TODAY JUN21
TEMPERATURE77
HUMIDITY96
PRESSURE29.82
WIND COND.120 8.1
  • 9477Fri30%
  • 9479Sat
  • 9579Sun20%
  • 9279Mon30%30%
  • 9278Tue30%30%
daynightWeather update from Harlingen, Rio Grande Valley International Airport at

Mercedes 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
January34°F88°F62°F0.0"
February34°F99°F67°F0.1"
March36°F101°F71°F0.0"
April41°F100°F76°F0.2"
May57°F102°F81°F0.4"
June68°F102°F85°F0.2"
July70°F106°F85°F1.4"
August73°F104°F86°F0.8"
September62°F104°F82°F1.3"
October46°F97°F76°F0.5"
November40°F91°F69°F0.5"
December31°F91°F62°F0.8"

Did you know?

  • The highest monthly average temperature in Mercedes for August is 86 degrees.
  • The lowest monthly average temperature in Mercedes for December is 62 degrees.
  • The most monthly precipitation in Mercedes occurs in July with 1.4 inches.
  • The air quality index in Mercedes is 27% better than the national average.
  • The pollution index in Mercedes is 40% worse than the national average.

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Compare Mercedes, TX Weather To Other Cities

Mercedes 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.
IndexMercedesTexasNational
Air quality index365250
Pollution index7,136,5304,642,9165,066,862

Mercedes 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

Mercedes air quality information

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

Average monthly Mercedes temperature with heat index

Mercedes monthly precipitation with daily maximum

Mercedes monthly snow depth with daily maximum

Mercedes monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Bixby, TX5283628%
Donna, TX16,3493628%
Evergreen, TX553628%
Indian Hills, TX2,9793628%
Midway North, TX4,9903628%
Mercedes, TX16,5013628%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Taylor, TX16,4924118%
Red Wing, MN16,4843628%
Apollo Beach, FL16,4824314%
Three Lakes, FL16,4794118%
Glen Allen, VA16,5243922%
Mercedes, TX16,5013628%
Source: The Mercedes, 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.