TODAY AUG16
TEMPERATURE68
HUMIDITY98
PRESSURE29.91
WIND COND.
  • 8264Thu40%50%
  • 8364Fri
  • 8564Sat
  • 8465Sun20%
  • 7859Mon50%50%
daynightWeather update from Vinton, Vinton Veterans Memorial Airpark Airport at

Garrison 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
January13°F30°F21°F0.8"
February15°F33°F23°F2.0"
March29°F48°F38°F3.9"
April40°F62°F50°F4.8"
May50°F74°F61°F6.0"
June61°F83°F71°F8.3"
July64°F85°F74°F7.5"
August61°F82°F71°F5.6"
September53°F77°F64°F4.9"
October42°F64°F52°F7.5"
November31°F49°F39°F5.2"
December19°F34°F26°F4.0"

Did you know?

  • The highest monthly average temperature in Garrison for July is 74 degrees.
  • The lowest monthly average temperature in Garrison for January is 21 degrees.
  • The most monthly precipitation in Garrison occurs in June with 8.3 inches.
  • The air quality index in Garrison is 13% better than the national average.
  • The pollution index in Garrison is 91% better than the national average.

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Compare Garrison, IA Weather To Other Cities

Garrison 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.
IndexGarrisonIowaNational
Air quality index433950
Pollution index416,1141,643,8365,066,862

Garrison 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

Garrison air quality information

PollutantTotal
Arsenic0.000%
Benzene0.004%
Carbon Tetrachloride0.001%
Lead0.000%
Mercury0.000%

Average monthly Garrison temperature with heat index

Garrison monthly precipitation with daily maximum

Garrison monthly snow depth with daily maximum

Garrison monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Urbana, IA1,4444216%
Van Horne, IA7824216%
Atkins, IA1,7134216%
Elberon, IA1934216%
Newhall, IA9854216%
Garrison, IA3524314%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Hunter, NY3523628%
Norman, AR3523628%
Cane Beds, AZ3524118%
Bunceton, MO352375650%
Granton, WI3523628%
Garrison, IA3524314%
Source: The Garrison, 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.