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Greencastle Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January3°F70°F34°F1.9"
February3°F68°F33°F1.1"
March10°F82°F42°F2.3"
April26°F93°F54°F3.4"
May35°F96°F62°F2.9"
June48°F95°F73°F4.1"
July55°F95°F76°F2.9"
August52°F97°F75°F2.6"
September41°F91°F68°F2.2"
October30°F90°F56°F2.8"
November17°F75°F46°F2.4"
December5°F70°F35°F3.5"

Did you know?

  • The highest monthly average temperature in Greencastle for July is 76 degrees.
  • The lowest monthly average temperature in Greencastle for February is 33 degrees.
  • The most monthly precipitation in Greencastle occurs in June with 4.1 inches.
  • The air quality index in Greencastle is 17% better than the national average.
  • The pollution index in Greencastle is 220% worse than the national average.

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Greencastle 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.
IndexGreencastlePennsylvaniaNational
Air quality index414550
Pollution index16,230,7004,327,9925,066,862

Greencastle air quality information

MeasurementTotal
Days measured363
Days with good air quality276
Days with moderate air quality84
Days w/ poor A.Q. for sensitive groups3
Days with unhealthy air quality

Greencastle air quality information

PollutantTotal
Arsenic0.010%
Benzene0.130%
Carbon Tetrachloride0.090%
Lead0.080%
Mercury0.020%

Average monthly Greencastle temperature with heat index

Greencastle monthly precipitation with daily maximum

Greencastle monthly snow depth with daily maximum

Greencastle monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Fort Loudon, PA9623628%
Mercersburg, PA1,4933628%
Scotland, PA8803628%
Guilford, PA3,0663628%
Mont Alto, PA1,7363628%
Greencastle, PA4,0394118%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
North Richmond, CA4,0394314%
Fremont, MI4,0383824%
Charleroi, PA4,0375612%
Hebron, IN4,0413138%
Heron Bay, GA4,042524%
Greencastle, PA4,0394118%
Source: The Greencastle, 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.