St. Joseph, IA Weather - Forecast & Monthly Averages

TEMPERATURE	34
HUMIDITY	100
PRESSURE	102780
WIND COND.	220 5.4

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Weather Quick Facts

The highest monthly average temperature in St. Joseph for July is 74.6 degrees
The lowest monthly average temperature in St. Joseph for January is 18.7 degrees
The most monthly precipitation in St. Joseph occurs in August with 17.3 inches
The air quality index in St. Joseph is 64% better than the national average
The pollution index in St. Joseph is 84% better than the national average

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St. Joseph 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	11°F	29°F	19°F	0.5"
February	15°F	32°F	22°F	3.0"
March	29°F	50°F	37°F	2.2"
April	39°F	63°F	50°F	7.2"
May	51°F	74°F	61°F	8.1"
June	62°F	84°F	72°F	8.2"
July	64°F	87°F	75°F	9.1"
August	63°F	83°F	72°F	17.3"
September	56°F	81°F	66°F	7.3"
October	44°F	68°F	53°F	4.4"
November	29°F	51°F	37°F	4.8"
December	12°F	27°F	19°F	3.9"

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St. Joseph 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	St. Joseph	Iowa	National
Air quality index	15	39	42
Pollution index	426,616	1,154,535	2,726,193

St. Joseph air quality

Measurement	Total
Days measured	118
Days with good air quality	118
Days with moderate air quality	0
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

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

Average monthly St. Joseph temperature with heat index

St. Joseph monthly precipitation with daily maximum

St. Joseph monthly snow depth with daily maximum

St. Joseph monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Algona, IA	5,415	15	70.0%
Sexton, IA	0	15	70.0%
West Bend, IA	651	15	70.0%
Livermore, IA	434	15	70.0%
Irvington, IA	41	15	70.0%
St. Joseph, IA	122	15	70.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Nunam Iqua, AK	122	31	38.0%
Pollard, AL	122	41	18.0%
Pineville, AR	122	36	28.0%
Whispering Pines, AZ	122	60	20.0%
Gay, GA	122	42	16.0%
St. Joseph, IA	122	15	70.0%

Source: The St. Joseph, 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.