Weather History for Seattle, WA

Change the Weather History Date:

Thursday, April 18, 2013

  Actual Average Record
Temperature  
Mean Temperature 49 °F 51 °F  
Max Temperature 53 °F 59 °F 77 °F (1962)
Min Temperature 44 °F 42 °F 34 °F (1950)
Degree Days  
Heating Degree Days 16 14  
Month to date heating degree days 273 280  
Since 1 July heating degree days 3937 4108  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 42 °F    
Average Humidity 73    
Maximum Humidity 76    
Minimum Humidity 70    
Precipitation  
Precipitation 0.21 in 0.09 in 0.40 in (1970)
Month to date precipitation 4.76 1.77  
Year to date precipitation 13.24 14.56  
Snow  
Snow 0.00 in - - ()
Month to date snowfall 0.0  
Since 1 July snowfall 0.6  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.41 in    
Wind  
Wind Speed 9 mph (SSW)    
Max Wind Speed 16 mph    
Max Gust Speed 22 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Apr. 18, 2013 Rise Set
Actual Time 6:14 AM PDT 8:03 PM PDT
Civil Twilight 5:41 AM PDT 8:36 PM PDT
Nautical Twilight 5:02 AM PDT 9:16 PM PDT
Astronomical Twilight 4:18 AM PDT 10:00 PM PDT
Moon 12:27 PM PDT (4/18) 2:26 AM PDT (4/18)
Length of Visible Light 14h 54m
Length of Day
13h 48m
First Quarter, 53% of the Moon is Illuminated
Apr 18
First Quarter
Apr 25
Full
May 2
Last Quarter
May 9
New
May 17
First Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:17 AM 44.6 °F 39.7 °F 37.4 °F 76% 30.45 in 10.0 mi SW 9.2 mph - N/A   Overcast
12:53 AM 44.1 °F 39.5 °F 36.0 °F 73% 30.48 in 10.0 mi SW 8.1 mph - N/A   Mostly Cloudy
1:53 AM 44.1 °F 41.5 °F 36.0 °F 73% 30.48 in 10.0 mi SW 4.6 mph - N/A   Overcast
2:02 AM 44.6 °F 42.2 °F 37.4 °F 76% 30.45 in 10.0 mi WSW 4.6 mph - N/A   Overcast
2:53 AM 45.0 °F 40.1 °F 37.0 °F 74% 30.47 in 10.0 mi SSW 9.2 mph - N/A   Overcast
3:53 AM 44.1 °F 40.8 °F 37.0 °F 76% 30.48 in 10.0 mi South 5.8 mph - N/A   Overcast
4:53 AM 44.1 °F 40.1 °F 37.0 °F 76% 30.48 in 10.0 mi South 6.9 mph - N/A   Overcast
5:53 AM 44.1 °F 40.1 °F 37.9 °F 79% 30.47 in 10.0 mi SSE 6.9 mph - N/A   Overcast
6:53 AM 45.0 °F 40.6 °F 37.9 °F 76% 30.47 in 10.0 mi South 8.1 mph - 0.00 in   Overcast
7:53 AM 45.0 °F 41.2 °F 39.0 °F 80% 30.48 in 10.0 mi South 6.9 mph - 0.00 in Rain Light Rain
8:53 AM 46.0 °F 41.9 °F 39.0 °F 76% 30.49 in 10.0 mi South 8.1 mph - 0.00 in   Overcast
9:12 AM 46.4 °F 42.4 °F 39.2 °F 76% 30.46 in 10.0 mi South 8.1 mph - N/A   Overcast
9:53 AM 46.9 °F - 39.0 °F 74% 30.49 in 10.0 mi South 8.1 mph - N/A   Overcast
10:18 AM 46.4 °F 41.5 °F 39.2 °F 76% 30.46 in 10.0 mi South 10.4 mph - N/A   Overcast
10:53 AM 48.0 °F - 39.9 °F 74% 30.48 in 10.0 mi South 9.2 mph - 0.00 in   Overcast
11:53 AM 48.9 °F - 41.0 °F 74% 30.48 in 10.0 mi SSW 8.1 mph - N/A   Overcast
12:53 PM 52.0 °F - 42.1 °F 69% 30.46 in 10.0 mi South 9.2 mph - N/A   Overcast
1:53 PM 52.0 °F - 41.0 °F 66% 30.44 in 10.0 mi SSW 8.1 mph - N/A   Overcast
2:53 PM 51.1 °F - 45.0 °F 80% 30.43 in 10.0 mi SSW 8.1 mph - 0.01 in Rain Light Rain
3:53 PM 51.1 °F - 45.0 °F 80% 30.41 in 10.0 mi SSW 6.9 mph - 0.02 in Rain Light Rain
4:53 PM 50.0 °F - 46.0 °F 86% 30.38 in 9.0 mi South 6.9 mph - 0.05 in Rain Light Rain
5:53 PM 50.0 °F - 46.0 °F 86% 30.37 in 8.0 mi South 8.1 mph - 0.06 in Rain Light Rain
6:53 PM 51.1 °F - 46.9 °F 86% 30.36 in 10.0 mi South 10.4 mph - 0.04 in Rain Light Rain
7:53 PM 50.0 °F - 46.9 °F 89% 30.33 in 10.0 mi South 12.7 mph - 0.01 in Rain Light Rain
8:10 PM 50.0 °F - 46.4 °F 87% 30.30 in 10.0 mi South 12.7 mph - 0.00 in Rain Light Rain
8:53 PM 50.0 °F - 46.0 °F 86% 30.32 in 7.0 mi SSW 13.8 mph 21.9 mph 0.00 in Rain Light Rain
9:53 PM 50.0 °F - 46.0 °F 86% 30.31 in 10.0 mi South 11.5 mph - 0.00 in   Overcast
10:13 PM 51.8 °F - 46.4 °F 82% 30.27 in 10.0 mi South 16.1 mph 21.9 mph N/A   Overcast
10:44 PM 50.0 °F - 46.4 °F 87% 30.26 in 10.0 mi SSW 13.8 mph - 0.00 in Rain Light Rain
10:53 PM 50.0 °F - 46.0 °F 86% 30.28 in 10.0 mi South 15.0 mph 21.9 mph 0.00 in   Overcast
11:53 PM 50.0 °F - 46.0 °F 86% 30.25 in 10.0 mi South 11.5 mph - 0.01 in Rain Light Rain