Weather History for Arlington, WA

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Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 53 °F 43 °F 37 °F
Mean Temperature 48 °F 39 °F 32 °F
Min Temperature 46 °F 35 °F 26 °F
Degree Days  
Heating Degree Days (base 65) 34 26 16 810
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 48 °F 36 °F 25 °F
Precipitation  
Precipitation 0.21 in 0.05 in 0.00 in 1.46 in
Snowdepth - - - -
Wind  
Wind 28 mph 5 mph 0 mph
Gust Wind 37 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.48 in 29.90 in 28.97 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 21, 2012 Rise Set
Actual Time 7:56 AM PST 4:17 PM PST
Civil Twilight 7:20 AM PST 4:54 PM PST
Nautical Twilight 6:40 AM PST 5:34 PM PST
Astronomical Twilight 6:02 AM PST 6:11 PM PST
Moon 12:24 PM PST (12/21) 1:29 AM PST (12/21)
Length of Visible Light 9h 34m
Length of Day
8h 20m
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

Weather History Calendar

Precipitation Actual month total 1.46 Average Month Total: 5.95
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Overcast
Actual:
50 | 46 0.07
Average:
45 | 31 0.24
Overcast
Actual:
48 | 42 0.20
Average:
44 | 31 0.37
Overcast
Actual:
51 | 44 0.00
Average:
46 | 34 0.16
Mostly Cloudy
Actual:
53 | 44 0.05
Average:
42 | 34 0.24
Mostly Cloudy
Actual:
46 | 33 0.13
Average:
41 | 31 0.22
Overcast
Actual:
44 | 37 0.07
Average:
42 | 29 0.17
Mostly Cloudy
Actual:
42 | 33 0.02
Average:
47 | 32 0.22
Partly Cloudy
Actual:
39 | 32 0.04
Average:
43 | 34 0.23
Overcast
Actual:
37 | 33 0.01
Average:
42 | 32 0.19
Overcast
Actual:
42 | 37 0.00
Average:
46 | 33 0.24
Overcast
Actual:
44 | 39 0.01
Average:
51 | 40 0.23
Overcast
Actual:
42 | 35 0.15
Average:
47 | 34 0.20
Overcast
Actual:
42 | 37 0.00
Average:
48 | 36 0.16
Partly Cloudy
Actual:
42 | 28 0.00
Average:
51 | 35 0.27
Mostly Cloudy
Actual:
41 | 28 0.02
Average:
51 | 40 0.19
Overcast
Actual:
42 | 35 0.21
Average:
52 | 39 0.22
Mostly Cloudy
Actual:
44 | 33 0.18
Average:
50 | 39 0.19
Mostly Cloudy
Actual:
37 | 33 0.00
Average:
45 | 35 0.18
Overcast
Actual:
41 | 35 0.11
Average:
43 | 30 0.10
Mostly Cloudy
Actual:
44 | 32 0.07
Average:
43 | 29 0.18
Partly Cloudy
Actual:
42 | 26 0.00
Average:
45 | 32 0.16
Mostly Cloudy
Actual:
46 | 33 0.03
Average:
45 | 34 0.20
Mostly Cloudy
Actual:
44 | 37 0.02
Average:
45 | 33 0.18
Mostly Cloudy
Actual:
42 | 35 0.00
Average:
46 | 31 0.15
Mostly Cloudy
Actual:
42 | 33 0.00
Average:
43 | 29 0.15
Overcast
Actual:
44 | 37 0.00
Average:
47 | 30 0.18
Overcast
Actual:
42 | 39 0.01
Average:
45 | 29 0.22
Partly Cloudy
Actual:
44 | 35 0.00
Average:
43 | 22 0.16
Overcast
Actual:
39 | 33 0.06
Average:
39 | 21 0.12
Overcast
Actual:
37 | 30 0.00
Average:
41 | 24 0.07
Partly Cloudy
Actual:
37 | 26 0.00
Average:
38 | 18 0.16
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

