TODAY AUG20
TEMPERATURE69
HUMIDITY93
PRESSURE29.8
WIND COND.80 13.9
  • 7452Tue
  • 7753Wed
  • 7861Thu
  • 7863Fri60%40%
  • 8565Sat
daynightWeather update from Waterloo, Waterloo Municipal Airport at

Shell Rock 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
January9°F29°F19°F1.3"
February11°F33°F22°F1.2"
March25°F49°F36°F1.9"
April36°F63°F49°F5.0"
May47°F74°F60°F4.8"
June58°F83°F71°F6.5"
July61°F86°F74°F4.9"
August58°F84°F71°F4.0"
September51°F79°F64°F3.4"
October39°F65°F51°F3.2"
November27°F50°F38°F1.8"
December14°F33°F23°F2.1"

Did you know?

  • The highest monthly average temperature in Shell Rock for July is 74 degrees.
  • The lowest monthly average temperature in Shell Rock for January is 19 degrees.
  • The most monthly precipitation in Shell Rock occurs in June with 6.5 inches.
  • The air quality index in Shell Rock is 13% better than the national average.
  • The pollution index in Shell Rock is 79% better than the national average.

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Compare Shell Rock, IA Weather To Other Cities

Shell Rock 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.
IndexShell RockIowaNational
Air quality index433950
Pollution index1,013,9601,643,8365,066,862

Shell Rock 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

Shell Rock air quality information

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

Average monthly Shell Rock temperature with heat index

Shell Rock monthly precipitation with daily maximum

Shell Rock monthly snow depth with daily maximum

Shell Rock monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Greene, IA1,1151864%
Cedar Falls, IA40,8284314%
Plainfield, IA5054314%
Clarksville, IA1,2764314%
Janesville, IA7954314%
Shell Rock, IA1,2544314%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Dexter, NM1,2542354%
Wildwood, TX1,2544412%
Clymer, PA1,2533628%
Bellefonte, DE1,2535714%
Kamiah, ID1,2553138%
Shell Rock, IA1,2544314%
Source: The Shell Rock, 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.