Seattle Boeing, WA

11:14 AM PDT on May 29, 2020 (GMT -0700)
Boeing Field-King County International

Weather History for KBFI - September, 2019

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Month of September, 2019

  Max Avg Min Sum
Temperature  
Max Temperature 82 °F 70 °F 55 °F
Mean Temperature 72 °F 63 °F 50 °F
Min Temperature 64 °F 57 °F 41 °F
Degree Days  
Heating Degree Days (base 65) 15 3 0 92
Cooling Degree Days (base 65) 7 1 0 36
Growing Degree Days (base 50) 22 13 0 386
Dew Point  
Dew Point 60 °F 53 °F 29 °F
Precipitation  
Precipitation 0.41 in 0.03 in 0.00 in 0.97 in
Snowdepth - - - -
Wind  
Wind 22 mph 5 mph 0 mph
Gust Wind 33 mph 20 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.31 in 29.99 in 29.72 in

Monthly Weather History Graph

Monthly Weather History Graph

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Astronomy

Sep. 12, 2019 Rise Set
Actual Time 6:42 AM PDT 7:27 PM PDT
Civil Twilight 6:11 AM PDT 7:58 PM PDT
Nautical Twilight 5:34 AM PDT 8:35 PM PDT
Astronomical Twilight 4:55 AM PDT 9:14 PM PDT
Moon 7:23 PM PDT (9/12) 4:56 AM PDT (9/12)
Length of Visible Light 13h 47m
Length of Day
12h 45m
Waxing Gibbous, 98% of the Moon is Illuminated
Sep 12
Waxing Gibbous
Sep 13
Full
Sep 21
Last Quarter
Sep 28
New
Oct 5
First Quarter

Daily Weather History & Observations

2019 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 80 72 64 58 56 54 75 61 40 30.03 29.99 29.96 10 10 10 13 5 - 0.00  
2 77 69 61 58 56 53 84 67 43 30.10 30.05 30.00 10 10 10 12 3 20 0.00  
3 82 70 60 57 56 55 83 63 41 30.05 30.02 29.97 10 10 10 9 2 - 0.00  
4 75 68 61 56 55 54 81 68 48 30.11 30.05 30.00 10 10 10 7 3 - 0.00  
5 79 68 60 57 55 54 83 63 47 30.03 29.98 29.91 10 10 10 10 3 - 0.00  
6 80 70 62 58 57 55 84 66 48 30.13 30.06 29.96 10 10 10 13 5 - 0.00  
7 68 65 62 59 56 54 87 75 65 30.10 30.01 29.95 10 9 2 12 5 16 0.41 Rain , Thunderstorm
8 73 66 60 59 57 54 90 79 53 29.98 29.91 29.85 10 8 2 12 8 - 0.00 Rain
9 69 64 61 59 57 56 90 81 65 29.90 29.87 29.84 10 9 2 12 5 20 0.06 Rain
10 72 66 60 57 55 52 90 75 51 30.03 29.94 29.90 10 10 10 8 4 - 0.00  
11 73 65 57 55 53 51 90 69 46 30.19 30.14 30.05 10 10 10 9 4 - 0.00  
12 80 68 59 60 53 48 87 61 35 30.18 30.10 30.01 10 10 7 10 6 18 0.12 Rain
13 71 66 62 60 57 55 87 75 59 30.15 30.11 30.07 10 10 10 13 8 22 0.00  
14 68 64 61 57 55 53 87 73 61 30.07 29.95 29.80 10 10 7 12 7 - 0.01 Rain
15 62 60 57 58 55 53 90 84 75 29.78 29.75 29.72 10 8 2 12 9 18 0.07 Rain
16 69 60 52 54 52 48 97 79 49 29.86 29.82 29.78 10 8 0 16 5 - 0.00 Fog , Rain
17 62 58 55 56 53 50 90 83 75 29.84 29.75 29.72 10 9 3 12 8 - 0.11 Rain
18 68 60 55 55 53 50 93 78 54 30.00 29.87 29.77 10 10 6 9 3 - 0.08 Rain
19 71 62 53 55 52 50 93 74 51 30.09 30.06 30.01 10 10 10 7 2 - 0.00 Rain
20 68 63 60 56 55 53 86 76 61 30.14 30.10 30.06 10 10 10 8 4 - 0.00  
21 68 62 57 56 54 52 87 72 59 30.16 30.08 29.97 10 10 10 7 4 - 0.00  
22 64 62 59 60 57 53 90 84 75 30.03 29.90 29.85 10 9 3 10 6 - 0.01 Rain
23 62 58 55 55 52 50 89 78 65 30.23 30.15 30.03 10 9 3 15 9 25 0.01 Rain
24 70 64 59 56 53 48 86 71 51 30.28 30.22 30.17 10 10 7 12 7 - 0.00  
25 69 62 55 52 49 47 84 65 47 30.31 30.23 30.03 10 10 8 12 3 - 0.00  
26 69 64 60 58 53 47 93 72 54 30.00 29.94 29.88 10 8 1 22 8 33 0.02 Rain
27 64 56 48 53 48 41 94 77 46 29.98 29.91 29.81 10 8 2 10 6 28 0.03 Rain
28 60 54 48 45 42 35 87 69 41 29.87 29.84 29.81 10 10 8 12 3 18 0.00 Rain
29 55 50 45 44 40 35 86 68 57 30.02 29.93 29.85 10 10 9 6 2 - 0.04 Rain
30 60 50 41 38 34 29 86 59 32 30.17 30.10 30.03 10 10 10 9 2 - 0.00