TODAY AUG14
TEMPERATURE63
HUMIDITY97
PRESSURE30.02
WIND COND.
  • 8768Tue
  • 8370Wed50%60%
  • 8268Thu70%60%
  • 8567Fri50%
  • 8465Sat50%30%
daynightWeather update from Terre Haute International Airport - Hulman Field at

Riley 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
January25°F41°F33°F8.9"
February20°F38°F29°F4.8"
March34°F56°F44°F3.7"
April41°F66°F53°F7.5"
May52°F77°F65°F5.1"
June62°F86°F74°F8.7"
July63°F86°F74°F9.6"
August66°F88°F76°F6.0"
September57°F83°F69°F12.3"
October48°F70°F58°F6.4"
November33°F56°F44°F6.5"
December25°F39°F31°F3.6"

Did you know?

  • The highest monthly average temperature in Riley for August is 76 degrees.
  • The lowest monthly average temperature in Riley for February is 29 degrees.
  • The most monthly precipitation in Riley occurs in September with 12.3 inches.
  • The air quality index in Riley is 0% worse than the national average.
  • The pollution index in Riley is 68% better than the national average.

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Riley 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.
IndexRileyIndianaNational
Air quality index505650
Pollution index1,601,6403,773,6185,066,862

Riley air quality information

MeasurementTotal
Days measured365
Days with good air quality186
Days with moderate air quality164
Days w/ poor A.Q. for sensitive groups15
Days with unhealthy air quality

Riley air quality information

PollutantTotal
Arsenic0.004%
Benzene0.030%
Carbon Tetrachloride0.002%
Lead0.040%
Mercury0.290%

Average monthly Riley temperature with heat index

Riley monthly precipitation with daily maximum

Riley monthly snow depth with daily maximum

Riley monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Clay City, IN82050= 100
Fontanet, IN36750= 100
New Goshen, IN43450= 100
Shelburn, IN1,28250= 100
Terre Haute, IN61,02150= 100
Riley, IN13650= 100

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Lewis and Clark Village, MO1364510%
Bear Lake, PA1363334%
San Pedro, NM1364118%
Ericson, NE136265430%
Logan, ND1363432%
Riley, IN13650= 100
Source: The Riley, 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.