Lewistown, IL Weather - Forecast & Monthly Averages

TEMPERATURE	40
HUMIDITY	76
PRESSURE	102200
WIND COND.	340 18.4

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Weather Quick Facts

The highest monthly average temperature in Lewistown for July is 74.7 degrees
The lowest monthly average temperature in Lewistown for January is 25.9 degrees
The most monthly precipitation in Lewistown occurs in June with 10.8 inches
The air quality index in Lewistown is 3% better than the national average
The pollution index in Lewistown is 63% better than the national average

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Lewistown 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	18°F	35°F	26°F	3.6"
February	19°F	38°F	27°F	3.0"
March	33°F	53°F	42°F	3.4"
April	43°F	67°F	54°F	5.4"
May	53°F	76°F	64°F	7.4"
June	63°F	84°F	73°F	10.8"
July	65°F	85°F	75°F	8.6"
August	63°F	84°F	73°F	8.8"
September	55°F	80°F	66°F	8.0"
October	44°F	68°F	55°F	8.3"
November	33°F	54°F	42°F	6.4"
December	23°F	38°F	30°F	5.1"

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Lewistown 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	Lewistown	Illinois	National
Air quality index	41	41	42
Pollution index	1,001,710	3,148,694	2,726,193

Lewistown air quality information

Measurement	Total
Days measured	365
Days with good air quality	285
Days with moderate air quality	78
Days w/ poor A.Q. for sensitive groups	2
Days with unhealthy air quality	0

Lewistown air quality information

Pollutant	Total
Arsenic	0.004%
Benzene	0.040%
Carbon Tetrachloride	0.000%
Lead	0.010%
Mercury	0.020%

Average monthly Lewistown temperature with heat index

Lewistown monthly precipitation with daily maximum

Lewistown monthly snow depth with daily maximum

Lewistown monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Bath, IL	300	40	20.0%
Astoria, IL	1,154	40	20.0%
Cuba, IL	1,066	41	18.0%
Banner, IL	207	41	18.0%
Liverpool, IL	128	41	18.0%
Lewistown, IL	2,021	41	18.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Gotha, FL	2,021	39	22.0%
Suffield Depot, CT	2,020	40	20.0%
Mountain Lake, MN	2,022	32	36.0%
Creston, OH	2,020	43	14.0%
Maple Creek, SK	2,020	n/a
Lewistown, IL	2,021	41	18.0%

Source: The Lewistown, 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.