Weather History for Portland, OR

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Monday, May 20, 2013

  Actual Average Record
Temperature  
Mean Temperature 61 °F 59 °F  
Max Temperature 73 °F 69 °F 91 °F (1963)
Min Temperature 48 °F 50 °F 37 °F (1975)
Degree Days  
Heating Degree Days 4 6  
Month to date heating degree days 74 163  
Since 1 July heating degree days 3841 4126  
Cooling Degree Days 0 1  
Month to date cooling degree days 15 1  
Year to date cooling degree days 15 2  
Growing Degree Days 10 (Base 50)    
Moisture  
Dew Point 45 °F    
Average Humidity 59    
Maximum Humidity 86    
Minimum Humidity 31    
Precipitation  
Precipitation 0.00 in 0.08 in 0.68 in (1998)
Month to date precipitation 0.51 1.55  
Year to date precipitation 8.91 16.50  
Snow  
Snow 0.00 in - - ()
Month to date snowfall 0.0  
Since 1 July snowfall 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.16 in    
Wind  
Wind Speed 3 mph (NNW)    
Max Wind Speed 9 mph    
Max Gust Speed 14 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

May. 20, 2013 Rise Set
Actual Time 5:33 AM PDT 8:40 PM PDT
Civil Twilight 4:58 AM PDT 9:16 PM PDT
Nautical Twilight 4:12 AM PDT 10:02 PM PDT
Astronomical Twilight 3:17 AM PDT 10:58 PM PDT
Moon 3:41 PM PDT 2:46 AM PDT
Length of Visible Light 16h 18m
Length of Day
15h 06m
Waxing Gibbous, 76% of the Moon is Illuminated
May 20
Waxing Gibbous
May 24
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 51.8 °F 44.6 °F 76% 30.36 in 10.0 mi NW 8.1 mph - N/A   Clear
1:53 AM 50.0 °F 44.1 °F 80% 30.36 in 10.0 mi NW 8.1 mph - N/A   Partly Cloudy
2:53 AM 48.9 °F 44.1 °F 83% 30.36 in 10.0 mi NNW 5.8 mph - N/A   Partly Cloudy
3:48 AM 48.2 °F 44.6 °F 87% 30.34 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:53 AM 48.9 °F 44.1 °F 83% 30.33 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:53 AM 48.2 °F 44.6 °F 87% 30.32 in 10.0 mi Calm Calm - N/A   Overcast
5:53 AM 48.9 °F 44.1 °F 83% 30.31 in 10.0 mi Calm Calm - N/A   Overcast
6:53 AM 50.0 °F 44.1 °F 80% 30.29 in 10.0 mi Calm Calm - N/A   Overcast
7:53 AM 51.1 °F 45.0 °F 80% 30.29 in 10.0 mi Calm Calm - N/A   Overcast
8:53 AM 54.0 °F 46.0 °F 75% 30.28 in 10.0 mi Calm Calm - N/A   Overcast
9:53 AM 54.0 °F 46.0 °F 75% 30.25 in 10.0 mi Calm Calm - N/A   Overcast
10:53 AM 55.0 °F 46.0 °F 72% 30.23 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
11:36 AM 57.2 °F 46.4 °F 67% 30.22 in 10.0 mi NW 5.8 mph - N/A   Scattered Clouds
11:53 AM 57.9 °F 46.9 °F 67% 30.21 in 10.0 mi Variable 4.6 mph - N/A   Scattered Clouds
12:53 PM 60.1 °F 46.0 °F 60% 30.18 in 10.0 mi Variable 5.8 mph - N/A   Partly Cloudy
1:53 PM 63.0 °F 46.0 °F 54% 30.14 in 10.0 mi North 3.5 mph - N/A   Partly Cloudy
2:53 PM 66.0 °F 45.0 °F 47% 30.11 in 10.0 mi Variable 3.5 mph - N/A   Scattered Clouds
3:53 PM 70.0 °F 37.0 °F 30% 30.06 in 10.0 mi Calm Calm - N/A   Scattered Clouds
4:53 PM 72.0 °F 41.0 °F 33% 30.02 in 10.0 mi North 3.5 mph - N/A   Scattered Clouds
5:53 PM 72.0 °F 41.0 °F 33% 29.99 in 10.0 mi NW 4.6 mph - N/A   Scattered Clouds
6:53 PM 71.6 °F 42.8 °F 35% 29.96 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:53 PM 69.1 °F 42.1 °F 38% 29.94 in 10.0 mi NW 3.5 mph - N/A   Scattered Clouds
8:53 PM 66.0 °F 46.9 °F 50% 29.93 in 10.0 mi North 4.6 mph - N/A   Mostly Cloudy
9:53 PM 62.1 °F 48.0 °F 60% 29.93 in 10.0 mi NNW 4.6 mph - N/A   Scattered Clouds
10:53 PM 59.0 °F 46.9 °F 64% 29.92 in 10.0 mi NW 6.9 mph - N/A   Scattered Clouds
11:53 PM 57.0 °F 46.9 °F 69% 29.92 in 10.0 mi NW 6.9 mph - N/A   Mostly Cloudy