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      Extreme Heat Warning
      until 8:00 PM CDT
      +1 more alert
      Elev 600 ft, 33.198 °N 96.615 °W

      McKinney, TX

      McKinney National Station
      Updated: 3:47 PM CDT on August 21, 2026 (GMT -5)
      3 minutes ago
      99°
      82°
      99
      Feels Like 102
      Sunny
      N
      8
      Higher temperature is expected tomorrow
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
      Tonight
      Sat 08/22
      Low 78°f
      6% Precip. / 0 in
      Partly cloudy skies. Low 78F. Winds SE at 5 to 10 mph.
      Tomorrow
      Sun 08/23
      High 105°f
      15% Precip. / 0 in
      Partly cloudy skies. A stray shower or thunderstorm is possible. High near 105F. Winds S at 10 to 15 mph.
      Tomorrow night
      Sun 08/23
      Low 79°f
      15% Precip. / 0 in
      A stray shower or thunderstorm is possible early. Partly cloudy skies. Low 79F. Winds SSE at 5 to 10 mph.
      Hourly Forecast
      Now
      99°
      4PM
      99°
      5PM
      99°
      6PM
      98°
      7PM
      97°
      8PM
      94°
      8:05PM
      Sunset
      9PM
      91°
      10PM
      89°
      11PM
      87°
      12AM
      86°
      1AM
      84°
      2AM
      84°
      3AM
      83°
      4AM
      82°
      5AM
      82°
      6AM
      80°
      6:54AM
      Sunrise
      7AM
      79°
      8AM
      82°
      9AM
      86°
      10AM
      91°
      11AM
      95°
      12PM
      98°
      1PM
      100°
      2PM
      102°
      3PM
      103°
      Precipitation
      15%
      Pollen
      Ragweed Pollen
      Moderate
      Air Quality
      31
      Good
      UV Index
      6
      High
      Additional Conditions
      1. Pressure 29.93 in
      2. Visibility 10 miles
      3. Clouds Partly Cloudy
      4. Dew Point64°F
      5. Humidity 32%
      6. Rainfall 0 in
      7. Snow Depth 0 in
       KTKI Station History
      Almanac for August 21, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 99°F 94°F 109°F 1934
      4. Low 82°F 71°F 49°F 1989
      5. Rain/Snow Depth
      6. Precipitation 0 in - in -
      7. Snow 0 in - in -
      Almanac for August 22, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 105°F 94°F 108°F
      4. Low 82°F 71°F 54°F
      Astronomy
      1. Sun Rise Set
      2. Actual Time 6:53 AM 8:05 PM
      3. Civil Twilight 6:27 AM 8:30 PM
      4. Nautical Twilight 5:57 AM 9:01PM
      5. Astronomical Twilight 5:25 AM 9:33 PM
      1. Length of Visible Light 14h 3m
      2. Length of Day 13h 11m
      3. Tomorrow will be 1 minute 52 seconds shorter
      1. Moon 3:53 PM 12:41 AM
      2. Waxing Gibbous66% of the Moon is Illuminated
      Aug 27
      Full Moon
      Sep 4
      Waning Half Last Qtr
      Sep 10
      New Moon
      Sep 18
      Waxing Half First Qtr
      Precipitation
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