TODAY FEB21
TEMPERATURE46
HUMIDITY31
PRESSURE30.6
WIND COND. 4.7
  • 5745Sat
  • 6349Sun20%
  • 6340Mon
  • 5735Tue
  • 5031Wed
daynightWeather update from McKinney - McKinney National Airport at
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Allen 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
January35°F54°F44°F11.6"
February39°F60°F49°F2.6"
March48°F70°F58°F6.5"
April51°F73°F62°F5.8"
May63°F81°F71°F8.0"
June70°F90°F79°F11.0"
July71°F92°F80°F4.1"
August73°F96°F83°F1.9"
September67°F91°F78°F4.9"
October54°F80°F66°F6.8"
November47°F70°F58°F4.2"
December34°F60°F46°F5.3"

Did you know?

  • The highest monthly average temperature in Allen for August is 83 degrees.
  • The lowest monthly average temperature in Allen for January is 44 degrees.
  • The most monthly precipitation in Allen occurs in January with 11.6 inches.
  • The air quality index in Allen is 9% worse than the national average.
  • The pollution index in Allen is 75% worse than the national average.

Compare Allen, TX Weather To Other Cities

Allen 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.
IndexAllenTexasNational
Air quality index545250
Pollution index8,884,1904,642,9165,066,862

Allen air quality information

MeasurementTotal
Days measured365
Days with good air quality156
Days with moderate air quality176
Days w/ poor A.Q. for sensitive groups32
Days with unhealthy air quality1

Allen air quality information

PollutantTotal
Arsenic0.030%
Benzene0.070%
Carbon Tetrachloride0.040%
Lead0.260%
Mercury0.020%

Average monthly Allen temperature with heat index

Allen monthly precipitation with daily maximum

Allen monthly snow depth with daily maximum

Allen monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Celina, TX7,236548%
Garland, TX234,810548%
Little Elm, TX35,553548%
Melissa, TX6,844548%
Plano, TX279,088548%
Allen, TX94,710548%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Sparks, NV94,71850= 100
Brockton, MA94,813476%
Livonia, MI94,849524%
Beaverton, OR94,8653824%
League City, TX94,976524%
Allen, TX94,710548%
Source: The Allen, 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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