TODAY JUN21
TEMPERATURE55
HUMIDITY100
PRESSURE29.84
WIND COND.30 4.7
  • 685680%60%
  • 6856Fri30%20%
  • 7358Sat20%
  • 7756Sun
  • 7658Mon
daynightWeather update from Waukesha County Airport at

Merton 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
January-9°F59°F25°Fn/a
February-15°F52°F23°Fn/a
March5°F79°F34°Fn/a
April19°F82°F48°Fn/a
May34°F90°F57°Fn/a
June45°F95°F68°Fn/a
July48°F95°F71°Fn/a
August50°F93°F70°Fn/a
September37°F91°F64°Fn/a
October25°F86°F52°F0.0"
November12°F73°F40°F0.0"
December-2°F52°F26°Fn/a

Did you know?

  • The highest monthly average temperature in Merton for July is 71 degrees.
  • The lowest monthly average temperature in Merton for February is 23 degrees.
  • The most monthly precipitation in Merton occurs in November with 0 inches.
  • The air quality index in Merton is 9% better than the national average.
  • The pollution index in Merton is 59% better than the national average.

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Compare Merton, WI Weather To Other Cities

Merton 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.
IndexMertonWisconsinNational
Air quality index456950
Pollution index2,032,3703,316,8775,066,862

Merton air quality information

MeasurementTotal
Days measured365
Days with good air quality211
Days with moderate air quality154
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Merton air quality information

PollutantTotal
Arsenic0.002%
Benzene0.030%
Carbon Tetrachloride0.001%
Lead0.000%
Mercury0.002%

Average monthly Merton temperature with heat index

Merton monthly precipitation with daily maximum

Merton monthly snow depth with daily maximum

Merton monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
North Prairie, WI2,3913628%
Dousman, WI2,4933628%
Lac La Belle, WI3123726%
Neosho, WI6673726%
Oconomowoc Lake, WI5473726%
Merton, WI3,5354510%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Ranlo, NC3,5353628%
Hominy, OK3,535484%
Warsaw, NY3,5364118%
Bardonia, NY3,536536%
Marshall, IL3,53650= 100
Merton, WI3,5354510%
Source: The Merton, 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.