TODAY DEC22
TEMPERATURE49
HUMIDITY100
PRESSURE
WIND COND.
  • 6250Sun60%40%
  • 6651Mon30%
  • 6040Tue100%20%
  • 564150%
  • 5545Thu50%40%
daynightWeather update from SAN LUIS NWR at
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Weather Quick Facts

  • The highest monthly average temperature in Hilmar-Irwin for July is 80.2 degrees
  • The lowest monthly average temperature in Hilmar-Irwin for January is 46.9 degrees
  • The most monthly precipitation in Hilmar-Irwin occurs in January with 2.4 inches
  • The air quality index in Hilmar-Irwin is 16% worse than the national average
  • The pollution index in Hilmar-Irwin is 185% worse than the national average

Compare Hilmar-Irwin, CA Weather

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      Hilmar-Irwin 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°F58°F47°F2.4"
      February42°F64°F52°F1.9"
      March46°F70°F57°F1.7"
      April49°F76°F61°F1.3"
      May54°F85°F69°F0.4"
      June60°F93°F76°F0.2"
      July64°F98°F80°F0.0"
      August63°F96°F78°F0.0"
      September59°F91°F74°F0.1"
      October52°F80°F64°F0.7"
      November44°F68°F54°F1.1"
      December38°F58°F47°F2.3"

      Hilmar-Irwin 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.
      IndexHilmar-IrwinCaliforniaNational
      Air quality index495542
      Pollution index7,774,44010,473,1902,726,193

      Hilmar-Irwin air quality

      MeasurementTotal
      Days measured365
      Days with good air quality201
      Days with moderate air quality141
      Days w/ poor A.Q. for sensitive groups22
      Days with unhealthy air quality1

      Air quality details

      PollutantTotal
      Arsenic0.030%
      Benzene0.090%
      Carbon Tetrachloride0.000%
      Lead0.050%
      Mercury0.040%

      Average monthly Hilmar-Irwin temperature with heat index

      Hilmar-Irwin monthly precipitation with daily maximum

      Hilmar-Irwin monthly snow depth with daily maximum

      Hilmar-Irwin monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Cressey, CA243484.0%
      Atwater, CA30,336484.0%
      Delhi, CA11,837484.0%
      Livingston, CA14,392484.0%
      McSwain, CA4,429484.0%
      Hilmar-Irwin, CA5,937492.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Portland, CT5,9374118.0%
      Pevely, MO5,937548.0%
      Annapolis, Subd. A, NS5,937n/a 
      Brownfields, LA5,9364510.0%
      Lake Mills, WI5,9363726.0%
      Hilmar-Irwin, CA5,937492.0%
      Source: The Hilmar-Irwin, 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.