Weather History for Seattle, WA

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Week of December 16, 2012 through December 22, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 47 °F 45 °F 39 °F
Mean Temperature 43 °F 40 °F 36 °F
Min Temperature 39 °F 35 °F 29 °F
Degree Days  
Heating Degree Days (base 65) 29 25 22 176
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 41 °F 34 °F 26 °F
Precipitation  
Precipitation 0.89 in 0.34 in 0.07 in 2.36 in
Snowdepth 1.0 in 0.1 in 0.0 in -
Wind  
Wind 38 mph 11 mph 0 mph
Gust Wind 59 mph 26 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.01 in 29.68 in 28.95 in

Weekly Weather History Graph

Weekly Weather History Graph

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Date:

Astronomy

Dec. 21, 2012 Rise Set
Actual Time 7:54 AM PST 4:21 PM PST
Civil Twilight 7:18 AM PST 4:57 PM PST
Nautical Twilight 6:39 AM PST 5:36 PM PST
Astronomical Twilight 6:01 AM PST 6:13 PM PST
Moon 12:26 PM PST (12/21) 1:29 AM PST (12/21)
Length of Visible Light 9h 38m
Length of Day
8h 26m
Waxing Gibbous, 66% of the Moon is Illuminated
Dec 21
Waxing Gibbous
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
16 44 41 38 40 35 33 92 86 79 29.77 29.52 28.99 10 9 5 23 12 30 0.89 Rain
17 47 41 35 41 34 29 89 76 62 29.91 29.50 28.95 10 10 6 38 21 59 0.08 Rain
18 39 36 33 32 30 27 89 80 70 30.01 29.95 29.87 10 8 1 20 12 25 0.13 Snow
19 47 41 35 39 33 26 89 75 60 29.96 29.73 29.57 10 8 2 28 13 38 0.54 Rain , Snow
20 45 39 33 40 36 30 92 84 76 29.85 29.68 29.53 10 9 5 22 8 29 0.52 Rain
21 47 38 29 36 33 28 92 78 64 29.83 29.76 29.68 10 10 9 14 4 18 0.07 Rain
22 47 43 39 40 36 33 89 75 60 29.76 29.61 29.52 10 9 1 25 8 35 0.13 Rain