Climatological Report (Monthly)
Issued by NWS Portland, OR

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CXUS56 KPQR 020119
CLMPDX


CLIMATE REPORT
NATIONAL WEATHER SERVICE PORTLAND OREGON
519 PM PST MON JAN 1 2018

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

...THE PORTLAND OR CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1940 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
HIGHEST            56                                 52  12/20
                                                          12/03
LOWEST             23                                 25  12/16
                                                          12/15
AVG. MAXIMUM     45.5              45.6    -0.1     42.3
AVG. MINIMUM     34.2              35.2    -1.0     32.2
MEAN             39.8              40.4    -0.6     37.2
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.9    -0.9        0
DAYS MIN <= 32     14               8.7     5.3       19
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        15.24   2015
 MINIMUM         1.38   1976
TOTALS           3.09              5.49   -2.40     4.61
DAYS >= .01        15              18.6    -3.6       21
DAYS >= .10         8              12.3    -4.3       12
DAYS >= .50         3               3.4    -0.4        3
DAYS >= 1.00        0               0.9    -0.9        0
GREATEST
 24 HR. TOTAL    0.66   12/28 TO 12/28

SNOWFALL (INCHES)
TOTALS            1.0
SINCE 7/1         1.0

DEGREE_DAYS
HEATING TOTAL     776               763      13      854
 SINCE 7/1       1701              1732     -31     1564
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        700               424     276      548
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.4
RESULTANT WIND SPEED/DIRECTION   6/125
HIGHEST WIND SPEED/DIRECTION    35/090    DATE  12/06
HIGHEST GUST SPEED/DIRECTION    41/090    DATE  12/06

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            7
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY         17

AVERAGE RH (PERCENT)     80

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          4     HAIL                       1
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                1     SLEET                      0
FOG                      19     FOG W/VIS <= 1/4 MILE      4
HAZE                      1

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

$$


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