Weather History for Portland, OR

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 95 °F 73 °F 56 °F
Mean Temperature 79 °F 65 °F 53 °F
Min Temperature 64 °F 57 °F 47 °F
Degree Days  
Heating Degree Days (base 65) 12 3 0 80
Cooling Degree Days (base 65) 14 3 0 87
Growing Degree Days (base 50) 29 15 2 445
Dew Point  
Dew Point 65 °F 55 °F 44 °F
Precipitation  
Precipitation 1.21 in 0.17 in 0.00 in 4.70 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 33 mph 6 mph 0 mph
Gust Wind 43 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.17 in 29.91 in 29.37 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 09, 2013 Rise Set
Actual Time 6:41 AM PDT 7:32 PM PDT
Civil Twilight 6:11 AM PDT 8:02 PM PDT
Nautical Twilight 5:35 AM PDT 8:38 PM PDT
Astronomical Twilight 4:58 AM PDT 9:15 PM PDT
Moon 11:25 AM PDT (9/9) 9:36 PM PDT (9/9)
Length of Visible Light 13h 50m
Length of Day
12h 50m
Waxing Crescent, 20% of the Moon is Illuminated
Sep 9
Waxing Crescent
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New

Weather History Calendar

Precipitation Actual month total 4.70 Normal Month Total: 1.47
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Scattered Clouds
Actual:
85 | 63 0.00
Average:
79 | 56 0.03
Thunderstorm
Actual:
80 | 64 0.00
Average:
79 | 56 0.04
Thunderstorm
Actual:
80 | 61 0.11
Average:
79 | 56 0.03
Mostly Cloudy
Actual:
73 | 62 0.00
Average:
79 | 56 0.04
Rain
Actual:
70 | 62 0.11
Average:
79 | 56 0.04
Rain
Actual:
70 | 59 0.99
Average:
78 | 55 0.05
Partly Cloudy
Actual:
81 | 56 0.00
Average:
78 | 55 0.04
Scattered Clouds
Actual:
84 | 60 0.00
Average:
78 | 55 0.04
Partly Cloudy
Actual:
83 | 62 0.00
Average:
78 | 55 0.04
Scattered Clouds
Actual:
91 | 62 0.00
Average:
78 | 55 0.04
Clear
Actual:
95 | 63 0.00
Average:
77 | 54 0.05
Partly Cloudy
Actual:
82 | 61 0.00
Average:
77 | 54 0.04
Partly Cloudy
Actual:
74 | 61 0.00
Average:
77 | 54 0.04
Rain
Actual:
80 | 62 T
Average:
77 | 54 0.05
Rain
Actual:
68 | 61 0.02
Average:
76 | 53 0.04
Mostly Cloudy
Actual:
69 | 61 T
Average:
76 | 53 0.05
Partly Cloudy
Actual:
68 | 57 0.00
Average:
76 | 53 0.05
Partly Cloudy
Actual:
73 | 55 T
Average:
76 | 53 0.05
Fog
Actual:
81 | 47 0.00
Average:
75 | 52 0.05
Partly Cloudy
Actual:
74 | 52 0.00
Average:
75 | 52 0.06
Partly Cloudy
Actual:
66 | 56 0.20
Average:
75 | 52 0.05
Rain
Actual:
62 | 57 0.12
Average:
74 | 52 0.06
Rain
Actual:
64 | 56 0.15
Average:
74 | 51 0.06
Rain
Actual:
60 | 51 0.22
Average:
73 | 51 0.05
Rain
Actual:
62 | 50 0.01
Average:
73 | 51 0.06
Partly Cloudy
Actual:
67 | 48 0.00
Average:
73 | 51 0.07
Rain
Actual:
57 | 49 0.09
Average:
72 | 50 0.06
Rain
Actual:
66 | 56 0.96
Average:
72 | 50 0.06
Rain
Actual:
56 | 53 1.21
Average:
71 | 50 0.07
Rain
Actual:
60 | 51 0.51
Average:
71 | 50 0.06
 

