Weather History for San Juan, PR

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Tuesday, July 31, 2012

  Actual Average Record
Temperature  
Mean Temperature 80 °F 84 °F  
Max Temperature 84 °F 89 °F 94 °F (1980)
Min Temperature 76 °F 78 °F 71 °F (1927)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 June heating degree days 0 0  
Since 1 July heating degree days 0 0  
Cooling Degree Days 15 18  
Month to date cooling degree days 590 570  
Year to date cooling degree days 3397 3284  
Since 1 June cooling degree days 1216 1119  
Growing Degree Days 30 (Base 50)    
Moisture  
Dew Point 75 °F    
Average Humidity 85    
Maximum Humidity 91    
Minimum Humidity 79    
Precipitation  
Precipitation 1.56 in 0.16 in 1.87 in (1937)
Month to date precipitation 6.82 5.07  
Year to date precipitation 32.53 28.16  
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 5 mph (ESE)    
Max Wind Speed 16 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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Daily Weather History Graph

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Astronomy

Jul. 31, 2012 Rise Set
Actual Time 6:01 AM AST 6:58 PM AST
Civil Twilight 5:38 AM AST 7:22 PM AST
Nautical Twilight 5:10 AM AST 7:49 PM AST
Astronomical Twilight 4:42 AM AST 8:17 PM AST
Moon 5:45 PM AST (7/31) 4:22 AM AST (7/31)
Length of Visible Light 13h 43m
Length of Day
12h 57m
Waxing Gibbous, 97% of the Moon is Illuminated
Jul 31
Waxing Gibbous
Aug 1
Full
Aug 9
Last Quarter
Aug 17
New
Aug 24
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 80.1 °F 85.4 °F 75.9 °F 87% 29.96 in 10.0 mi East 4.6 mph - 0.06 in   Mostly Cloudy
1:56 AM 80.1 °F 85.4 °F 75.9 °F 87% 29.96 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:56 AM 80.1 °F 85.4 °F 75.9 °F 87% 29.96 in 10.0 mi ESE 4.6 mph - N/A   Mostly Cloudy
3:56 AM 79.0 °F - 75.0 °F 88% 29.96 in 10.0 mi SE 3.5 mph - 0.08 in Thunderstorm Thunderstorm
4:19 AM 78.8 °F - 75.2 °F 89% 29.97 in 2.0 mi East 13.8 mph 17.3 mph 0.03 in Rain , Thunderstorm Heavy Thunderstorms and Rain
4:35 AM 77.0 °F - 73.4 °F 89% 29.96 in 6.0 mi NE 6.9 mph - 0.40 in Rain , Thunderstorm Thunderstorms and Rain
4:56 AM 79.0 °F - 75.0 °F 88% 29.96 in 10.0 mi East 3.5 mph - 0.44 in Rain , Thunderstorm Light Thunderstorms and Rain
5:25 AM 78.8 °F - 75.2 °F 89% 29.96 in 10.0 mi ESE 5.8 mph - 0.01 in Rain Light Rain
5:56 AM 80.1 °F 85.4 °F 75.9 °F 87% 29.96 in 8.0 mi East 9.2 mph - 0.03 in Rain Rain
6:56 AM 80.1 °F 85.8 °F 77.0 °F 90% 29.97 in 10.0 mi East 6.9 mph - 0.02 in Rain Light Rain
7:56 AM 82.0 °F 90.2 °F 77.0 °F 85% 30.00 in 10.0 mi East 11.5 mph - 0.01 in   Mostly Cloudy
8:56 AM 82.9 °F 90.2 °F 75.0 °F 77% 30.01 in 10.0 mi ESE 9.2 mph 21.9 mph N/A   Mostly Cloudy
9:41 AM 78.8 °F - 71.6 °F 78% 30.04 in 2.0 mi ESE 9.2 mph - 0.03 in Rain , Thunderstorm Heavy Thunderstorms and Rain
9:56 AM 75.9 °F - 71.1 °F 85% 30.04 in 2.0 mi ESE 5.8 mph - 0.35 in Rain , Thunderstorm Heavy Thunderstorms and Rain
10:14 AM 75.2 °F - 71.6 °F 89% 30.03 in 9.0 mi South 3.5 mph - 0.10 in Rain , Thunderstorm Light Thunderstorms and Rain
10:28 AM 75.2 °F - 71.6 °F 89% 30.04 in 10.0 mi Calm Calm - 0.11 in Rain Light Rain
10:56 AM 77.0 °F - 72.0 °F 84% 30.04 in 10.0 mi Calm Calm - 0.11 in   Mostly Cloudy
11:56 AM 81.0 °F 86.7 °F 75.0 °F 82% 30.05 in 10.0 mi ESE 8.1 mph - N/A   Mostly Cloudy
12:56 PM 79.0 °F - 75.0 °F 88% 30.03 in 2.0 mi SE 3.5 mph - 0.15 in Rain Light Rain
1:12 PM 78.8 °F - 75.2 °F 89% 30.02 in 9.0 mi Variable 5.8 mph - 0.20 in Rain Rain
1:36 PM 80.6 °F 86.2 °F 75.2 °F 84% 30.01 in 9.0 mi SE 3.5 mph - 0.29 in Rain Light Rain
1:56 PM 80.1 °F 85.4 °F 75.9 °F 87% 30.01 in 10.0 mi ESE 9.2 mph - 0.29 in   Mostly Cloudy
2:56 PM 81.0 °F 87.3 °F 75.9 °F 85% 29.99 in 10.0 mi SSW 3.5 mph - 0.02 in Rain Light Rain
3:56 PM 81.0 °F 86.7 °F 75.0 °F 82% 29.99 in 10.0 mi Calm Calm - 0.01 in   Mostly Cloudy
4:56 PM 82.0 °F 88.6 °F 75.0 °F 79% 29.99 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
5:56 PM 82.0 °F 88.6 °F 75.0 °F 79% 30.00 in 10.0 mi East 5.8 mph - N/A   Mostly Cloudy
6:56 PM 81.0 °F 86.7 °F 75.0 °F 82% 30.00 in 10.0 mi East 6.9 mph - N/A   Mostly Cloudy
7:56 PM 81.0 °F 86.2 °F 73.9 °F 79% 30.00 in 10.0 mi ESE 4.6 mph - N/A   Partly Cloudy
8:56 PM 80.1 °F 84.2 °F 73.0 °F 79% 30.02 in 10.0 mi East 5.8 mph - N/A   Scattered Clouds
9:56 PM 80.1 °F 84.2 °F 73.0 °F 79% 30.03 in 10.0 mi East 6.9 mph - N/A   Scattered Clouds
10:56 PM 81.0 °F 86.2 °F 73.9 °F 79% 30.04 in 10.0 mi Calm Calm - N/A   Scattered Clouds
11:56 PM 80.1 °F 85.1 °F 75.0 °F 85% 30.04 in 10.0 mi ESE 3.5 mph - 0.00 in   Scattered Clouds