Weather History for Seattle, WA

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Monday, September 23, 2013

  Actual Average Record
Temperature  
Mean Temperature 57 °F 60 °F  
Max Temperature 61 °F 68 °F 83 °F (1957)
Min Temperature 52 °F 51 °F 40 °F (1948)
Degree Days  
Heating Degree Days 8 6  
Month to date heating degree days 28 83  
Since 1 July heating degree days 43 168  
Cooling Degree Days 0 0  
Month to date cooling degree days 55 19  
Year to date cooling degree days 385 187  
Growing Degree Days 7 (Base 50)    
Moisture  
Dew Point 51 °F    
Average Humidity 81    
Maximum Humidity 89    
Minimum Humidity 72    
Precipitation  
Precipitation 0.11 in 0.05 in 0.72 in (2014)
Month to date precipitation 2.95 1.05  
Year to date precipitation 22.35 21.64  
Sea Level Pressure  
Sea Level Pressure 29.92 in    
Wind  
Wind Speed 10 mph (South)    
Max Wind Speed 18 mph    
Max Gust Speed 23 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily 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

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 55.9 °F 50.0 °F 80% 29.80 in 10.0 mi SW 11.5 mph 19.6 mph 0.01 in Rain Light Rain
1:53 AM 55.0 °F 51.1 °F 86% 29.81 in 10.0 mi South 10.4 mph - 0.00 in   Mostly Cloudy
2:53 AM 55.9 °F 51.1 °F 84% 29.83 in 10.0 mi SSW 11.5 mph - N/A   Overcast
3:53 AM 55.0 °F 50.0 °F 83% 29.84 in 10.0 mi South 12.7 mph - 0.01 in Rain Light Rain
4:53 AM 55.9 °F 51.1 °F 84% 29.84 in 7.0 mi South 13.8 mph - 0.01 in   Overcast
5:53 AM 55.9 °F 50.0 °F 80% 29.86 in 10.0 mi South 13.8 mph - N/A   Mostly Cloudy
6:53 AM 55.9 °F 50.0 °F 80% 29.87 in 10.0 mi South 10.4 mph - 0.00 in   Overcast
7:53 AM 55.9 °F 48.9 °F 77% 29.88 in 10.0 mi South 11.5 mph - N/A   Mostly Cloudy
8:53 AM 57.9 °F 48.9 °F 72% 29.89 in 10.0 mi South 10.4 mph - N/A   Overcast
9:53 AM 59.0 °F 50.0 °F 72% 29.91 in 10.0 mi South 12.7 mph - N/A   Overcast
10:53 AM 57.9 °F 52.0 °F 81% 29.93 in 10.0 mi SSW 8.1 mph - 0.04 in   Overcast
11:53 AM 60.1 °F 51.1 °F 72% 29.94 in 10.0 mi SSW 12.7 mph - 0.00 in   Overcast
12:53 PM 60.1 °F 51.1 °F 72% 29.95 in 10.0 mi SSW 11.5 mph 17.3 mph N/A   Overcast
1:53 PM 59.0 °F 54.0 °F 83% 29.96 in 10.0 mi SSW 9.2 mph - 0.04 in Rain Light Rain
2:53 PM 60.1 °F 53.1 °F 78% 29.95 in 10.0 mi South 11.5 mph - 0.00 in   Mostly Cloudy
3:53 PM 60.1 °F 53.1 °F 78% 29.96 in 10.0 mi South 12.7 mph - N/A   Mostly Cloudy
4:53 PM 57.9 °F 53.1 °F 84% 29.96 in 10.0 mi South 15.0 mph - 0.00 in   Mostly Cloudy
5:53 PM 57.9 °F 52.0 °F 81% 29.97 in 10.0 mi South 11.5 mph - 0.00 in   Mostly Cloudy
6:53 PM 57.0 °F 52.0 °F 83% 29.98 in 10.0 mi South 8.1 mph - N/A   Mostly Cloudy
7:53 PM 55.9 °F 51.1 °F 84% 29.99 in 10.0 mi SSE 6.9 mph - 0.01 in   Mostly Cloudy
8:53 PM 54.0 °F 50.0 °F 86% 30.00 in 10.0 mi SSE 6.9 mph - N/A   Scattered Clouds
9:53 PM 54.0 °F 50.0 °F 86% 30.00 in 10.0 mi SSE 5.8 mph - N/A   Scattered Clouds
10:53 PM 53.1 °F 48.9 °F 86% 30.00 in 10.0 mi South 4.6 mph - N/A   Scattered Clouds
11:53 PM 53.1 °F 48.9 °F 86% 29.99 in 10.0 mi South 6.9 mph - N/A   Scattered Clouds