Weather History for Portland Hillsboro, OR

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Month of December, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 58 °F 40 °F 26 °F
Mean Temperature 51 °F 34 °F 18 °F
Min Temperature 44 °F 27 °F 9 °F
Degree Days  
Heating Degree Days (base 65) 47 31 14 963
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 1 0 0 1
Dew Point  
Dew Point 51 °F 30 °F -1 °F
Precipitation  
Precipitation 0.65 in 0.04 in 0.00 in 1.08 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 29 mph 3 mph 0 mph
Gust Wind 37 mph 24 mph 21 mph
Sea Level Pressure  
Sea Level Pressure 30.63 in 30.31 in 29.90 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 07, 2013 Rise Set
Actual Time 7:38 AM PST 4:28 PM PST
Civil Twilight 7:04 AM PST 5:02 PM PST
Nautical Twilight 6:27 AM PST 5:39 PM PST
Astronomical Twilight 5:51 AM PST 6:15 PM PST
Moon 11:16 AM PST (12/7) 10:28 PM PST (12/7)
Length of Visible Light 9h 57m
Length of Day
8h 49m
Waxing Crescent, 30% of the Moon is Illuminated
Dec 7
Waxing Crescent
Dec 9
First Quarter
Dec 17
Full
Dec 25
Last Quarter
Jan 1
New

Weather History Calendar

Precipitation Actual month total 1.08 Normal Month Total: 6.74
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Rain
Actual:
58 | 44 0.65
Average:
47 | 34 0.19
Rain
Actual:
51 | 29 0.05
Average:
47 | 34 0.21
Partly Cloudy
Actual:
43 | 25 0.00
Average:
47 | 34 0.19
Clear
Actual:
38 | 19 0.00
Average:
46 | 33 0.20
Scattered Clouds
Actual:
33 | 15 0.00
Average:
46 | 33 0.19
Snow
Actual:
29 | 24 T
Average:
46 | 33 0.21
Clear
Actual:
29 | 12 0.00
Average:
46 | 33 0.20
Scattered Clouds
Actual:
26 | 9 0.00
Average:
46 | 33 0.22
Snow
Actual:
27 | 12 T
Average:
45 | 33 0.21
Snow
Actual:
35 | 22 T
Average:
45 | 32 0.21
Fog
Actual:
38 | 19 0.00
Average:
45 | 32 0.21
Snow
Actual:
34 | 20 0.08
Average:
45 | 32 0.21
Fog
Actual:
40 | 34 0.00
Average:
45 | 32 0.22
Fog
Actual:
40 | 36 0.00
Average:
45 | 32 0.22
Fog
Actual:
43 | 36 0.01
Average:
45 | 32 0.22
Fog
Actual:
44 | 32 0.00
Average:
45 | 32 0.22
Fog
Actual:
37 | 33 0.00
Average:
44 | 32 0.22
Rain
Actual:
40 | 25 0.02
Average:
44 | 32 0.23
Fog
Actual:
39 | 23 0.00
Average:
44 | 31 0.23
Rain
Actual:
40 | 31 0.11
Average:
44 | 31 0.23
Rain
Actual:
49 | 39 0.03
Average:
44 | 31 0.23
Rain
Actual:
52 | 41 T
Average:
44 | 31 0.22
Rain
Actual:
53 | 31 0.11
Average:
44 | 31 0.24
Fog
Actual:
38 | 28 0.00
Average:
44 | 31 0.24
Fog
Actual:
40 | 28 0.00
Average:
44 | 31 0.24
Fog
Actual:
33 | 29 0.00
Average:
44 | 31 0.24
Fog
Actual:
34 | 29 0.00
Average:
44 | 32 0.24
Mostly Cloudy
Actual:
45 | 32 0.00
Average:
44 | 32 0.22
Fog
Actual:
39 | 29 0.00
Average:
45 | 32 0.21
Fog
Actual:
42 | 31 0.00
Average:
45 | 32 0.22
Rain
Actual:
48 | 35 0.02
Average:
45 | 32 0.20
 

