TODAY DEC07
TEMPERATURE41
HUMIDITY61
PRESSURE30.13
WIND COND.200 16.1
  • 4723Sun
  • 3111Mon30%
  • 225Tue
  • 2111Wed
  • 3422Thu
daynightWeather update from Atlantic at
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Walnut 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
January14°F37°F24°F0.6"
February16°F41°F27°F0.9"
March29°F56°F41°F1.5"
April40°F67°F53°F3.8"
May50°F77°F63°F5.2"
June62°F87°F74°F4.9"
July66°F91°F78°F3.1"
August64°F88°F75°F6.1"
September55°F82°F67°F3.7"
October42°F69°F54°F3.0"
November29°F55°F41°F1.0"
December17°F39°F27°F1.7"

Did you know?

  • The highest monthly average temperature in Walnut for July is 78 degrees.
  • The lowest monthly average temperature in Walnut for January is 24 degrees.
  • The most monthly precipitation in Walnut occurs in August with 6.1 inches.
  • The air quality index in Walnut is 3% better than the national average.
  • The pollution index in Walnut is 14% better than the national average.

Compare Walnut, IA Weather To Other Cities

Walnut 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.
IndexWalnutIowaNational
Air quality index483950
Pollution index4,349,9301,643,8365,066,862

Walnut air quality information

MeasurementTotal
Days measured365
Days with good air quality197
Days with moderate air quality164
Days w/ poor A.Q. for sensitive groups4
Days with unhealthy air quality

Walnut air quality information

PollutantTotal
Arsenic0.210%
Benzene0.040%
Carbon Tetrachloride0.004%
Lead0.100%
Mercury0.160%

Average monthly Walnut temperature with heat index

Walnut monthly precipitation with daily maximum

Walnut monthly snow depth with daily maximum

Walnut monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Elk Horn, IA532484%
Kimballton, IA339484%
Shelby, IA654484%
Atlantic, IA6,817484%
Hancock, IA193484%
Walnut, IA706484%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Morrison, TN7063334%
Belvoir, NC7063236%
Phelps, KY706295490%
Westminster, TX706548%
Delta, PA7064510%
Walnut, IA706484%
Source: The Walnut, 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.
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