Weather History for Portland, OR

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Month of January, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 55 °F 43 °F 34 °F
Mean Temperature 50 °F 38 °F 30 °F
Min Temperature 44 °F 33 °F 23 °F
Degree Days  
Heating Degree Days (base 65) 35 27 15 835
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 0 0 0 0
Dew Point  
Dew Point 48 °F 33 °F 20 °F
Precipitation  
Precipitation 1.00 in 0.12 in 0.00 in 3.49 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 30 mph 6 mph 0 mph
Gust Wind 36 mph 25 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.69 in 30.27 in 29.71 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jan. 29, 2013 Rise Set
Actual Time 7:34 AM PST 5:13 PM PST
Civil Twilight 7:02 AM PST 5:44 PM PST
Nautical Twilight 6:27 AM PST 6:20 PM PST
Astronomical Twilight 5:52 AM PST 6:55 PM PST
Moon 8:27 PM PST (1/29) 8:23 AM PST (1/29)
Length of Visible Light 10h 42m
Length of Day
9h 38m
Waning Gibbous, 93% of the Moon is Illuminated
Jan 29
Waning Gibbous
Feb 3
Last Quarter
Feb 9
New
Feb 17
First Quarter
Feb 25
Full

Weather History Calendar

Precipitation Actual month total 3.49 Normal Month Total: 4.88
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Fog
Actual:
40 | 23 0.00
Average:
45 | 35 0.17
Scattered Clouds
Actual:
41 | 32 0.00
Average:
45 | 35 0.17
Rain
Actual:
40 | 32 T
Average:
45 | 35 0.17
Rain
Actual:
42 | 34 0.02
Average:
45 | 35 0.17
Rain
Actual:
38 | 34 0.02
Average:
45 | 35 0.17
Rain
Actual:
40 | 34 0.19
Average:
46 | 35 0.17
Rain
Actual:
53 | 39 0.07
Average:
46 | 35 0.17
Rain
Actual:
55 | 44 0.14
Average:
46 | 35 0.17
Rain
Actual:
53 | 36 0.22
Average:
46 | 36 0.17
Snow
Actual:
40 | 33 0.16
Average:
46 | 36 0.17
Fog
Actual:
40 | 29 0.00
Average:
46 | 36 0.17
Partly Cloudy
Actual:
34 | 26 0.00
Average:
46 | 36 0.17
Partly Cloudy
Actual:
34 | 26 T
Average:
47 | 36 0.16
Snow
Actual:
34 | 29 0.03
Average:
47 | 36 0.16
Rain
Actual:
38 | 34 0.01
Average:
47 | 36 0.16
Overcast
Actual:
37 | 34 0.00
Average:
47 | 36 0.15
Partly Cloudy
Actual:
44 | 31 0.00
Average:
47 | 36 0.16
Scattered Clouds
Actual:
46 | 26 0.00
Average:
47 | 36 0.16
Fog
Actual:
37 | 25 0.00
Average:
47 | 36 0.15
Fog
Actual:
42 | 27 0.00
Average:
48 | 36 0.15
Clear
Actual:
42 | 23 0.00
Average:
48 | 36 0.15
Partly Cloudy
Actual:
42 | 24 0.00
Average:
48 | 36 0.15
Rain
Actual:
36 | 32 0.21
Average:
48 | 36 0.14
Rain
Actual:
44 | 34 0.26
Average:
48 | 36 0.15
Rain
Actual:
46 | 36 0.24
Average:
48 | 36 0.15
Rain
Actual:
47 | 38 0.03
Average:
48 | 36 0.14
Rain
Actual:
43 | 37 0.15
Average:
49 | 36 0.15
Rain
Actual:
45 | 40 1.00
Average:
49 | 36 0.14
Rain
Actual:
48 | 43 0.47
Average:
49 | 36 0.14
Rain
Actual:
50 | 44 0.27
Average:
49 | 36 0.14
Rain
Actual:
52 | 43 T
Average:
49 | 36 0.14
 

