TODAY AUG15
TEMPERATURE70
HUMIDITY100
PRESSURE29.94
WIND COND.
  • 8261Wed20%
  • 8061Thu20%40%
  • 8161Fri20%
  • 8462Sat
  • 8262Sun30%
daynightWeather update from Algona at

St. Joseph 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
January11°F29°F19°F0.5"
February15°F32°F22°F3.0"
March29°F50°F37°F2.2"
April39°F63°F50°F7.2"
May51°F74°F61°F8.1"
June62°F84°F72°F8.2"
July64°F87°F75°F9.1"
August63°F83°F72°F17.3"
September56°F81°F66°F7.3"
October44°F68°F53°F4.4"
November29°F51°F37°F4.8"
December12°F27°F19°F3.9"

Did you know?

  • The highest monthly average temperature in St. Joseph for July is 75 degrees.
  • The lowest monthly average temperature in St. Joseph for January is 19 degrees.
  • The most monthly precipitation in St. Joseph occurs in August with 17.3 inches.
  • The air quality index in St. Joseph is 63% better than the national average.
  • The pollution index in St. Joseph is 91% better than the national average.

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Compare St. Joseph, IA Weather To Other Cities

St. Joseph 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. JosephIowaNational
Air quality index183950
Pollution index426,6161,643,8365,066,862

St. Joseph 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

St. Joseph air quality information

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

Average monthly St. Joseph temperature with heat index

St. Joseph monthly precipitation with daily maximum

St. Joseph monthly snow depth with daily maximum

St. Joseph monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Corwith, IA2301864%
Ottosen, IA631864%
St. Benedict, IA141864%
Whittemore, IA5041864%
Algona, IA5,4961864%
St. Joseph, IA1211864%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Port Mansfield, TX1214118%
Lincoln, IA1214314%
Ryder, ND1213432%
Gove City, KS121688%
Parkman, WY1213628%
St. Joseph, IA1211864%
Source: The St. Joseph, 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.