TODAY DEC10
TEMPERATURE20
HUMIDITY96
PRESSURE30.25
WIND COND.260 10.3
  • 2819Tue
  • 3021Wed20%
  • 3118Thu
  • 3118Fri
  • 3424Sat
daynightWeather update from Mason City, Mason City Municipal Airport at

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Grafton 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
January9°F25°F17°F0.7"
February11°F29°F20°F1.1"
March25°F44°F34°F2.2"
April36°F60°F47°F5.1"
May48°F71°F59°F5.0"
June58°F81°F69°F5.4"
July61°F84°F72°F4.2"
August59°F82°F70°F4.0"
September51°F76°F62°F4.3"
October38°F62°F49°F2.7"
November26°F47°F36°F1.5"
December13°F29°F21°F1.4"

Did you know?

  • The highest monthly average temperature in Grafton for July is 72 degrees.
  • The lowest monthly average temperature in Grafton for January is 17 degrees.
  • The most monthly precipitation in Grafton occurs in June with 5.4 inches.
  • The air quality index in Grafton is 63% better than the national average.
  • The pollution index in Grafton is 71% better than the national average.

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Compare Grafton, IA Weather To Other Cities

Grafton 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.
IndexGraftonIowaNational
Air quality index183950
Pollution index1,444,3801,643,8365,066,862

Grafton air quality information

MeasurementTotal
Days measured334
Days with good air quality332
Days with moderate air quality2
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

Grafton air quality information

PollutantTotal
Arsenic0.001%
Benzene0.040%
Carbon Tetrachloride0.002%
Lead0.010%
Mercury0.001%

Average monthly Grafton temperature with heat index

Grafton monthly precipitation with daily maximum

Grafton monthly snow depth with daily maximum

Grafton monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Carpenter, IA1021864%
Mitchell, IA1711864%
Orchard, IA501864%
Portland, IA271864%
Stacyville, IA5031864%
Grafton, IA3551864%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Cantu Addition, TX3553138%
Whiteface, TX3552648%
Walterhill, TN3554510%
Bethpage, TN3554510%
Keys, OK3553628%
Grafton, IA3551864%
Source: The Grafton, 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.