Bethlehem, PA Weather - Forecast & Monthly Averages

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TEMPERATURE	57
HUMIDITY	51
PRESSURE	101727.12
WIND COND.	180 5.5

Weather Quick Facts

The highest monthly average temperature in Bethlehem for July is 75.4 degrees
The lowest monthly average temperature in Bethlehem for January is 29.9 degrees
The most monthly precipitation in Bethlehem occurs in July with 6.4 inches
The air quality index in Bethlehem is equal to the national average
The pollution index in Bethlehem is 16% worse than the national average

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Bethlehem 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	40°F	30°F	3.5"
February	20°F	42°F	31°F	3.1"
March	28°F	53°F	40°F	3.4"
April	38°F	67°F	52°F	3.9"
May	48°F	76°F	62°F	3.7"
June	58°F	84°F	71°F	5.5"
July	63°F	88°F	75°F	6.4"
August	61°F	85°F	73°F	5.0"
September	54°F	80°F	66°F	4.5"
October	43°F	68°F	55°F	5.4"
November	33°F	56°F	44°F	2.8"
December	26°F	45°F	35°F	4.9"

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Bethlehem 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	Bethlehem	Pennsylvania	National
Air quality index	42	45	42
Pollution index	3,167,110	4,584,805	2,726,193

Bethlehem air quality

Measurement	Total
Days measured	365
Days with good air quality	275
Days with moderate air quality	86
Days w/ poor A.Q. for sensitive groups	4
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.002%
Benzene	0.040%
Carbon Tetrachloride	0.010%
Lead	0.030%
Mercury	0.001%

Average monthly Bethlehem temperature with heat index

Bethlehem monthly precipitation with daily maximum

Bethlehem monthly snow depth with daily maximum

Bethlehem monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Ackermanville, PA	412	34	32.0%
Belfast, PA	1,332	34	32.0%
Harmony, NJ	419	34	32.0%
Brainards, NJ	197	34	32.0%
Hutchinson, NJ	124	34	32.0%
Bethlehem, PA	77,503	42	16.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Buckeye, AZ	77,435	74	48.0%
St. Joseph, MO	77,382	43	14.0%
Missoula, MT	77,349	40	20.0%
Missouri City, TX	77,696	52	4.0%
Baytown, TX	77,698	52	4.0%
Bethlehem, PA	77,503	42	16.0%

Source: The Bethlehem, PA 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.