TODAY AUG16
TEMPERATURE77
HUMIDITY83
PRESSURE29.97
WIND COND.180 3.4
  • 8262Fri
  • 8364Sat
  • 8164Sun20%
  • 7557Mon60%50%
  • 7455Tue
daynightWeather update from Oelwein, Oelwein Municipal Airport at

Sumner 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
January12°F27°F19°F0.7"
February13°F29°F21°F0.7"
March29°F45°F36°F1.7"
April39°F60°F48°F2.8"
May50°F71°F60°F2.4"
June60°F80°F70°F5.1"
July62°F82°F72°F2.5"
August60°F79°F69°F2.3"
September53°F75°F63°F3.0"
October42°F61°F50°F2.8"
November29°F47°F37°F1.1"
December17°F31°F24°F1.8"

Did you know?

  • The highest monthly average temperature in Sumner for July is 72 degrees.
  • The lowest monthly average temperature in Sumner for January is 19 degrees.
  • The most monthly precipitation in Sumner occurs in June with 5.1 inches.
  • The air quality index in Sumner is 13% better than the national average.
  • The pollution index in Sumner is 89% better than the national average.

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Compare Sumner, IA Weather To Other Cities

Sumner 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.
IndexSumnerIowaNational
Air quality index433950
Pollution index530,4841,643,8365,066,862

Sumner air quality information

MeasurementTotal
Days measured365
Days with good air quality240
Days with moderate air quality122
Days w/ poor A.Q. for sensitive groups3
Days with unhealthy air quality

Sumner air quality information

PollutantTotal
Arsenic0.000%
Benzene0.010%
Carbon Tetrachloride0.001%
Lead0.002%
Mercury0.000%

Average monthly Sumner temperature with heat index

Sumner monthly precipitation with daily maximum

Sumner monthly snow depth with daily maximum

Sumner monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Denver, IA1,8144314%
Frederika, IA3014314%
Oelwein, IA6,1954314%
Stanley, IA1144314%
West Union, IA2,5924314%
Sumner, IA2,2054314%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Twin City, GA2,2054216%
Clinton, WI2,2063824%
Effort, PA2,2063922%
Poquonock Bridge, CT2,2064412%
Westby, WI2,2044020%
Sumner, IA2,2054314%
Source: The Sumner, IA 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.