Weather History for San Juan, PR

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Thursday, October 17, 2013

  Actual Average Record
Temperature  
Mean Temperature 84 °F 83 °F  
Max Temperature 90 °F 89 °F 95 °F (1980)
Min Temperature 77 °F 77 °F 69 °F (1908)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 July heating degree days 0 0  
Cooling Degree Days 19 18  
Month to date cooling degree days 328 306  
Year to date cooling degree days 4833 4725  
Growing Degree Days 34 (Base 50)    
Moisture  
Dew Point 72 °F    
Average Humidity 69    
Maximum Humidity 82    
Minimum Humidity 55    
Precipitation  
Precipitation 0.00 in 0.18 in 2.53 in (1958)
Month to date precipitation 1.55 2.80  
Year to date precipitation 66.79 42.19  
Sea Level Pressure  
Sea Level Pressure 29.92 in    
Wind  
Wind Speed 4 mph (East)    
Max Wind Speed 14 mph    
Max Gust Speed 18 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Astronomy

Oct. 17, 2013 Rise Set
Actual Time 6:18 AM AST 5:59 PM AST
Civil Twilight 5:56 AM AST 6:21 PM AST
Nautical Twilight 5:30 AM AST 6:47 PM AST
Astronomical Twilight 5:05 AM AST 7:12 PM AST
Moon 5:06 PM AST (10/17) 4:55 AM AST (10/17)
Length of Visible Light 12h 25m
Length of Day
11h 41m
Waxing Gibbous, 98% of the Moon is Illuminated
Oct 17
Waxing Gibbous
Oct 18
Full
Oct 26
Last Quarter
Nov 3
New
Nov 10
First Quarter

Hourly Weather History & Observations

Time (AST) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 78.1 °F - 71.1 °F 79% 29.94 in 10.0 mi South 3.5 mph - N/A   Scattered Clouds
1:56 AM 79.0 °F - 72.0 °F 79% 29.93 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:56 AM 79.0 °F - 71.1 °F 77% 29.90 in 10.0 mi SSW 3.5 mph - N/A   Scattered Clouds
3:56 AM 78.1 °F - 71.1 °F 79% 29.89 in 10.0 mi Calm Calm - N/A   Scattered Clouds
4:56 AM 78.1 °F - 71.1 °F 79% 29.90 in 10.0 mi Calm Calm - N/A   Clear
5:56 AM 77.0 °F - 71.1 °F 82% 29.91 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:56 AM 78.1 °F - 70.0 °F 76% 29.93 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:56 AM 80.1 °F 83.6 °F 71.1 °F 74% 29.93 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:56 AM 84.0 °F 88.4 °F 70.0 °F 63% 29.96 in 10.0 mi East 3.5 mph - N/A   Scattered Clouds
9:56 AM 87.1 °F 92.0 °F 70.0 °F 57% 29.98 in 10.0 mi SW 3.5 mph - N/A   Scattered Clouds
10:56 AM 88.0 °F 93.8 °F 71.1 °F 57% 29.97 in 10.0 mi North 4.6 mph - N/A   Scattered Clouds
11:56 AM 86.0 °F 93.0 °F 73.0 °F 65% 29.95 in 10.0 mi NNE 10.4 mph - N/A   Scattered Clouds
12:56 PM 87.1 °F 95.4 °F 73.9 °F 65% 29.93 in 10.0 mi ENE 11.5 mph - N/A   Scattered Clouds
1:56 PM 86.0 °F 93.0 °F 73.0 °F 65% 29.89 in 10.0 mi NE 11.5 mph - N/A   Mostly Cloudy
2:56 PM 86.0 °F 93.0 °F 73.0 °F 65% 29.87 in 10.0 mi NE 10.4 mph - N/A   Scattered Clouds
3:56 PM 86.0 °F 93.8 °F 73.9 °F 67% 29.85 in 10.0 mi NE 11.5 mph - N/A   Scattered Clouds
4:56 PM 84.0 °F 90.2 °F 73.0 °F 69% 29.88 in 10.0 mi ENE 11.5 mph - N/A   Scattered Clouds
5:56 PM 82.9 °F 88.8 °F 73.0 °F 72% 29.89 in 10.0 mi East 8.1 mph - N/A   Scattered Clouds
6:56 PM 82.9 °F 88.8 °F 73.0 °F 72% 29.91 in 10.0 mi ESE 5.8 mph - N/A   Scattered Clouds
7:56 PM 84.0 °F 89.6 °F 72.0 °F 67% 29.93 in 10.0 mi South 3.5 mph - N/A   Scattered Clouds
8:56 PM 82.9 °F 88.8 °F 73.0 °F 72% 29.94 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:56 PM 82.9 °F 88.8 °F 73.0 °F 72% 29.95 in 10.0 mi SSW 3.5 mph - N/A   Scattered Clouds
10:56 PM 82.0 °F 87.4 °F 73.0 °F 74% 29.95 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:56 PM 81.0 °F 85.8 °F 73.0 °F 77% 29.94 in 10.0 mi Calm Calm - N/A   Scattered Clouds