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

2013 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 58 51 44 51 48 43 100 90 80 30.20 30.07 29.92 10 8 2 20 10 28 0.65 Rain
2 51 40 29 46 35 28 96 77 58 30.07 29.99 29.92 10 10 8 20 6 24 0.05 Rain
3 43 34 25 33 28 19 96 68 39 30.31 30.17 30.07 10 9 2 17 4 22 0.00  
4 38 29 19 25 17 13 96 67 37 30.36 30.32 30.30 10 10 7 13 3 16 0.00  
5 33 24 15 20 15 11 92 68 43 30.32 30.26 30.19 10 10 9 15 3 21 0.00  
6 29 27 24 18 12 7 74 60 46 30.17 30.09 30.01 10 9 3 29 16 37 T Snow
7 29 21 12 11 4 -1 84 58 31 30.46 30.33 30.14 10 10 8 21 8 27 0.00  
8 26 18 9 14 10 5 84 65 46 30.62 30.54 30.46 10 10 8 5 1 6 0.00  
9 27 20 12 21 16 8 88 78 68 30.63 30.59 30.55 10 8 3 6 0 6 T Snow
10 35 29 22 27 23 21 92 82 72 30.56 30.50 30.41 7 5 2 6 1 6 T Snow
11 38 29 19 30 23 18 100 85 70 30.41 30.32 30.22 10 3 0 6 1 10 0.00 Fog
12 34 27 20 32 25 18 100 94 88 30.23 30.20 30.14 4 2 0 6 1 7 0.08 Fog , Rain , Snow
13 40 37 34 39 36 32 100 96 92 30.45 30.37 30.22 3 1 0 6 1 7 0.00 Fog
14 40 38 36 39 37 35 100 96 92 30.48 30.44 30.42 1 0 0 7 1 8 0.00 Fog
15 43 40 36 40 38 35 100 95 89 30.50 30.46 30.44 6 2 0 6 1 7 0.01 Fog
16 44 38 32 41 38 32 100 95 89 30.49 30.42 30.27 10 1 0 8 3 9 0.00 Fog
17 37 35 33 35 34 33 100 96 92 30.26 30.23 30.20 4 1 0 8 3 9 0.00 Fog
18 40 33 25 37 33 27 100 93 85 30.19 30.15 30.07 10 4 1 10 2 14 0.02 Rain
19 39 31 23 32 26 21 100 88 76 30.35 30.23 30.13 10 5 0 7 2 12 0.00 Fog
20 40 36 31 38 33 29 100 93 85 30.22 30.06 29.90 6 3 1 15 2 19 0.11 Rain
21 49 44 39 45 40 38 100 93 86 30.23 30.09 29.94 10 4 0 6 1 7 0.03 Fog , Rain
22 52 47 41 47 43 41 100 92 83 30.36 30.31 30.23 10 7 0 7 1 8 T Fog , Rain
23 53 42 31 48 41 30 100 88 76 30.55 30.38 30.30 10 5 0 16 5 20 0.11 Fog , Rain
24 38 33 28 37 31 28 100 96 92 30.63 30.57 30.51 3 0 0 9 2 10 0.00 Fog
25 40 34 28 35 31 27 100 93 85 30.50 30.47 30.42 10 2 0 8 1 12 0.00 Fog
26 33 31 29 32 30 29 100 96 92 30.41 30.35 30.25 1 0 0 6 1 7 0.00 Fog
27 34 32 29 32 30 28 100 95 89 30.43 30.31 30.23 8 2 0 7 2 8 0.00 Fog
28 45 39 32 38 33 31 100 88 76 30.52 30.47 30.41 10 7 1 6 0 6 0.00  
29 39 34 29 36 33 28 100 95 89 30.46 30.40 30.30 10 4 0 6 1 7 0.00 Fog
30 42 37 31 37 35 30 100 90 79 30.29 30.24 30.21 10 5 0 12 2 13 0.00 Fog
31 48 42 35 41 37 34 100 88 76 30.37 30.31 30.25 10 4 0 6 1 8 0.02 Fog , Rain