TODAY AUG14
TEMPERATURE82
HUMIDITY79
PRESSURE30.02
WIND COND.190 5.8
  • 9280Wed20%20%
  • 9280Thu20%20%
  • 9280Fri20%20%
  • 9180Sat20%20%
  • 9180Sun20%20%
daynightWeather update from Houston / Ellington at

San Leon 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
January49°F63°F56°F3.7"
February52°F66°F58°F2.2"
March59°F72°F65°F3.2"
April66°F78°F71°F2.8"
May72°F83°F77°F2.7"
June79°F89°F83°F3.8"
July80°F90°F85°F4.0"
August80°F91°F85°F6.2"
September77°F88°F82°F5.0"
October69°F82°F75°F4.5"
November60°F73°F66°F3.0"
December52°F65°F58°F4.2"

Did you know?

  • The highest monthly average temperature in San Leon for August is 85 degrees.
  • The lowest monthly average temperature in San Leon for January is 56 degrees.
  • The most monthly precipitation in San Leon occurs in August with 6.2 inches.
  • The air quality index in San Leon is 4% worse than the national average.
  • The pollution index in San Leon is 77% worse than the national average.

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Compare San Leon, TX Weather To Other Cities

San Leon 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.
IndexSan LeonTexasNational
Air quality index525250
Pollution index8,978,9904,642,9165,066,862

San Leon air quality information

MeasurementTotal
Days measured365
Days with good air quality171
Days with moderate air quality175
Days w/ poor A.Q. for sensitive groups18
Days with unhealthy air quality1

San Leon air quality information

PollutantTotal
Arsenic0.020%
Benzene0.070%
Carbon Tetrachloride0.150%
Lead0.040%
Mercury0.050%

Average monthly San Leon temperature with heat index

San Leon monthly precipitation with daily maximum

San Leon monthly snow depth with daily maximum

San Leon monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Deer Park, TX33,517524%
Hitchcock, TX7,464524%
League City, TX94,976524%
Seabrook, TX13,038524%
Tiki Island, TX900524%
San Leon, TX4,987524%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Hazardville, CT4,9863922%
Rainsville, AL4,9863628%
Blaine, WA4,9882746%
Saltillo, MS4,9883530%
Westmont, PA4,9894510%
San Leon, TX4,987524%
Source: The San Leon, TX 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.