San Juan, PR

10:53 PM AST on August 19, 2017 (GMT -0400)
Luis Munoz Marin International

Weather History for TJSJ - December, 2011

Change the Weather History Date:

Saturday, December 31, 2011

  Actual Average Record
Temperature  
Mean Temperature 79 °F 78 °F  
Max Temperature 84 °F 83 °F 87 °F (1995)
Min Temperature 73 °F 73 °F 65 °F (1917)
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 14 13  
Month to date cooling degree days 422 423  
Year to date cooling degree days 5638 5847  
Growing Degree Days 28 (Base 50)    
Moisture  
Dew Point 72 °F    
Average Humidity 78    
Maximum Humidity 100    
Minimum Humidity 55    
Precipitation  
Precipitation 0.32 in 0.15 in 2.50 in (1936)
Month to date precipitation 8.19 5.02  
Year to date precipitation 88.15 56.35  
Snow  
Snow 0.00 in 0.00 in - ()
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 0.0 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.09 in    
Wind  
Wind Speed 10 mph (East)    
Max Wind Speed 22 mph    
Max Gust Speed 29 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 or City:

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

Dec. 31, 2011 Rise Set
Actual Time 6:55 AM AST 5:58 PM AST
Civil Twilight 6:31 AM AST 6:21 PM AST
Nautical Twilight 6:04 AM AST 6:49 PM AST
Astronomical Twilight 5:37 AM AST 7:16 PM AST
Moon 11:41 AM AST (12/31) No Moon Set
Length of Visible Light 11h 49m
Length of Day
11h 02m
Waxing Crescent, 44% of the Moon is Illuminated
Dec 31
Waxing Crescent
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter
Jan 23
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 75.0 °F - 71.1 °F 87% 30.09 in 8.0 mi ESE 6.9 mph - 0.04 in Rain Rain
1:56 AM 75.9 °F - 72.0 °F 87% 30.07 in 10.0 mi Calm Calm - 0.00 in   Overcast
2:56 AM 75.9 °F - 71.1 °F 85% 30.06 in 10.0 mi ESE 4.6 mph - N/A   Mostly Cloudy
3:56 AM 75.0 °F - 71.1 °F 87% 30.05 in 10.0 mi Calm Calm - N/A   Overcast
4:56 AM 73.0 °F - 71.1 °F 93% 30.07 in 4.0 mi East 10.4 mph 23.0 mph 0.17 in Rain Rain
5:56 AM 73.9 °F - 73.9 °F 100% 30.07 in 10.0 mi East 5.8 mph - 0.04 in   Overcast
6:56 AM 73.9 °F - 73.9 °F 100% 30.09 in 9.0 mi SE 3.5 mph - N/A   Overcast
7:56 AM 73.9 °F - 72.3 °F 95% 30.12 in 9.0 mi ESE 6.9 mph - 0.06 in   Scattered Clouds
8:56 AM 78.1 °F - 74.8 °F 90% 30.14 in 9.0 mi East 8.1 mph - N/A   Mostly Cloudy
9:56 AM 80.1 °F 85.4 °F 75.9 °F 87% 30.14 in 9.0 mi East 12.7 mph - 0.01 in   Mostly Cloudy
10:56 AM 81.0 °F 85.2 °F 72.0 °F 74% 30.13 in 9.0 mi East 9.2 mph - 0.00 in   Mostly Cloudy
11:56 AM 82.9 °F 87.0 °F 70.0 °F 65% 30.11 in 10.0 mi East 15.0 mph - N/A   Scattered Clouds
12:56 PM 84.0 °F 86.3 °F 66.0 °F 55% 30.07 in 10.0 mi ENE 18.4 mph - N/A   Scattered Clouds
1:56 PM 82.9 °F 87.0 °F 70.0 °F 65% 30.05 in 10.0 mi ENE 17.3 mph - N/A   Scattered Clouds
2:56 PM 82.9 °F 87.0 °F 70.0 °F 65% 30.05 in 10.0 mi ENE 19.6 mph - N/A   Scattered Clouds
3:56 PM 82.0 °F 85.9 °F 70.0 °F 67% 30.05 in 10.0 mi East 15.0 mph - N/A   Scattered Clouds
4:56 PM 80.1 °F 83.2 °F 70.0 °F 71% 30.06 in 10.0 mi East 12.7 mph - N/A   Scattered Clouds
5:56 PM 79.0 °F - 72.0 °F 79% 30.07 in 10.0 mi ENE 11.5 mph - N/A   Scattered Clouds
6:56 PM 78.1 °F - 71.1 °F 79% 30.09 in 10.0 mi East 12.7 mph - N/A   Mostly Cloudy
7:56 PM 78.1 °F - 72.0 °F 81% 30.10 in 10.0 mi ENE 15.0 mph - N/A   Mostly Cloudy
8:56 PM 78.1 °F - 72.0 °F 81% 30.11 in 10.0 mi ENE 10.4 mph - N/A   Mostly Cloudy
9:49 PM 78.8 °F - 71.6 °F 78% 30.12 in 10.0 mi East 11.5 mph 19.6 mph N/A   Mostly Cloudy
9:56 PM 78.1 °F - 71.1 °F 79% 30.12 in 10.0 mi East 12.7 mph - N/A   Mostly Cloudy
10:56 PM 78.1 °F - 71.1 °F 79% 30.12 in 10.0 mi East 11.5 mph - N/A   Scattered Clouds
11:56 PM 75.9 °F - 72.0 °F 87% 30.12 in 10.0 mi East 6.9 mph - 0.00 in   Scattered Clouds