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
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 40 32 23 30 26 22 100 78 56 30.48 30.45 30.37 10 5 0 20 7 25 0.00 Fog
2 41 37 32 24 22 21 72 59 46 30.36 30.30 30.24 10 10 10 30 18 36 0.00  
3 40 36 32 30 23 20 64 56 48 30.28 30.21 30.17 10 10 10 29 18 35 T Rain
4 42 38 34 34 31 26 100 85 70 30.38 30.29 30.21 10 8 3 21 9 25 0.02 Rain
5 38 36 34 30 28 26 82 76 70 30.25 30.21 30.19 10 10 7 29 12 33 0.02 Rain
6 40 37 34 38 34 30 92 87 82 30.27 30.20 30.09 10 7 3 16 7 18 0.19 Rain
7 53 46 39 48 45 37 93 85 77 30.23 30.11 29.99 10 10 5 25 12 32 0.07 Rain
8 55 50 44 48 46 42 100 86 71 30.21 30.08 29.93 10 8 2 21 11 26 0.14 Rain
9 53 45 36 44 39 34 92 82 71 30.00 29.89 29.71 10 10 6 22 8 30 0.22 Rain
10 40 37 33 36 34 33 92 86 79 30.12 30.08 30.01 10 9 4 8 2 9 0.16 Rain , Snow
11 40 35 29 34 30 26 100 80 59 30.32 30.23 30.13 10 5 0 8 2 9 0.00 Fog
12 34 30 26 29 27 25 92 87 82 30.43 30.37 30.33 7 4 2 9 2 12 0.00  
13 34 30 26 28 26 23 100 85 69 30.52 30.48 30.43 10 7 2 9 2 12 T  
14 34 32 29 33 28 25 100 89 78 30.59 30.56 30.52 8 3 1 9 3 10 0.03 Rain , Snow
15 38 36 34 34 33 32 100 93 85 30.69 30.65 30.59 10 6 0 9 3 10 0.01 Rain
16 37 36 34 34 33 32 100 95 89 30.68 30.60 30.52 10 4 1 6 1 7 0.00  
17 44 38 31 32 30 26 100 81 62 30.51 30.43 30.35 10 9 2 10 3 12 0.00  
18 46 36 26 31 28 24 92 75 58 30.35 30.32 30.28 10 8 4 6 1 7 0.00  
19 37 31 25 32 28 23 100 91 82 30.37 30.34 30.30 7 1 0 8 2 8 0.00 Fog
20 42 35 27 30 27 24 100 82 64 30.39 30.35 30.27 10 3 0 7 2 9 0.00 Fog
21 42 33 23 28 25 21 96 75 54 30.30 30.23 30.18 10 9 6 18 5 23 0.00  
22 42 33 24 26 23 21 88 70 51 30.18 30.07 29.96 10 9 7 16 7 21 0.00  
23 36 34 32 32 28 22 96 78 59 30.23 30.03 29.92 10 7 2 18 9 22 0.21 Rain
24 44 39 34 41 36 32 100 88 76 30.26 30.19 30.13 10 3 0 16 3 20 0.26 Rain
25 46 41 36 44 39 36 100 96 92 30.14 30.04 29.98 10 4 0 15 9 18 0.24 Fog , Rain
26 47 43 38 40 38 37 100 86 71 30.10 30.01 29.96 10 9 0 18 6 21 0.03 Rain
27 43 40 37 39 38 36 92 87 82 30.17 30.10 30.06 10 10 9 14 5 20 0.15 Rain
28 45 43 40 43 40 37 100 93 86 30.22 30.16 30.11 10 7 4 8 3 12 1.00 Rain
29 48 46 43 45 43 41 96 91 86 30.47 30.38 30.22 10 6 2 15 7 18 0.47 Rain
30 50 47 44 46 44 41 93 87 80 30.48 30.45 30.43 10 8 2 18 6 23 0.27 Rain
31 52 48 43 46 44 42 100 89 77 30.46 30.41 30.35 10 6 0 10 3 12 T Fog , Rain