My Profile
  1. Member Settings
  2. My Devices
  3. Sign Out
Log In
    Favorites
        More Settings
      Flood Watch
      until 1:00 PM CDT
      +2 more alerts
      Elev 548 ft, 41.879 °N 87.643 °W

      Chicago, IL

      West Loop - Old St. Pats Station71°
      Updated: 3:14 PM CDT on September 18, 2026 (GMT -5)
      9 minutes ago
      72°
      66°
      71
      Feels Like 71
      Mostly Cloudy
      N
      13
      Gusts 20 mph
      Higher temperature is expected tomorrow
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Today
        Fri 09/18
        High 70°f
         52% Precip. / 0.01 in
        Considerable cloudiness with occasional rain showers. High around 70F. Winds ENE at 10 to 15 mph. Chance of rain 50%.
        Tonight
        Fri 09/18
        Low 63°f
         81% Precip. / 0.65 in
        Rain showers in the evening with thunderstorms developing overnight. Severe thunderstorms expected. Low 63F. Winds ESE at 10 to 15 mph. Chance of rain 80%.
        Tomorrow
        Sat 09/19
        High 74°f66°f
         85% Precip. / 0.43 in
        Thunderstorms likely in the morning. Then a chance of scattered thunderstorms in the afternoon. Severe thunderstorms expected. High 74F. Winds SSE at 10 to 15 mph. Chance of rain 90%.
        Hourly Forecast
        Now
        70°
        4PM
        46%
        71°
        5PM
        70°
        6PM
        70°
        6:54PM
        Sunset
        7PM
        70°
        8PM
        69°
        9PM
        69°
        10PM
        68°
        11PM
        33%
        68°
        12AM
        68°
        1AM
        31%
        67°
        2AM
        73%
        67°
        3AM
        81%
        66°
        4AM
        82%
        65°
        5AM
        73%
        65°
        6AM
        65%
        65°
        6:35AM
        Sunrise
        7AM
        67%
        64°
        8AM
        76%
        65°
        9AM
        86%
        65°
        10AM
        62%
        65°
        11AM
        44%
        66°
        12PM
        36%
        68°
        1PM
        70°
        2PM
        71°
        3PM
        72°
        Precipitation
        86%
        Rain likely around 4:30 PM
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        25
        Good
        UV Index
        2
        Low
        Additional Conditions
        1. Pressure 30.18 in
        2. Visibility 10 miles
        3. Clouds Mostly Cloudy
        4. Dew Point59°F
        5. Humidity 67%
        6. Rainfall 0.01 in
        7. Snow Depth 0 in
         KMDW Station History
        Almanac for September 18, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 72°F 76°F 91°F 1988
        4. Low 66°F 57°F 43°F 1929
        5. Rain/Snow Depth
        6. Precipitation 0.66 in 0.11 in -
        7. Snow 0 in - in -
        Almanac for September 19, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 74°F 75°F 91°F
        4. Low 66°F 56°F 42°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:33 AM 6:54 PM
        3. Civil Twilight 6:06 AM 7:22 PM
        4. Nautical Twilight 5:33 AM 7:55PM
        5. Astronomical Twilight 4:59 AM 8:28 PM
        1. Length of Visible Light 13h 16m
        2. Length of Day 12h 20m
        3. Tomorrow will be 2 minutes 47 seconds shorter
        1. Moon 2:33 PM 11:01 PM
        2. First Quarter49% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
        Loading…
        Health
        Loading…
        Weather Alerts
        Loading…
        Our AppsAbout UsContactCareersWeather Data APIs
        PWS NetworkWundermap
        Terms of UsePrivacy PolicyCookie NoticeAccessibility StatementAdChoicesData Vendors
        essentialaccessibility.com
        We recognize our responsibility to use data and technology for good. We may use or share your data with our data vendors. Take control of your data.
        Review All Privacy and Ad Settings
        Choose how my information is shared
        Data Rights
        The Weather Company The Weather Channel Weather Underground Storm Radar
        © The Weather Company, LLC 2026
        Glossary