Climatological Report (Monthly)
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000
CXUS56 KSGX 011835
CLMSNA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN DIEGO, CA
1035 AM PST MON JAN 1 2018

...................................

...THE JOHN WAYNE AIRPORT CA CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1999 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              90   12/12/2010
 LOW               36   12/31/2010
                        12/28/2003
                        12/27/2003
HIGHEST            88   12/10        67      21       80  12/29
LOWEST             41   12/22        47      -6       38  12/25
                                                          12/18
AVG. MAXIMUM     73.5              65.9     7.6     65.5
AVG. MINIMUM     48.8              46.2     2.6     49.3
MEAN             61.2              56.1     5.1     57.4
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MAX >= 100     0                                  0
DAYS MIN <= 32      0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         9.17   2010
 MINIMUM         0.05   2000
TOTALS           0.01R             2.08   -2.07     3.58
DAILY AVG.       0.00              0.07   -0.07     0.12
DAYS >= .01         1                MM      MM        6
DAYS >= .10         0                MM      MM        6
DAYS >= .50         0                MM      MM        4
DAYS >= 1.00        0                MM      MM        0
DAYS >= 1.50        0                                  0
DAYS >= 2.00        0                                  0
GREATEST
 24 HR. TOTAL    0.01   12/20 TO 12/20           12/21 TO 12/22
                                                          12/30 TO 12/30
                                                          12/30 TO 12/30
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/22(00) TO 12/22(00)
                                                 12/30(00) TO 12/30(00)0
                                                 12/30(00) TO 12/30(00)0

DEGREE_DAYS
HEATING TOTAL     130               279    -149      228
 SINCE 7/1        163               432    -269      306
COOLING TOTAL      18                 1      17        0
 SINCE 1/1       1303               877     426     1226

FREEZE DATES
RECORD
 EARLIEST     MM
 LATEST       MM
EARLIEST                        MM
LATEST                          MM
.................................................

WIND (MPH)
AVERAGE WIND SPEED              4.3
RESULTANT WIND SPEED/DIRECTION   2/060
HIGHEST WIND SPEED/DIRECTION    31/060    DATE  12/04
HIGHEST GUST SPEED/DIRECTION    43/060    DATE  12/04

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           18
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     49

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                1     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      2
HAZE                     10

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$


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