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December weather forecast in Seattle

Average data for 10 years

  • 29 November, Sunday. morning, 8°; night, 5°; ; Feels like +3°; Pressure 759 millimeters of mercury; Humidity 85%; Wind speed 4.8 Meters per second, south-easterly; Daytime water temperature +6°

  • 30 November, Monday. morning, 8°; night, 5°; rain; Feels like +2°; Pressure 758 millimeters of mercury; Humidity 86%; Wind speed 5.5 Meters per second, southerly; Daytime water temperature +7°

  • 1 December, Tuesday. morning, 8°; night, 5°; ; Feels like +2°; Pressure 758 millimeters of mercury; Humidity 85%; Wind speed 5 Meters per second, southerly; Daytime water temperature +6°

  • 2 December, Wednesday. morning, 8°; night, 4°; rain; Feels like +2°; Pressure 758 millimeters of mercury; Humidity 85%; Wind speed 5.3 Meters per second, southerly; Daytime water temperature +5°

  • 3 December, Thursday. morning, 8°; night, 4°; ; Feels like +2°; Pressure 760 millimeters of mercury; Humidity 84%; Wind speed 4.5 Meters per second, south-easterly; Daytime water temperature +5°

  • 4 December, Friday. morning, 8°; night, 5°; ; Feels like +2°; Pressure 761 millimeters of mercury; Humidity 83%; Wind speed 4.5 Meters per second, south-easterly; Daytime water temperature +5°

  • 5 December, Saturday. morning, 8°; night, 5°; ; Feels like +2°; Pressure 760 millimeters of mercury; Humidity 84%; Wind speed 4.5 Meters per second, south-easterly; Daytime water temperature +5°

  • 6 December, Sunday. morning, 7°; night, 5°; ; Feels like +2°; Pressure 759 millimeters of mercury; Humidity 83%; Wind speed 4.5 Meters per second, south-easterly; Daytime water temperature +4°

  • 7 December, Monday. morning, 7°; night, 5°; ; Feels like +2°; Pressure 759 millimeters of mercury; Humidity 81%; Wind speed 4.5 Meters per second, south-easterly; Daytime water temperature +5°

  • 8 December, Tuesday. morning, 7°; night, 4°; ; Feels like +2°; Pressure 759 millimeters of mercury; Humidity 81%; Wind speed 4.9 Meters per second, southerly; Daytime water temperature +5°

  • 9 December, Wednesday. morning, 7°; night, 5°; ; Feels like +2°; Pressure 760 millimeters of mercury; Humidity 83%; Wind speed 4.9 Meters per second, south-easterly; Daytime water temperature +5°

  • 10 December, Thursday. morning, 7°; night, 5°; rain; Feels like +2°; Pressure 758 millimeters of mercury; Humidity 87%; Wind speed 5.3 Meters per second, southerly; Daytime water temperature +6°

  • 11 December, Friday. morning, 8°; night, 5°; rain; Feels like +2°; Pressure 758 millimeters of mercury; Humidity 87%; Wind speed 5.5 Meters per second, southerly; Daytime water temperature +5°

  • 12 December, Saturday. morning, 8°; night, 5°; rain; Feels like +2°; Pressure 757 millimeters of mercury; Humidity 85%; Wind speed 5.9 Meters per second, southerly; Daytime water temperature +5°

  • 13 December, Sunday. morning, 7°; night, 5°; rain; Feels like +2°; Pressure 756 millimeters of mercury; Humidity 85%; Wind speed 5.5 Meters per second, southerly; Daytime water temperature +4°

  • 14 December, Monday. morning, 7°; night, 5°; rain; Feels like +2°; Pressure 757 millimeters of mercury; Humidity 84%; Wind speed 5.9 Meters per second, southerly; Daytime water temperature +4°

  • 15 December, Tuesday. morning, 7°; night, 5°; rain; Feels like +1°; Pressure 758 millimeters of mercury; Humidity 83%; Wind speed 6.1 Meters per second, southerly; Daytime water temperature +4°

  • 16 December, Wednesday. morning, 7°; night, 5°; rain; Feels like +2°; Pressure 759 millimeters of mercury; Humidity 84%; Wind speed 5.5 Meters per second, southerly; Daytime water temperature +5°

