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St. Johns 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
January18°F50°F33°F0.5"
February23°F57°F40°F0.2"
March29°F65°F47°F0.3"
April35°F72°F54°F0.2"
May43°F80°F63°F0.4"
June54°F92°F75°F0.2"
July62°F92°F76°F1.8"
August59°F89°F73°F2.1"
September51°F84°F67°F1.0"
October38°F74°F56°F0.6"
November27°F63°F44°F0.4"
December21°F50°F34°F0.5"

Did you know?

  • The highest monthly average temperature in St. Johns for July is 76 degrees.
  • The lowest monthly average temperature in St. Johns for January is 33 degrees.
  • The most monthly precipitation in St. Johns occurs in August with 2.1 inches.
  • The air quality index in St. Johns is 15% better than the national average.
  • The pollution index in St. Johns is 83% better than the national average.

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St. Johns 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.
IndexSt. JohnsArizonaNational
Air quality index425750
Pollution index841,2555,576,4945,066,862

St. Johns air quality information

MeasurementTotal
Days measured365
Days with good air quality308
Days with moderate air quality57
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

St. Johns air quality information

PollutantTotal
Arsenic0.000%
Benzene0.020%
Carbon Tetrachloride0.002%
Lead0.000%
Mercury0.000%

Average monthly St. Johns temperature with heat index

St. Johns monthly precipitation with daily maximum

St. Johns monthly snow depth with daily maximum

St. Johns monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Concho, AZ1814216%
St. Johns CDP, AZ7264216%
St. Johns, AZ3,5424216%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Teague, TX3,5424020%
Loyalhanna, PA3,5424510%
Benson, NC3,5424314%
Hesston, KS3,5413922%
Calcutta, OH3,543688%
St. Johns, AZ3,5424216%
Source: The St. Johns, AZ 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.