Savanna, IL Weather - Forecast & Monthly Averages

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TEMPERATURE	46
HUMIDITY	56
PRESSURE	102100
WIND COND.	10 11.2

Weather Quick Facts

The highest monthly average temperature in Savanna for July is 74 degrees
The lowest monthly average temperature in Savanna for January is 22.8 degrees
The most monthly precipitation in Savanna occurs in June with 8.9 inches
The air quality index in Savanna is equal to the national average
The pollution index in Savanna is 42% better than the national average

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Savanna 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	15°F	32°F	23°F	2.0"
February	16°F	34°F	25°F	2.7"
March	31°F	50°F	39°F	5.0"
April	41°F	64°F	51°F	6.5"
May	51°F	75°F	62°F	4.6"
June	61°F	83°F	71°F	8.9"
July	64°F	85°F	74°F	4.5"
August	61°F	83°F	72°F	4.9"
September	54°F	78°F	65°F	3.6"
October	43°F	64°F	53°F	3.1"
November	32°F	50°F	40°F	2.9"
December	20°F	35°F	28°F	4.0"

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Savanna 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	Savanna	Illinois	National
Air quality index	42	41	42
Pollution index	1,592,910	3,148,694	2,726,193

Savanna air quality

Measurement	Total
Days measured	364
Days with good air quality	268
Days with moderate air quality	96
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.090%
Benzene	0.030%
Carbon Tetrachloride	0.000%
Lead	0.010%
Mercury	0.010%

Average monthly Savanna temperature with heat index

Savanna monthly precipitation with daily maximum

Savanna monthly snow depth with daily maximum

Savanna monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Preston, IA	1,045	42	16.0%
Spragueville, IA	115	42	16.0%
Sabula, IA	504	42	16.0%
Hanover, IL	737	42	16.0%
Mount Carroll, IL	1,557	42	16.0%
Savanna, IL	3,028	42	16.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Williston, SC	3,028	47	6.0%
Division No. 1, Subd. E, NL	3,028	n/a
Clermont, QC	3,028	n/a
Heritage Lake, IN	3,027	54	8.0%
Marshall, VA	3,027	38	24.0%
Savanna, IL	3,028	42	16.0%

Source: The Savanna, 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.