Weather History for KPDX - September, 2012

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Month of September, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 95 °F 79 °F 63 °F
Mean Temperature 76 °F 66 °F 59 °F
Min Temperature 60 °F 54 °F 47 °F
Degree Days  
Heating Degree Days (base 65) 6 1 0 40
Cooling Degree Days (base 65) 11 3 0 79
Growing Degree Days (base 50) 26 16 9 473
Dew Point  
Dew Point 60 °F 50 °F 27 °F
Precipitation  
Precipitation 0.04 in 0.00 in 0.00 in 0.04 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 24 mph 5 mph 0 mph
Gust Wind 30 mph 19 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.36 in 30.09 in 29.87 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 20, 2012 Rise Set
Actual Time 6:55 AM PDT 7:10 PM PDT
Civil Twilight 6:26 AM PDT 7:40 PM PDT
Nautical Twilight 5:51 AM PDT 8:15 PM PDT
Astronomical Twilight 5:15 AM PDT 8:50 PM PDT
Moon 12:37 PM PDT (9/20) 9:59 PM PDT (9/20)
Length of Visible Light 13h 14m
Length of Day
12h 15m
Waxing Crescent, 28% of the Moon is Illuminated
Sep 20
Waxing Crescent
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter
Oct 15
New

Daily Weather History & Observations

2012 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 76 63 50 49 47 44 83 58 33 30.15 30.11 30.03 10 10 10 10 5 15 0.00  
2 77 65 52 53 48 42 89 60 31 30.21 30.15 30.09 10 10 10 13 5 22 0.00  
3 79 67 55 54 51 47 86 61 35 30.15 30.11 30.05 10 10 10 18 6 24 0.00  
4 84 71 57 53 51 48 80 55 29 30.17 30.10 30.03 10 10 10 17 6 23 0.00  
5 87 72 57 55 52 47 80 52 24 30.05 29.97 29.87 10 10 10 13 4 16 0.00  
6 90 74 57 55 52 45 86 54 21 30.00 29.95 29.91 10 10 10 12 4 15 0.00  
7 95 76 57 55 50 42 86 52 17 30.08 30.02 29.96 10 10 10 14 4 18 0.00  
8 81 70 59 58 54 51 80 60 39 30.03 29.99 29.93 10 10 10 12 5 14 0.00 Thunderstorm
9 69 62 55 52 48 46 72 59 45 30.08 30.05 30.01 10 10 10 12 7 18 0.00  
10 70 63 56 55 47 41 80 58 36 30.22 30.14 30.05 10 10 2 22 9 30 0.04 Rain
11 73 60 47 45 42 39 80 57 34 30.27 30.22 30.16 10 10 10 20 7 24 0.00  
12 83 67 50 51 38 27 71 43 14 30.25 30.18 30.11 10 10 8 24 11 29 0.00  
13 89 71 52 50 44 37 77 47 17 30.14 30.08 30.00 10 10 10 12 6 14 0.00  
14 87 71 54 55 49 42 86 54 21 30.07 30.03 29.96 10 10 10 9 4 13 0.00  
15 82 68 54 55 49 39 86 57 28 30.15 30.12 30.06 10 10 10 17 7 23 0.00  
16 82 67 51 55 49 40 89 60 30 30.19 30.11 30.04 10 10 10 12 5 15 0.00  
17 90 71 51 60 52 47 96 60 23 30.06 30.01 29.94 10 10 10 8 3 14 0.00  
18 88 71 54 57 53 47 93 61 28 30.10 30.02 29.97 10 9 7 12 4 14 0.00  
19 73 65 56 57 54 53 93 75 57 30.14 30.11 30.05 10 8 2 8 3 10 0.00  
20 63 59 55 55 54 53 93 83 72 30.12 30.10 30.08 10 6 1 8 3 10 T  
21 65 62 58 55 53 50 93 78 63 30.16 30.14 30.12 10 10 5 9 4 13 T Rain
22 72 61 49 51 48 44 89 65 41 30.18 30.13 30.08 10 10 10 10 3 14 0.00  
23 72 60 48 55 50 47 93 70 47 30.14 30.11 30.09 10 10 10 7 2 9 0.00  
24 73 62 51 55 53 49 93 71 49 30.15 30.11 30.07 10 10 8 12 3 14 0.00 Fog
25 72 64 55 55 50 47 87 66 44 30.14 30.10 30.07 10 10 10 13 7 - 0.00  
26 74 62 50 52 49 46 93 66 38 30.11 30.06 29.98 10 9 2 13 5 17 0.00  
27 81 66 51 54 51 47 83 60 36 30.03 29.96 29.89 10 10 10 8 4 10 0.00  
28 83 72 60 58 54 47 84 56 28 30.01 29.95 29.91 10 10 10 9 3 13 0.00  
29 75 65 55 58 49 37 90 58 25 30.27 30.15 30.02 10 10 10 14 7 17 0.00  
30 75 62 49 47 44 41 86 60 33 30.36 30.30 30.27 10 10 10 16 5 20 0.00