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  
1 50 48 46 45 42 39 93 81 71 29.64 29.51 29.32 10 10 10 26 14 34 0.07  
2 48 45 42 43 41 39 93 85 76 29.77 29.46 29.19 10 9 3 21 5 25 0.20  
3 51 48 44 43 42 39 93 81 62 30.02 29.89 29.65 10 10 7 23 13 32 0.00  
4 53 48 44 48 42 39 93 78 62 29.80 29.67 29.54 10 10 7 28 15 36 0.05  
5 46 40 33 39 36 30 93 77 66 30.20 30.12 29.82 10 10 4 15 8 21 0.13  
6 44 40 37 41 38 36 93 84 71 30.18 30.11 30.06 10 10 8 14 8 17 0.07  
7 42 38 33 41 36 30 93 85 61 30.15 30.04 29.95 10 10 7 18 7 31 0.02  
8 39 36 32 36 33 30 93 90 81 30.38 30.26 30.14 10 8 1 7 0 - 0.04  
9 37 35 33 36 34 30 93 92 87 30.39 30.36 30.31 10 7 2 8 1 - 0.01  
10 42 40 37 39 38 36 100 91 87 30.44 30.35 30.10 10 6 0 9 0 - 0.00  
11 44 42 39 39 38 37 93 84 76 30.08 29.73 29.57 10 10 8 20 10 24 0.01  
12 42 38 35 39 37 34 100 89 81 30.05 29.85 29.62 10 9 0 5 0 - 0.15  
13 42 40 37 36 35 34 93 87 70 30.06 29.97 29.82 10 10 5 12 2 - 0.00  
14 42 35 28 37 33 27 100 89 70 29.96 29.89 29.81 10 8 0 9 4 - 0.00  
15 41 34 28 34 31 25 93 85 70 29.93 29.70 29.56 10 9 0 15 4 21 0.02  
16 42 38 35 37 35 34 93 87 81 29.75 29.47 28.99 10 10 7 21 9 28 0.21  
17 44 38 33 41 34 27 93 78 57 29.89 29.48 28.97 10 10 8 18 11 37 0.18  
18 37 35 33 34 31 30 93 85 81 29.99 29.94 29.88 10 10 6 15 9 20 0.00  
19 41 38 35 37 34 28 93 84 70 29.95 29.73 29.59 10 10 9 23 13 32 0.11  
20 44 38 32 39 36 28 93 85 75 29.84 29.66 29.52 10 10 9 20 10 26 0.07  
21 42 34 26 37 31 25 100 89 76 29.84 29.76 29.70 10 8 0 8 1 - 0.00  
22 46 40 33 41 35 30 93 84 71 29.70 29.59 29.52 10 10 8 21 4 26 0.03  
23 44 40 37 37 37 34 93 84 71 29.83 29.70 29.64 10 9 4 7 2 - 0.02  
24 42 38 35 39 36 34 93 88 81 30.18 30.08 29.84 10 10 3 9 1 - 0.00  
25 42 38 33 37 34 30 93 85 61 30.07 29.78 29.68 10 10 10 21 1 28 0.00  
26 44 40 37 37 36 34 93 84 76 29.92 29.79 29.72 10 10 9 16 5 21 0.00  
27 42 40 39 41 38 36 93 89 81 30.18 30.10 29.92 10 9 2 10 4 - 0.01  
28 44 40 35 37 35 34 93 85 71 30.19 30.15 30.13 10 10 10 6 1 - 0.00  
29 39 36 33 36 35 32 100 91 87 30.25 30.20 30.17 10 8 0 5 0 - 0.06  
30 37 34 30 34 31 28 100 91 81 30.35 30.31 30.25 10 5 0 0 0 - 0.00  
31 37 32 26 34 29 25 100 90 81 30.48 30.35 30.27 10 7 0 5 0 - 0.00