Weather History for San Juan, PR

Change the Weather History Date:

Wednesday, August 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 82 °F 84 °F  
Max Temperature 89 °F 89 °F 97 °F (1980)
Min Temperature 74 °F 78 °F 72 °F (1956)
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 17 19  
Month to date cooling degree days 397 399  
Year to date cooling degree days 3720 3683  
Since 1 June cooling degree days 1472 1518  
Growing Degree Days 31 (Base 50)    
Moisture  
Dew Point 74 °F    
Average Humidity 76    
Maximum Humidity 88    
Minimum Humidity 63    
Precipitation  
Precipitation 0.17 in 0.18 in 2.72 in (1983)
Month to date precipitation 5.25 3.45  
Year to date precipitation 55.25 31.61  
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 8 mph (East)    
Max Wind Speed 20 mph    
Max Gust Speed 24 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

Aug. 21, 2013 Rise Set
Actual Time 6:07 AM AST 6:46 PM AST
Civil Twilight 5:44 AM AST 7:09 PM AST
Nautical Twilight 5:18 AM AST 7:35 PM AST
Astronomical Twilight 4:51 AM AST 8:01 PM AST
Moon 7:10 PM AST 6:30 AM AST
Length of Visible Light 13h 24m
Length of Day
12h 39m
Full, 100% of the Moon is Illuminated
Aug 21
Full
Aug 28
Last Quarter
Sep 5
New
Sep 12
First Quarter
Sep 19
Full

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 85.1 °F 75.0 °F 85% 30.02 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:56 AM 79.0 °F - 75.0 °F 88% 30.01 in 7.0 mi ENE 4.6 mph - 0.04 in Rain Light Rain
2:56 AM 75.0 °F - 70.0 °F 84% 29.99 in 10.0 mi ESE 3.5 mph - 0.12 in Rain Light Rain
3:56 AM 75.9 °F - 71.1 °F 85% 29.99 in 9.0 mi Calm Calm - 0.01 in   Mostly Cloudy
4:56 AM 77.0 °F - 73.0 °F 88% 29.99 in 10.0 mi Calm Calm - N/A   Scattered Clouds
5:56 AM 78.1 °F - 73.9 °F 87% 29.99 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:56 AM 78.1 °F - 73.9 °F 87% 30.00 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:56 AM 80.1 °F 85.1 °F 75.0 °F 85% 30.01 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:56 AM 82.0 °F 89.4 °F 75.9 °F 82% 30.03 in 10.0 mi East 8.1 mph - N/A   Mostly Cloudy
9:56 AM 84.0 °F 92.6 °F 75.9 °F 76% 30.03 in 10.0 mi East 10.4 mph - N/A   Mostly Cloudy
10:56 AM 86.0 °F 96.0 °F 75.9 °F 72% 30.03 in 10.0 mi East 13.8 mph - N/A   Mostly Cloudy
11:56 AM 86.0 °F 96.9 °F 77.0 °F 74% 30.02 in 10.0 mi East 15.0 mph - N/A   Mostly Cloudy
12:56 PM 88.0 °F 98.5 °F 75.9 °F 67% 30.01 in 10.0 mi ENE 16.1 mph - N/A   Mostly Cloudy
1:56 PM 87.1 °F 97.3 °F 75.9 °F 69% 29.99 in 10.0 mi East 16.1 mph - N/A   Mostly Cloudy
2:56 PM 88.0 °F 97.5 °F 75.0 °F 65% 29.97 in 10.0 mi ENE 16.1 mph 23.0 mph N/A   Scattered Clouds
3:56 PM 88.0 °F 95.6 °F 73.0 °F 61% 29.96 in 10.0 mi ENE 16.1 mph - N/A   Scattered Clouds
4:56 PM 86.0 °F 93.8 °F 73.9 °F 67% 29.97 in 10.0 mi ENE 17.3 mph - N/A   Scattered Clouds
5:56 PM 84.0 °F 91.2 °F 73.9 °F 72% 29.98 in 10.0 mi East 12.7 mph - N/A   Scattered Clouds
6:56 PM 82.0 °F 88.6 °F 75.0 °F 79% 29.99 in 10.0 mi East 9.2 mph - 0.00 in   Scattered Clouds
7:56 PM 82.0 °F 87.9 °F 73.9 °F 76% 30.00 in 10.0 mi East 10.4 mph - N/A   Scattered Clouds
8:56 PM 82.0 °F 87.9 °F 73.9 °F 76% 30.01 in 10.0 mi East 9.2 mph - N/A   Scattered Clouds
9:56 PM 82.0 °F 87.9 °F 73.9 °F 76% 30.03 in 10.0 mi East 6.9 mph - N/A   Scattered Clouds
10:56 PM 82.0 °F 87.9 °F 73.9 °F 76% 30.02 in 10.0 mi ESE 4.6 mph - N/A   Partly Cloudy
11:56 PM 82.0 °F 87.4 °F 73.0 °F 74% 30.02 in 10.0 mi ESE 4.6 mph - N/A   Partly Cloudy