Weather History for San Juan, PR

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Thursday, September 1, 2011

  Actual Average Record
Temperature  
Mean Temperature 82 °F 84 °F  
Max Temperature 88 °F 89 °F 97 °F (1981)
Min Temperature 76 °F 78 °F 70 °F (1942)
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 17 19  
Month to date cooling degree days 17 19  
Year to date cooling degree days 3687 3883  
Growing Degree Days 31 (Base 50)    
Moisture  
Dew Point 73 °F    
Average Humidity 73    
Maximum Humidity 85    
Minimum Humidity 61    
Precipitation  
Precipitation 1.16 in 0.20 in 3.19 in (1899)
Month to date precipitation 1.16 0.20  
Year to date precipitation 64.26 33.82  
Sea Level Pressure  
Sea Level Pressure 29.98 in    
Wind  
Wind Speed 5 mph (East)    
Max Wind Speed 17 mph    
Max Gust Speed 22 mph    
Visibility 9 miles    
Events Rain , Thunderstorm    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 01, 2011 Rise Set
Actual Time 6:09 AM AST 6:38 PM AST
Civil Twilight 5:47 AM AST 7:00 PM AST
Nautical Twilight 5:21 AM AST 7:26 PM AST
Astronomical Twilight 4:55 AM AST 7:52 PM AST
Moon 9:35 AM AST (9/1) 9:19 PM AST (9/1)
Length of Visible Light 13h 13m
Length of Day
12h 29m
Waxing Crescent, 17% of the Moon is Illuminated
Sep 1
Waxing Crescent
Sep 4
First Quarter
Sep 12
Full
Sep 20
Last Quarter
Sep 27
New

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 80.1 °F 84.2 °F 73.0 °F 79% 30.00 in 10.0 mi SSE 3.5 mph - N/A   Clear
1:56 AM 80.1 °F 83.8 °F 72.0 °F 76% 30.00 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:56 AM 80.1 °F 84.2 °F 73.0 °F 79% 29.98 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:56 AM 79.0 °F - 73.0 °F 82% 29.97 in 10.0 mi Calm Calm - N/A   Scattered Clouds
4:56 AM 79.0 °F - 72.0 °F 79% 29.97 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:56 AM 78.1 °F - 73.0 °F 84% 29.98 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:56 AM 79.0 °F - 73.0 °F 82% 29.99 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:56 AM 82.0 °F 87.9 °F 73.9 °F 76% 30.00 in 10.0 mi Calm Calm - 0.00 in   Scattered Clouds
8:56 AM 84.0 °F 91.9 °F 75.0 °F 74% 30.02 in 10.0 mi East 4.6 mph - N/A   Scattered Clouds
9:56 AM 84.9 °F 93.3 °F 75.0 °F 72% 30.03 in 10.0 mi ENE 8.1 mph - N/A   Scattered Clouds
10:56 AM 87.1 °F 95.4 °F 73.9 °F 65% 30.01 in 10.0 mi ENE 15.0 mph - N/A   Scattered Clouds
11:56 AM 82.0 °F 87.4 °F 73.0 °F 74% 30.01 in 10.0 mi SSW 4.6 mph - N/A   Scattered Clouds
12:10 PM 82.4 °F 88.2 °F 73.4 °F 74% 30.01 in 10.0 mi Variable 5.8 mph - 0.00 in Rain , Thunderstorm Light Thunderstorms and Rain
12:54 PM 78.8 °F - 75.2 °F 89% 30.02 in 1.0 mi SE 15.0 mph 21.9 mph 0.08 in Rain , Thunderstorm Heavy Thunderstorms and Rain
12:56 PM 77.0 °F - 73.9 °F 90% 30.01 in 1.0 mi SE 16.1 mph 21.9 mph 0.17 in Rain , Thunderstorm Heavy Thunderstorms and Rain
1:00 PM 75.2 °F - 73.4 °F 94% 30.01 in 1.0 mi SE 11.5 mph 21.9 mph 0.26 in Rain , Thunderstorm Heavy Thunderstorms and Rain
1:19 PM 75.2 °F - 73.4 °F 94% 29.99 in 6.0 mi NNE 3.5 mph - 0.92 in Rain Rain
1:56 PM 82.9 °F 90.8 °F 75.9 °F 79% 29.96 in 10.0 mi East 8.1 mph - 0.99 in   Scattered Clouds
2:56 PM 84.9 °F 90.7 °F 72.0 °F 65% 29.94 in 10.0 mi East 8.1 mph - N/A   Scattered Clouds
3:56 PM 86.0 °F 95.1 °F 75.0 °F 70% 29.94 in 10.0 mi ENE 16.1 mph - N/A   Scattered Clouds
4:56 PM 86.0 °F 91.5 °F 71.1 °F 61% 29.93 in 10.0 mi SE 6.9 mph - N/A   Scattered Clouds
5:56 PM 84.0 °F 91.2 °F 73.9 °F 72% 29.94 in 10.0 mi East 11.5 mph - N/A   Scattered Clouds
6:56 PM 82.0 °F 87.4 °F 73.0 °F 74% 29.94 in 10.0 mi East 6.9 mph - N/A   Scattered Clouds
7:56 PM 82.0 °F 87.4 °F 73.0 °F 74% 29.96 in 10.0 mi ESE 3.5 mph - N/A   Scattered Clouds
8:56 PM 80.1 °F 83.8 °F 72.0 °F 76% 29.97 in 10.0 mi East 5.8 mph - N/A   Scattered Clouds
9:56 PM 81.0 °F 85.8 °F 73.0 °F 77% 29.99 in 10.0 mi Calm Calm - N/A   Scattered Clouds
10:56 PM 80.1 °F 84.2 °F 73.0 °F 79% 29.98 in 10.0 mi East 3.5 mph - N/A   Scattered Clouds
11:56 PM 79.0 °F - 73.0 °F 82% 29.97 in 10.0 mi Calm Calm - N/A   Partly Cloudy