Climatological Report (Monthly)
Issued by NWS Portland, OR

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CXUS56 KPQR 011546
CLMHIO

CLIMATE REPORT
NATIONAL WEATHER SERVICE PORTLAND OREGON
746 AM PST MON JAN 01 2024

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

...THE HILLSBORO OR CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2023...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1929 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
HIGHEST           63                                  57  12/26
LOWEST            26                                  19  12/17
AVG. MAXIMUM    50.2               46.2     4.0     44.4
AVG. MINIMUM    37.6               33.3     4.3     31.8
MEAN            43.9               39.8     4.1     38.1
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                1.0    -1.0        2
DAYS MIN <= 32     8               13.7    -5.7       14
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       14.60   2015
 MINIMUM        1.08   2013
TOTALS          7.68               6.05    1.63     7.45
DAYS >= .01       20               19.9     0.1       19
DAYS >= .10       13               12.8     0.2       10
DAYS >= .50        8                3.9     4.1        6
DAYS >= 1.00       1                0.9     0.1        1
GREATEST
 24 HR. TOTAL   1.63   12/05 TO 12/06


DEGREE DAYS
HEATING TOTAL    626                783    -157      826
 SINCE 7/1      1682               1992    -310       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1       516                275     241       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              4.1
RESULTANT WIND SPEED/DIRECTION   1/160
HIGHEST WIND SPEED/DIRECTION    22/170    DATE  12/02
HIGHEST GUST SPEED/DIRECTION    30/190    DATE  12/02

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.75

AVERAGE RH (PERCENT)     88

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                      10
LIGHT RAIN               21     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      29     FOG W/VIS <= 1/4 MILE     16
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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