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New Castle 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
January22°F37°F29°F8.1"
February18°F34°F26°F4.1"
March32°F52°F41°F5.7"
April40°F64°F51°F7.1"
May51°F75°F63°F2.9"
June62°F84°F73°F4.0"
July61°F84°F72°F4.9"
August64°F85°F74°F8.8"
September57°F81°F68°F4.3"
October49°F68°F58°F5.4"
November34°F53°F43°F6.2"
December22°F36°F29°F5.0"

Did you know?

  • The highest monthly average temperature in New Castle for August is 74 degrees.
  • The lowest monthly average temperature in New Castle for February is 26 degrees.
  • The most monthly precipitation in New Castle occurs in August with 8.8 inches.
  • The air quality index in New Castle is 633% worse than the national average.
  • The pollution index in New Castle is 61% better than the national average.

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Compare New Castle, IN Weather To Other Cities

New Castle 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.
IndexNew CastleIndianaNational
Air quality index3655650
Pollution index1,974,0403,773,6185,066,862

New Castle air quality information

MeasurementTotal
Days measured120
Days with good air quality85
Days with moderate air quality35
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

New Castle air quality information

PollutantTotal
Arsenic0.002%
Benzene0.030%
Carbon Tetrachloride0.002%
Lead0.002%
Mercury0.000%

Average monthly New Castle temperature with heat index

New Castle monthly precipitation with daily maximum

New Castle monthly snow depth with daily maximum

New Castle monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Milton, IN412688%
East Germantown, IN308688%
Daleville, IN1,5564216%
Markleville, IN4644216%
Chesterfield, IN2,5624216%
New Castle, IN17,634365630%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Wallingford Center, CT17,634492%
Westerly, RI17,6324412%
Helena, AL17,63050= 100
Maryland City, MD17,647468%
Redland, MD17,655492%
New Castle, IN17,634365630%
Source: The New Castle, IN 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.