TODAY AUG15
TEMPERATURE71
HUMIDITY87
PRESSURE29.93
WIND COND.290 4.7
  • 8968Wed
  • 9071Thu20%
  • 8869Fri50%70%
  • 8466Sat30%30%
  • 8265Sun40%40%
daynightWeather update from Lancaster, Lancaster Airport at

Clay 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
January26°F40°F32°F4.1"
February19°F38°F28°F2.9"
March29°F49°F39°F4.6"
April40°F63°F51°F6.6"
May47°F74°F61°F2.5"
June61°F84°F72°F9.0"
July64°F84°F74°F11.6"
August65°F84°F74°F4.1"
September57°F81°F69°F2.3"
October50°F69°F58°F8.8"
November34°F55°F44°F3.7"
December25°F40°F33°F5.2"

Did you know?

  • The highest monthly average temperature in Clay for August is 74 degrees.
  • The lowest monthly average temperature in Clay for February is 28 degrees.
  • The most monthly precipitation in Clay occurs in July with 11.6 inches.
  • The air quality index in Clay is 9% better than the national average.
  • The pollution index in Clay is 118% worse than the national average.

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Compare Clay, PA Weather To Other Cities

Clay 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.
IndexClayPennsylvaniaNational
Air quality index454550
Pollution index11,091,2004,327,9925,066,862

Clay air quality information

MeasurementTotal
Days measured365
Days with good air quality213
Days with moderate air quality144
Days w/ poor A.Q. for sensitive groups8
Days with unhealthy air quality

Clay air quality information

PollutantTotal
Arsenic0.010%
Benzene0.140%
Carbon Tetrachloride0.030%
Lead0.310%
Mercury0.004%

Average monthly Clay temperature with heat index

Clay monthly precipitation with daily maximum

Clay monthly snow depth with daily maximum

Clay monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Annville, PA4,8554314%
Jonestown CDP, PA794314%
Lebanon, PA25,6544314%
Newmanstown, PA2,6544314%
Pleasant Hill, PA2,6484314%
Clay, PA2,3794510%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Kentwood, LA2,3792844%
Old Orchard, PA2,378476%
Breckinridge Center, KY2,378484%
Cabool, MO2,3813922%
South Fulton, TN2,3773628%
Clay, PA2,3794510%
Source: The Clay, 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.