San Jose, IL Weather Forecast & Monthly Average Temperatures

TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.

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San Jose 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	20°F	37°F	28°F	2.6"
February	21°F	39°F	29°F	3.2"
March	34°F	55°F	43°F	4.1"
April	44°F	67°F	55°F	6.7"
May	54°F	76°F	65°F	4.6"
June	63°F	85°F	74°F	8.5"
July	66°F	87°F	76°F	11.2"
August	64°F	86°F	74°F	8.1"
September	56°F	80°F	67°F	11.5"
October	46°F	68°F	56°F	6.3"
November	34°F	54°F	43°F	5.1"
December	25°F	40°F	32°F	5.3"

Did you know?

The highest monthly average temperature in San Jose for July is 76 degrees.
The lowest monthly average temperature in San Jose for January is 28 degrees.
The most monthly precipitation in San Jose occurs in September with 11.5 inches.
The air quality index in San Jose is 3% better than the national average.
The pollution index in San Jose is 74% better than the national average.

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San Jose 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	San Jose	Illinois	National
Air quality index	48	41	50
Pollution index	1,277,890	3,347,295	5,066,862

San Jose air quality information

Measurement	Total
Days measured	365
Days with good air quality	207
Days with moderate air quality	132
Days w/ poor A.Q. for sensitive groups	21
Days with unhealthy air quality	5

San Jose air quality information

Pollutant	Total
Arsenic	0.010%
Benzene	0.050%
Carbon Tetrachloride	0.000%
Lead	0.010%
Mercury	0.002%

Average monthly San Jose temperature with heat index

San Jose monthly precipitation with daily maximum

San Jose monthly snow depth with daily maximum

San Jose monthly wind speed information

Nearby cities with good air quality

City, State	Population	Air Quality Index	National Avg.
Middletown, IL	323	35	30%
Lincoln, IL	14,253	35	30%
New Holland, IL	187	35	30%
Easton, IL	376	35	30%
Mason City, IL	2,272	35	30%
San Jose, IL	645	48	4%

Cities with similar population

City, State	Population	Air Quality Index	National Avg.
Kewanna, IN	645	32	36%
Littletown, AZ	645	46	8%
York Haven, PA	645	45	10%
East Fork, AZ	645	42	16%
New Hope, TX	645	54	8%
San Jose, IL	645	48	4%

Source: The San Jose, IL 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.