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
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 85 74 63 57 54 46 78 53 27 29.91 29.86 29.78 10 10 10 10 3 15 0.00  
2 80 72 64 60 57 52 81 60 39 29.92 29.89 29.87 10 10 10 16 5 20 0.00 Rain , Thunderstorm
3 80 71 61 63 58 53 93 68 42 30.00 29.97 29.93 10 10 8 10 3 14 0.11 Rain , Thunderstorm
4 73 68 62 61 59 58 84 73 61 30.06 30.02 29.98 10 10 10 12 3 15 0.00  
5 70 66 62 63 59 57 87 80 73 30.04 30.00 29.96 10 8 1 21 4 29 0.11 Rain
6 70 65 59 61 58 56 97 79 61 30.13 30.08 30.02 10 8 3 16 8 20 0.99 Rain
7 81 69 56 60 58 55 100 73 45 30.11 30.03 29.96 10 9 4 13 4 15 0.00  
8 84 72 60 63 59 57 90 67 43 30.07 30.03 29.98 10 10 10 16 7 23 0.00  
9 83 73 62 64 61 59 93 70 47 30.04 29.99 29.92 10 10 10 17 5 23 0.00  
10 91 77 62 65 62 60 93 67 41 29.93 29.87 29.78 10 10 10 14 6 16 0.00  
11 95 79 63 64 62 59 93 62 31 29.93 29.86 29.82 10 10 10 12 7 14 0.00  
12 82 72 61 64 60 59 97 74 51 30.01 29.96 29.89 10 10 7 9 3 28 0.00  
13 74 68 61 61 59 57 90 77 64 29.98 29.92 29.85 10 10 9 10 5 13 0.00  
14 80 71 62 63 61 60 93 74 54 29.86 29.80 29.70 10 9 3 10 5 12 T Rain
15 68 65 61 63 60 57 100 89 78 29.89 29.79 29.72 10 8 2 9 4 13 0.02 Rain
16 69 65 61 58 56 55 90 77 63 29.98 29.94 29.89 10 10 10 13 7 16 T  
17 68 63 57 56 51 46 84 65 45 30.01 29.91 29.88 10 10 10 16 7 20 0.00  
18 73 64 55 53 50 45 86 62 38 30.10 30.06 30.02 10 10 10 8 2 12 T  
19 81 64 47 56 50 46 100 65 30 30.02 29.91 29.78 10 8 0 8 3 10 0.00 Fog
20 74 63 52 55 52 48 93 71 49 29.77 29.70 29.66 10 10 10 16 5 21 0.00  
21 66 61 56 57 55 53 93 80 67 29.78 29.73 29.69 10 10 10 17 3 22 0.20  
22 62 60 57 56 54 49 93 77 60 29.86 29.76 29.69 10 9 2 28 13 37 0.12 Rain
23 64 60 56 56 54 52 86 77 67 30.01 29.95 29.88 10 10 4 16 8 20 0.15 Rain
24 60 56 51 54 51 46 93 83 72 29.99 29.93 29.87 10 9 3 15 5 18 0.22 Rain
25 62 56 50 50 48 44 96 77 57 30.05 29.95 29.87 10 10 5 12 5 15 0.01 Rain
26 67 58 48 49 47 45 93 71 48 30.17 30.10 30.05 10 10 10 12 2 14 0.00  
27 57 53 49 54 50 47 89 83 77 30.17 30.06 29.92 10 10 5 21 8 29 0.09 Rain
28 66 61 56 58 55 51 93 86 78 29.90 29.67 29.50 10 8 0 33 16 43 0.96 Rain
29 56 55 53 57 52 46 93 90 86 29.69 29.60 29.37 10 7 2 23 14 31 1.21 Rain
30 60 56 51 52 49 46 89 76 62 30.01 29.86 29.64 10 9 4 23 12 28 0.51 Rain