TODAY JUN21
TEMPERATURE78
HUMIDITY90
PRESSURE29.81
WIND COND.260 5.8
  • 9276Fri40%40%
  • 9276Sat40%40%
  • 9576Sun
  • 9172Mon60%60%
  • 8770Tue60%
daynightWeather update from Wilmington International Airport at

St. Helena 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
January14°F76°F48°F2.5"
February19°F79°F48°F2.5"
March19°F86°F54°F2.8"
April28°F91°F63°F2.8"
May45°F91°F69°F4.3"
June57°F101°F77°F6.0"
July59°F98°F80°F7.1"
August62°F99°F80°F7.0"
September50°F93°F74°F9.3"
October32°F91°F65°F5.9"
November23°F81°F56°F4.6"
December19°F79°F50°F4.9"

Did you know?

  • The highest monthly average temperature in St. Helena for August is 80 degrees.
  • The lowest monthly average temperature in St. Helena for February is 48 degrees.
  • The most monthly precipitation in St. Helena occurs in September with 9.3 inches.
  • The air quality index in St. Helena is 21% better than the national average.
  • The pollution index in St. Helena is 81% better than the national average.

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Compare St. Helena, NC Weather To Other Cities

St. Helena 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. HelenaNorth CarolinaNational
Air quality index393550
Pollution index949,7523,848,9885,066,862

St. Helena air quality information

MeasurementTotal
Days measured364
Days with good air quality277
Days with moderate air quality87
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

St. Helena air quality information

PollutantTotal
Arsenic0.002%
Benzene0.020%
Carbon Tetrachloride0.002%
Lead0.010%
Mercury0.002%

Average monthly St. Helena temperature with heat index

St. Helena monthly precipitation with daily maximum

St. Helena monthly snow depth with daily maximum

St. Helena monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Hampstead, NC4,8903922%
Skippers Corner, NC2,7543922%
Atkinson, NC3593922%
Northchase, NC3,4613922%
Watha, NC1823922%
St. Helena, NC3463922%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Union Grove, TX3463334%
McHenry, KY3464020%
Wales, UT3464020%
Devers, TX3464412%
Taneyville, MO3463628%
St. Helena, NC3463922%
Source: The St. Helena, NC 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.