Seattle, WA

9:54 AM PDT on June 22, 2017 (GMT -0700)
Seattle-Tacoma International

Weather History for KSEA - September, 2013

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 93 °F 70 °F 57 °F
Mean Temperature 77 °F 64 °F 54 °F
Min Temperature 63 °F 56 °F 45 °F
Degree Days  
Heating Degree Days (base 65) 11 3 0 96
Cooling Degree Days (base 65) 12 2 0 55
Growing Degree Days (base 50) 27 13 2 398
Dew Point  
Dew Point 61 °F 54 °F 42 °F
Precipitation  
Precipitation 1.71 in 0.24 in 0.00 in 6.17 in
Snowdepth - - - -
Wind  
Wind 28 mph 7 mph 0 mph
Gust Wind 54 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.17 in 29.92 in 29.19 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 23, 2013 Rise Set
Actual Time 6:57 AM PDT 7:04 PM PDT
Civil Twilight 6:27 AM PDT 7:34 PM PDT
Nautical Twilight 5:51 AM PDT 8:10 PM PDT
Astronomical Twilight 5:14 AM PDT 8:47 PM PDT
Moon 9:20 PM PDT (9/23) 11:41 AM PDT (9/23)
Length of Visible Light 13h 07m
Length of Day
12h 06m
Waning Gibbous, 80% of the Moon is Illuminated
Sep 23
Waning Gibbous
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

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 82 71 60 57 55 52 84 62 40 29.93 29.89 29.84 10 10 10 12 6 15 0.00  
2 82 73 63 57 54 53 78 60 42 29.98 29.92 29.90 10 10 10 12 5 16 T  
3 77 70 62 61 59 55 93 72 50 30.06 30.01 29.96 10 8 1 8 4 13 0.09 Rain
4 73 67 61 59 58 57 90 76 61 30.09 30.06 30.03 10 9 6 15 5 18 0.01  
5 68 64 60 60 58 55 93 83 73 30.06 30.03 29.96 10 7 1 14 6 17 1.09 Rain , Thunderstorm
6 71 66 61 61 59 57 93 83 73 30.15 30.05 29.97 10 6 1 14 6 17 0.84 Rain , Thunderstorm
7 74 69 63 59 58 56 90 74 57 30.14 30.10 30.06 10 10 10 12 4 15 0.00  
8 80 69 58 60 57 55 90 68 45 30.15 30.11 30.07 10 9 6 10 3 17 0.00  
9 79 68 57 59 57 54 93 71 48 30.10 30.06 30.01 10 5 0 10 5 13 0.00 Fog
10 80 70 59 60 58 55 90 71 52 30.03 29.98 29.92 10 8 0 14 8 36 0.00 Fog
11 93 77 61 61 57 51 84 55 26 29.97 29.94 29.91 10 10 10 12 5 15 0.00  
12 78 69 59 60 58 57 90 69 48 30.04 29.99 29.95 10 5 0 9 4 10 0.00 Fog
13 66 63 60 59 58 57 97 88 78 30.01 29.97 29.91 10 5 0 9 4 12 0.00 Fog
14 71 66 60 59 58 56 84 77 70 29.91 29.85 29.76 10 8 3 17 3 54 0.00  
15 66 62 58 61 58 55 93 86 78 29.86 29.79 29.74 10 6 0 13 5 16 0.13 Fog , Rain , Thunderstorm
16 71 65 59 58 56 50 84 71 57 29.96 29.93 29.83 10 10 2 16 10 20 0.01 Rain
17 64 61 57 54 50 47 86 73 60 29.97 29.92 29.89 10 10 10 13 5 17 T  
18 70 63 56 54 50 47 86 65 44 30.11 30.07 29.95 10 10 10 10 6 15 0.00  
19 78 64 50 52 49 44 77 56 35 30.07 29.93 29.81 10 10 10 9 3 13 0.00  
20 74 65 56 56 51 47 84 64 44 29.79 29.70 29.64 10 9 2 20 7 26 0.14 Rain
21 70 63 56 56 53 50 93 72 51 29.76 29.72 29.67 10 10 10 10 6 14 T  
22 63 60 56 54 52 49 86 75 64 29.78 29.69 29.60 10 8 2 22 12 28 0.53 Rain
23 61 57 52 54 51 49 89 81 72 30.00 29.92 29.80 10 10 7 18 10 23 0.11 Rain
24 64 57 50 50 48 45 89 72 55 29.99 29.93 29.87 10 10 10 13 6 16 T  
25 61 55 49 48 47 42 89 72 55 30.06 29.96 29.87 10 10 7 15 7 25 0.08 Rain
26 63 54 45 48 46 42 93 74 55 30.17 30.12 30.06 10 6 0 10 5 14 0.00 Fog
27 57 54 51 52 49 45 83 78 72 30.15 30.02 29.89 10 9 3 18 10 23 0.04 Rain
28 62 58 53 57 53 47 93 85 77 29.87 29.57 29.38 10 6 1 25 13 36 1.71 Rain
29 58 55 52 51 48 45 86 79 71 29.60 29.48 29.19 10 9 6 28 16 39 0.66 Rain
30 57 54 50 50 47 43 83 78 72 29.96 29.76 29.50 10 9 3 25 14 35 0.73 Rain