Grand Coulee, Washington | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Friday
    Mostly Sunny
    65°
    Forecast night icon
    Night
    Partly Cloudy
    49°
    Friday 5/17
    Day
    65°
    Mostly Sunny
    Forecast day icon
    Night
    49°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. High temperature around 65F. Dew point will be around 29F with an average humidity of 43%. Winds will be 11 mph from the NW.
    Night Details
    Partly cloudy. Lows in the upper 30s to lower 40s. Breezy. West wind 10 to 20 mph. Gusts up to 30 mph decreasing to 20 mph overnight.
  • Forecast day icon
    Saturday
    50% Chance Rain Showers
    64°
    Forecast night icon
    Night
    40% Chance Rain Showers
    49°
    Saturday 5/18
    Day
    64°
    50% Chance Rain Showers
    Forecast day icon
    Night
    49°
    40% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Sunny in the morning then partly cloudy with a chance of rain showers in the afternoon. Highs in the 60s. Southwest wind 5 to 15 mph. Gusts up to 25 mph in the afternoon. Chance of precipitation 50 percent.
    Night Details
    Partly cloudy. A chance of rain showers. Lows in the upper 30s to lower 40s. West wind 5 to 15 mph with gusts up to 30 mph. Chance of precipitation 40 percent. Rainfall amounts less than a tenth of an inch.
  • Forecast day icon
    Sunday
    Partly Cloudy
    66°
    Forecast night icon
    Night
    Partly Cloudy
    49°
    Sunday 5/19
    Day
    66°
    Partly Cloudy
    Forecast day icon
    Night
    49°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with a 20 percent chance of rain showers. Highs in the 60s. West wind 5 to 15 mph with gusts up to 20 mph.
    Night Details
    Partly cloudy. Lows in the upper 30s to mid 40s. West wind 5 to 10 mph with gusts up to 20 mph.
  • Forecast day icon
    Monday
    Partly Cloudy
    72°
    Forecast night icon
    Night
    Partly Cloudy
    51°
    Monday 5/20
    Day
    72°
    Partly Cloudy
    Forecast day icon
    Night
    51°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy. Highs in the upper 60s to mid 70s. Lows in the upper 30s to upper 40s.
    Night Details
    Partly cloudy. Highs in the upper 60s to mid 70s. Lows in the upper 30s to upper 40s.
  • Forecast day icon
    Tuesday
    Partly Cloudy
    72°
    Forecast night icon
    Night
    50% Chance Rain Showers
    58°
    Tuesday 5/21
    Day
    72°
    Partly Cloudy
    Forecast day icon
    Night
    58°
    50% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy. Highs in the upper 60s to mid 70s. Lows in the upper 30s to upper 40s.
    Night Details
    Mostly cloudy with a 50 percent chance of rain showers. Lows in the mid to upper 40s. Highs in the 60s.
  • Forecast day icon
    Wednesday
    50% Chance Rain Showers
    65°
    Forecast night icon
    Night
    40% Chance of Storms
    53°
    Wednesday 5/22
    Day
    65°
    50% Chance Rain Showers
    Forecast day icon
    Night
    53°
    40% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a 50 percent chance of rain showers. Lows in the mid to upper 40s. Highs in the 60s.
    Night Details
    Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower to mid 40s. Chance of precipitation 40 percent.
  • Forecast day icon
    Thursday
    Mostly Cloudy
    63°
    Forecast night icon
    Night
    Mostly Cloudy
    53°
    Thursday 5/23
    Day
    63°
    Mostly Cloudy
    Forecast day icon
    Night
    53°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a 20 percent chance of rain showers. Highs in the lower 60s to lower 70s. Lows in the 40s.
    Night Details
    Mostly cloudy with a 20 percent chance of rain showers. Highs in the lower 60s to lower 70s. Lows in the 40s.
  • Forecast day icon
    Friday
    Mostly Cloudy
    67°
    Forecast night icon
    Night
    Partly Cloudy
    54°
    Friday 5/24
    Day
    67°
    Mostly Cloudy
    Forecast day icon
    Night
    54°
    Partly Cloudy
    Forecast night icon
    Day Details
    Mostly cloudy with a 20 percent chance of rain showers. Highs in the lower 60s to lower 70s. Lows in the 40s.
    Night Details
    Partly cloudy. Low temperature around 54F. Dew point will be around 43F with an average humidity of 56%. Winds will be 1 mph from the SW.
  • Forecast day icon
    Saturday
    30% Chance of Rain
    71°
    Forecast night icon
    Night
    Partly Cloudy
    56°
    Saturday 5/25
    Day
    71°
    30% Chance of Rain
    Forecast day icon
    Night
    56°
    Partly Cloudy
    Forecast night icon
    Day Details
    Mostly sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 71F. Dew point will be around 44F with an average humidity of 45%. Winds will be 2 mph from the SW.
    Night Details
    Partly cloudy. Low temperature around 56F. Dew point will be around 43F with an average humidity of 51%. Winds will be 2 mph from the W.
  • Forecast day icon
    Sunday
    Partly Cloudy
    73°
    Forecast night icon
    Night
    Clear
    56°
    Sunday 5/26
    Day
    73°
    Partly Cloudy
    Forecast day icon
    Night
    56°
    Clear
    Forecast night icon
    Day Details
    Partly cloudy. High temperature around 73F. Dew point will be around 45F with an average humidity of 43%. Winds will be 2 mph from the SW.
    Night Details
    Clear. Low temperature around 56F. Dew point will be around 42F with an average humidity of 49%. Winds will be 2 mph from the W.