TODAY FEB25
TEMPERATURE54
HUMIDITY15
PRESSURE
WIND COND.37 8
  • 5937Thu
  • 5938Fri
  • 5838Sat
  • 6240Sun
  • 6141Mon
daynightWeather update from READER RANCH at

Key findings

  • The highest monthly average temperature in Penn Valley for July is 79 degrees
  • The lowest monthly average temperature in Penn Valley for December is 46 degrees
  • The most monthly precipitation in Penn Valley occurs in January with 10.1 inches
  • The air quality index in Penn Valley is 12% better than the national average
  • The pollution index in Penn Valley is 15% better than the national average

Compare Penn Valley, CA Weather

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      Penn 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
      January38°F57°F47°F10.1"
      February41°F62°F51°F8.0"
      March44°F67°F55°F8.4"
      April46°F74°F59°F4.6"
      May53°F83°F68°F2.6"
      June58°F91°F75°F2.6"
      July62°F96°F79°F0.2"
      August60°F95°F77°F0.4"
      September57°F90°F73°F1.3"
      October50°F79°F63°F4.8"
      November43°F65°F53°F7.5"
      December37°F56°F46°F9.8"

      Penn 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.
      IndexPenn ValleyCaliforniaNational
      Air quality index445550
      Pollution index4,289,31018,106,7265,066,862

      Penn Valley air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality239
      Days with moderate air quality124
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Penn Valley air quality information

      PollutantTotal
      Arsenic0.050%
      Benzene0.070%
      Carbon Tetrachloride0.001%
      Lead0.060%
      Mercury0.010%

      Average monthly Penn Valley temperature with heat index

      Penn Valley monthly precipitation with daily maximum

      Penn Valley monthly snow depth with daily maximum

      Penn Valley monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Lake Wildwood, CA5,2894412%
      North San Juan, CA2934412%
      Lake of the Pines, CA3,9364412%
      Dobbins, CA7104412%
      Nevada City, CA3,1174412%
      Penn Valley, CA1,6074412%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Point of Rocks, MD1,6074020%
      Robersonville, NC1,6063824%
      Nashville, MI1,6063628%
      Knightsen, CA1,6064510%
      Bennington, NE1,6084020%
      Penn Valley, CA1,6074412%
      Source: The Penn Valley, CA 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.