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      Elev 1476 ft, 47.935 °N 118.998 °W

      Grand Coulee, WA

      Grand Coulee Station55°
      Updated: 7:14 AM PDT on September 20, 2026 (GMT -7)
      6 minutes ago
      86°
      52°
      55
      Feels Like 55
      Sunny
      N
      4
      Higher temperature is expected today
      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
        Mon 09/21
        High 86°f
         1% Precip. / 0 in
        Plentiful sunshine. High 86F. Winds light and variable.
        Tonight
        Mon 09/21
        Low 52°f
         2% Precip. / 0 in
        Clear skies. Low 52F. Winds light and variable.
        Tomorrow
        Tue 09/22
        High 87°f53°f
         2% Precip. / 0 in
        Sunshine and some clouds. High 87F. Winds SE at 5 to 10 mph.
        Hourly Forecast
        Now
        54°
        8AM
        57°
        9AM
        62°
        10AM
        68°
        11AM
        71°
        12PM
        74°
        1PM
        78°
        2PM
        80°
        3PM
        83°
        4PM
        84°
        5PM
        84°
        6PM
        82°
        6:57PM
        Sunset
        7PM
        77°
        8PM
        71°
        9PM
        68°
        10PM
        64°
        11PM
        63°
        12AM
        60°
        1AM
        59°
        2AM
        57°
        3AM
        56°
        4AM
        55°
        5AM
        55°
        6AM
        53°
        6:41AM
        Sunrise
        7AM
        53°
        Precipitation
        2%
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        52
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.08 in
        2. Visibility 10 miles
        3. Clouds Clear
        4. Dew Point45°F
        5. Humidity 70%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KOMK Station History
        Almanac for September 20, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 86°F 75°F 96°F 1950
        4. Low 52°F 49°F 36°F 1983
        5. Rain/Snow Depth
        6. Precipitation 0 in - in -
        7. Snow 0 in - in -
        Almanac for September 21, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 87°F 75°F 96°F
        4. Low 52°F 49°F 37°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:40 AM 6:57 PM
        3. Civil Twilight 6:09 AM 7:28 PM
        4. Nautical Twilight 5:32 AM 8:04PM
        5. Astronomical Twilight 4:54 AM 8:42 PM
        1. Length of Visible Light 13h 19m
        2. Length of Day 12h 17m
        3. Tomorrow will be 3 minutes 27 seconds shorter
        1. Moon 4:35 PM -
        2. Waxing Gibbous69% of the Moon is Illuminated
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Precipitation
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