TODAY AUG14
TEMPERATURE78
HUMIDITY24
PRESSURE29.97
WIND COND.170 9.2
  • 9366Tue
  • 9266Wed20%
  • 9164Thu
  • 9264Fri
  • 8760Sat
daynightWeather update from Ogden-Hinckley Airport at

Roy 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
January19°F35°F27°F1.8"
February26°F43°F34°F1.3"
March33°F55°F43°F1.7"
April38°F62°F49°F2.3"
May46°F72°F58°F2.5"
June55°F85°F70°F1.1"
July65°F94°F79°F0.3"
August63°F90°F76°F0.8"
September53°F80°F66°F1.5"
October42°F65°F52°F1.7"
November32°F52°F40°F1.1"
December22°F37°F29°F1.7"

Did you know?

  • The highest monthly average temperature in Roy for July is 79 degrees.
  • The lowest monthly average temperature in Roy for January is 27 degrees.
  • The most monthly precipitation in Roy occurs in May with 2.5 inches.
  • The air quality index in Roy is 1% better than the national average.
  • The pollution index in Roy is 236% worse than the national average.

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Compare Roy, UT Weather To Other Cities

Roy 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.
IndexRoyUtahNational
Air quality index494550
Pollution index17,030,3006,755,1215,066,862

Roy air quality information

MeasurementTotal
Days measured365
Days with good air quality198
Days with moderate air quality126
Days w/ poor A.Q. for sensitive groups37
Days with unhealthy air quality4

Roy air quality information

PollutantTotal
Arsenic0.280%
Benzene0.230%
Carbon Tetrachloride0.000%
Lead0.360%
Mercury0.040%

Average monthly Roy temperature with heat index

Roy monthly precipitation with daily maximum

Roy monthly snow depth with daily maximum

Roy monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Farmington, UT21,983476%
Clearfield, UT30,483492%
Farr West, UT6,406492%
Huntsville, UT789492%
Marriott-Slaterville, UT1,784492%
Roy, UT37,853492%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Lima, OH37,8363040%
Gainesville, GA37,9064216%
Apache Junction, AZ37,7757448%
Chillum, MD37,773492%
Brookfield, WI37,9914510%
Roy, UT37,853492%
Source: The Roy, UT 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.