TODAY JAN18
TEMPERATURE81
HUMIDITY53
PRESSURE30.08
WIND COND.270 5.8
  • 6447Sun
  • 6452
  • 6759Tue20%40%
  • 7160Wed50%30%
  • 7656Thu30%
daynightWeather update from McAllen, Miller International Airport at
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San Juan 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
January51°F74°F61°F1.0"
February56°F78°F65°F0.8"
March62°F84°F71°F1.0"
April68°F89°F77°F1.5"
May73°F93°F81°F2.1"
June77°F97°F85°F1.8"
July78°F98°F86°F3.3"
August78°F99°F87°F1.8"
September75°F95°F83°F4.6"
October68°F90°F78°F1.6"
November60°F82°F70°F1.1"
December54°F75°F63°F1.4"

Did you know?

  • The highest monthly average temperature in San Juan for August is 87 degrees.
  • The lowest monthly average temperature in San Juan for January is 61 degrees.
  • The most monthly precipitation in San Juan occurs in September with 4.6 inches.
  • The air quality index in San Juan is 28% better than the national average.
  • The pollution index in San Juan is 41% worse than the national average.

Compare San Juan, TX Weather To Other Cities

San Juan 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 JuanTexasNational
Air quality index365250
Pollution index7,136,5304,642,9165,066,862

San Juan air quality information

MeasurementTotal
Days measured365
Days with good air quality286
Days with moderate air quality78
Days w/ poor A.Q. for sensitive groups1
Days with unhealthy air quality

San Juan air quality information

PollutantTotal
Arsenic0.010%
Benzene0.080%
Carbon Tetrachloride0.010%
Lead0.020%
Mercury0.001%

Average monthly San Juan temperature with heat index

San Juan monthly precipitation with daily maximum

San Juan monthly snow depth with daily maximum

San Juan monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Barrera, TX03628%
Doffing, TX5,6403628%
Edinburg, TX84,3993628%
Faysville, TX4993628%
La Blanca, TX2,1703628%
San Juan, TX35,9833628%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
San Juan Capistrano, CA36,0068570%
Del Rio, TX36,007285470%
Leavenworth, KS35,9485816%
Bell, CA35,9277448%
Goldsboro, NC35,9244020%
San Juan, TX35,9833628%
Source: The San Juan, 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.
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