  • 17 December, Thursday. morning, 7°; night, 5°; rain; Feels like +2°; Pressure 758 millimeters of mercury; Humidity 84%; Wind speed 5.5 Meters per second, southerly; Daytime water temperature +5°

  • 18 December, Friday. morning, 7°; night, 4°; rain; Feels like +2°; Pressure 758 millimeters of mercury; Humidity 83%; Wind speed 5.3 Meters per second, southerly; Daytime water temperature +4°

  • 19 December, Saturday. morning, 7°; night, 5°; rain; Feels like +1°; Pressure 758 millimeters of mercury; Humidity 82%; Wind speed 5.6 Meters per second, southerly; Daytime water temperature +5°

  • 20 December, Sunday. morning, 7°; night, 4°; rain; Feels like +1°; Pressure 757 millimeters of mercury; Humidity 84%; Wind speed 5.6 Meters per second, southerly; Daytime water temperature +4°

  • 21 December, Monday. morning, 7°; night, 4°; rain; Feels like +2°; Pressure 757 millimeters of mercury; Humidity 84%; Wind speed 5.1 Meters per second, south-easterly; Daytime water temperature +4°

  • 22 December, Tuesday. morning, 6°; night, 4°; ; Feels like +1°; Pressure 758 millimeters of mercury; Humidity 85%; Wind speed 4.6 Meters per second, south-easterly; Daytime water temperature +5°

  • 23 December, Wednesday. morning, 7°; night, 4°; rain; Feels like +1°; Pressure 759 millimeters of mercury; Humidity 84%; Wind speed 4.8 Meters per second, southerly; Daytime water temperature +3°

  • 24 December, Thursday. morning, 7°; night, 4°; rain; Feels like +1°; Pressure 759 millimeters of mercury; Humidity 86%; Wind speed 4.6 Meters per second, south-easterly; Daytime water temperature +4°

  • 25 December, Friday. morning, 7°; night, 4°; rain; Feels like +1°; Pressure 758 millimeters of mercury; Humidity 86%; Wind speed 5 Meters per second, south-easterly; Daytime water temperature +3°

  • 26 December, Saturday. morning, 7°; night, 4°; rain; Feels like +1°; Pressure 757 millimeters of mercury; Humidity 85%; Wind speed 5.5 Meters per second, southerly; Daytime water temperature +4°

  • 27 December, Sunday. morning, 7°; night, 4°; rain; Feels like +1°; Pressure 757 millimeters of mercury; Humidity 85%; Wind speed 5.5 Meters per second, southerly; Daytime water temperature +5°

  • 28 December, Monday. morning, 7°; night, 4°; rain; Feels like +2°; Pressure 758 millimeters of mercury; Humidity 87%; Wind speed 5 Meters per second, southerly; Daytime water temperature +4°

  • 29 December, Tuesday. morning, 7°; night, 4°; ; Feels like +2°; Pressure 758 millimeters of mercury; Humidity 85%; Wind speed 5 Meters per second, south-easterly; Daytime water temperature +3°

  • 30 December, Wednesday. morning, 7°; night, 4°; ; Feels like +2°; Pressure 758 millimeters of mercury; Humidity 85%; Wind speed 4.9 Meters per second, southerly; Daytime water temperature +4°

  • 31 December, Thursday. morning, 7°; night, 4°; ; Feels like +1°; Pressure 759 millimeters of mercury; Humidity 85%; Wind speed 4.5 Meters per second, south-easterly; Daytime water temperature +4°

  • 1 January, Friday. morning, 7°; night, 4°; ; Feels like +1°; Pressure 758 millimeters of mercury; Humidity 84%; Wind speed 4.5 Meters per second, south-easterly; Daytime water temperature +3°

  • 2 January, Saturday. morning, 7°; night, 4°; rain; Feels like +1°; Pressure 757 millimeters of mercury; Humidity 82%; Wind speed 5.1 Meters per second, southerly; Daytime water temperature +3°

In December, the weather in Seattle is typically rainy and cold. The average daily high in December is 6 degrees above zero. On average, Seattle has 19 rainy, 18 cloudy, and 2 sunny days in December. December along with January, February, March, and April is considered the least comfortable time to visit Seattle.