Climate Report January 2013

January 2013 Climate Report for Puerto Rico and the U.S. Virgin Islands

January 2013 Highlights

New Records for January 2013

Date	New Record	Previous Record
January 2013	January 2013 ended as the driest January on record at Saint Thomas with only 0.48".	This broke the previous record of 0.76" set back in anuary 2007.

Saint Croix

Date	New Record	Previous Record
January 06th	A record high temperature of 87°F	This tied the previous record of 87°F set back in 1995 and 1996.
January 14th	A record low temperature of 64°F	This broke the previous record of 66°F set back in 1975.
January 16th	A record low temperature of 63°F	This broke the previous record of 65°F set back in 1981.

January 2013 Statistics

Average January Temperatures/Precipitation (NCDC 1981-2010 averages):

	San Juan	Saint Thomas	Saint Croix
High	83.2°F	85.1°F	84.0°F
Low	72.0°F	72.5°F	72.4°F
Avg. T	77.6°F	78.8°F	78.2°F
Pcpn.	3.76’’	2.38’’	2.14’’

January 2013 Observations:

	San Juan	Saint Thomas	Saint Croix
High	83.5°F(+0.3°F)	83.5°F(-1.6°F)	84.0°F(0.0°F)
Low	73.2°F(+1.2°F)	73.4°F(+0.9°F)	71.1°F(-1.3°F)
Avg. T	78.3°F(+0.7°F)	78.5°F(-0.3°F)	77.5°F(-0.7°F)
Pcpn.	1.78" (-1.98")	0.48" (-1.90")	1.05" (-1.09")

January 2013 extremes:

	San Juan	Saint Thomas	Saint Croix
High	86°F January 23rd and 22nd	86°F January 07th and 6th	87°F January 06th
Low	70°F January 14th	70°F January 17th	63°F January 16th

Rainfall Accumulations Year to Date (YTD)

Figure A – Graphical Display of precipitation for January 2013 across Puerto Rico and the U.S. Virgin Islands derived from a combination of rain gage and radar data.

Figure B – Graphical display of departure from normal precipitation YTD.

January Historical Statistics

Highest January Temperatures on record:

San Juan	Saint Thomas	Saint Croix
92°F January 16th 1983	93°F January 5th 1996	92°F January 30th 1973
92°F January 11th 1982	93°F January 3rd 1996	91°F January 14th 1973
91°F January 21st 1995	92°F January 13th 1996	90°F January 26th 1973

Lowest January Temperatures on record:

San Juan	Saint Thomas	Saint Croix
61°F January 31st, 1962	63°F January 29th, 1996	61°F January 21st, 2000
62 °F January 25th, 1968	63°F January 8th, 1956	61°F January 20th, 2000
62°F January 28th, 1965	64°F January 20th, 2000	61°F January 27th, 1979

Wettest January:

San Juan	Saint Thomas	Saint Croix
15.47" 1937	4.83" 2006	7.35" 1963
12.45" 1902	4.67" 1995	5.26" 2005
11.07" 2010	4.19" 1956	4.77" 1952

Driest January:

San Juan	Saint Thomas	Saint Croix
0.61" 1978	0.48" 2013	0.49" 2011
0.69" 1983	0.76" 2007	0.54" 1977
0.94" 1960	0.82" 1991	0.60" 2009

Decadal January Observations for San Juan, Puerto Rico

	2010-2013	2000’s	1990’s	1980’s	1970’s	1960’s
High	83.2°F	82.5°F	83.6°F	84.1°F	83.0°F	82.7°F
Low	72.2°F	71.2°F	71.3°F	70.7°F	72.0°F	69.3°F
Avg. T	77.7°F	76.8°F	77.4°F	77.4°F	77.5°F	76.0°F
Pcpn.	4.82"	3.90’’	4.09’’	2.34’’	2.68’’	3.05’’

Looking ahead toward the month of February

Average February Temperatures/Precipitation (NCDC 1981-2010 averages):

	San Juan	Saint Thomas	Saint Croix
High	83.7°F	85.1°F	84.0°F
Low	72.0°F	72.5°F	72.3°F
Avg. T	77.9°F	78.8°F	78.2°F
Pcpn.	2.39’’	1.43’’	1.65’’

Precipitation outlook for January-February-March (click here for details)

El Niño/Southern Oscillation (ENSO) Diagnostic Discussion

ENSO-neutral is favored through northern hemisphere spring 2013. (click here for details)

Moon/Sun/Tide Data for the month of February 2013

Sunrise/sunset data, phase of the moon, as well as tide data can all be found by going to the climate portion of the National Weather Service San Juan Climate homepage and then clicking on the astronomical tab.

National Weather Service Weather Forecast Office