TODAY APR20
TEMPERATURE76
HUMIDITY15
PRESSURE101120.4
WIND COND.90 5.4
  • 7548Sat
  • 7853Sun
  • 8354Mon
  • 8354Tue
  • 8153Wed
daynightWeather update from USGS/NPS Building - Moab at
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Weather Quick Facts

  • The highest monthly average temperature in Castle Valley for July is 84.1 degrees
  • The lowest monthly average temperature in Castle Valley for December is 27.3 degrees
  • The most monthly precipitation in Castle Valley occurs in August with 3.4 inches
  • The air quality index in Castle Valley is 5% worse than the national average
  • The pollution index in Castle Valley is 120% worse than the national average

Compare Castle Valley, UT Weather

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      Castle Valley Average Temperature

      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
      January21°F43°F31°F2.6"
      February26°F51°F38°F1.5"
      March30°F61°F45°F1.3"
      April38°F70°F54°F1.4"
      May47°F81°F65°F0.8"
      June55°F91°F74°F2.2"
      July65°F100°F84°F1.3"
      August63°F93°F78°F3.4"
      September53°F84°F69°F2.7"
      October40°F70°F55°F2.5"
      November26°F57°F41°F0.9"
      December16°F39°F27°F3.1"

      Castle Valley 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.
      IndexCastle ValleyUtahNational
      Air quality index444542
      Pollution index5,993,5003,340,3692,726,193

      Castle Valley air quality information

      MeasurementTotal
      Days measured364
      Days with good air quality289
      Days with moderate air quality75
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Castle Valley air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.130%
      Carbon Tetrachloride0.000%
      Lead0.004%
      Mercury0.000%

      Average monthly Castle Valley temperature with heat index

      Castle Valley monthly precipitation with daily maximum

      Castle Valley monthly snow depth with daily maximum

      Castle Valley monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Spanish Valley, UT4724412.0%
      Moab, UT5,3034412.0%
      Castle Valley, UT4334412.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Birdseye, IN433688.0%
      Waverly, KY4334510.0%
      Kaleva, MI4333628.0%
      The Silos, MT4334020.0%
      Morral, OH4334118.0%
      Castle Valley, UT4334412.0%
      Source: The Castle Valley, 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.