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      Severe Thunderstorm Watch
      until 10:00 PM CDT
      +1 more alert
      Elev 663 ft, 41.857 °N 87.885 °W

      Westchester, IL

      Seminary District Station
      Updated: 8:48 PM CDT on August 21, 2026 (GMT -5)
      4 minutes ago
      81°
      59°
      73
      Feels Like 74
      Mostly Cloudy
      N
      8
      Similar 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 64°f
      51% Precip. / 0.04 in
      Partly to mostly cloudy skies with scattered thunderstorms during the evening. A few storms may be severe. Low 64F. Winds W at 5 to 10 mph. Chance of rain 50%.
      Tomorrow
      Sun 08/23
      High 81°f
      15% Precip. / 0 in
      Sunshine and clouds mixed. A stray shower or thunderstorm is possible. High 81F. Winds NW at 10 to 15 mph.
      Tomorrow night
      Sun 08/23
      Low 59°f
      5% Precip. / 0 in
      Clear. Low 59F. Winds NNW at 10 to 15 mph.
      Hourly Forecast
      Now
      72°
      9PM
      72°
      10PM
      52%
      71°
      11PM
      70°
      12AM
      69°
      1AM
      68°
      2AM
      67°
      3AM
      67°
      4AM
      66°
      5AM
      66°
      6AM
      65°
      6:07AM
      Sunrise
      7AM
      66°
      8AM
      67°
      9AM
      69°
      10AM
      72°
      11AM
      75°
      12PM
      77°
      1PM
      79°
      2PM
      80°
      3PM
      80°
      4PM
      79°
      5PM
      78°
      6PM
      77°
      7PM
      75°
      7:40PM
      Sunset
      8PM
      73°
      Precipitation
      52%
      Thunderstorms possible around 10:00 PM
      Pollen
      Grass Pollen
      Low
      Air Quality
      64
      Moderate
      UV Index
      0
      Low
      Additional Conditions
      1. Pressure 29.93 in
      2. Visibility 10 miles
      3. Clouds Mostly Cloudy
      4. Dew Point65°F
      5. Humidity 79%
      6. Rainfall 0.01 in
      7. Snow Depth 0 in
       KMDW Station History
      Almanac for August 22, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 81°F 82°F 99°F 1936
      4. Low 59°F 65°F 49°F 2004
      5. Rain/Snow Depth
      6. Precipitation 0.04 in 4 in -
      7. Snow 0 in 0 in -
      Almanac for August 23, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 81°F 82°F 99°F
      4. Low 59°F 64°F 46°F
      Astronomy
      1. Sun Rise Set
      2. Actual Time 6:07 AM 7:40 PM
      3. Civil Twilight 5:37 AM 8:10 PM
      4. Nautical Twilight 5:02 AM 8:45PM
      5. Astronomical Twilight 4:24 AM 9:23 PM
      1. Length of Visible Light 14h 32m
      2. Length of Day 13h 33m
      3. Tomorrow will be 2 minutes 36 seconds shorter
      1. Moon 4:42 PM 12:19 AM
      2. Waxing Gibbous75% 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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