TODAY APR18
TEMPERATURE46
HUMIDITY81
PRESSURE101860
WIND COND.320 11.2
  • 5335Fri
  • 5033Sat
  • 5737Sun
  • 6246Mon50%
  • 5837Tue60%40%
daynightWeather update from Milwaukee-Timmerman at
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Weather Quick Facts

  • The highest monthly average temperature in Mill Valley for July is 73 degrees
  • The lowest monthly average temperature in Mill Valley for January is 23.6 degrees
  • The most monthly precipitation in Mill Valley occurs in June with 5 inches
  • The air quality index in Mill Valley is 5% worse than the national average
  • The pollution index in Mill Valley is 530% worse than the national average

Compare Milwaukee, WI Weather

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      Mill 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
      January16°F32°F24°F1.7"
      February17°F34°F25°F1.7"
      March27°F46°F36°F2.5"
      April37°F58°F46°F4.3"
      May46°F69°F57°F3.5"
      June57°F79°F67°F5.0"
      July63°F84°F73°F3.7"
      August63°F82°F72°F3.2"
      September55°F75°F65°F2.9"
      October44°F63°F53°F3.2"
      November32°F51°F41°F2.4"
      December21°F37°F28°F2.6"

      Mill 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.
      IndexMill ValleyMilwaukeeWisconsin
      Air quality index444469
      Pollution index17,168,00017,168,0002,842,418

      Mill Valley air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality254
      Days with moderate air quality108
      Days w/ poor A.Q. for sensitive groups3
      Days with unhealthy air quality0

      Mill Valley air quality information

      PollutantTotal
      Arsenic0.030%
      Benzene0.160%
      Carbon Tetrachloride0.050%
      Lead0.160%
      Mercury0.150%

      Average monthly Mill Valley temperature with heat index

      Mill Valley monthly precipitation with daily maximum

      Mill Valley monthly snow depth with daily maximum

      Mill Valley monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Pewaukee village, WI8,2254412.0%
      Merton, WI3,7214412.0%
      New Berlin, WI39,7944412.0%
      Butler, WI1,9644412.0%
      Bayside, WI4,5304412.0%
      Milwaukee, WI592,6494412.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Baltimore, MD602,274468.0%
      Louisville, KY618,733492.0%
      Albuquerque, NM560,447536.0%
      Surrey, BC560,150n/a 
      Québec, QC548,244n/a 
      Milwaukee, WI592,6494412.0%
      Source: The Mill Valley, Milwaukee, WI 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.