total
Days measured	365
Days with good air quality	306
Days with moderate air quality	59
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.010%
Benzene	0.110%
Carbon Tetrachloride	0.080%
Lead	0.030%
Mercury	0.010%

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	Population	Air Quality Index	National Avg.
Dallas Center, IA	1,710	39	22.0%
Indianola, IA	15,921	39	22.0%
Ackworth, IA	212	39	22.0%
Des Moines, IA	215,408	39	22.0%
Waukee, IA	22,598	39	22.0%
Norwalk, IA	11,467	39	22.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Georgian Bluffs, ON	11,464	n/a
Milford, DE	11,463	42	16.0%
Piedmont, CA	11,454	40	20.0%
Lyndon, KY	11,451	49	2.0%
Madison Heights, VA	11,447	26	48.0%
Norwalk, IA	11,467	39	22.0%

Source: The Norwalk, IA 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.