566
CXUS56 KPQR 011455
CLMHIO

CLIMATE REPORT
NATIONAL WEATHER SERVICE PORTLAND OREGON
755 AM PDT MON JUN 01 2026

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

...THE HILLSBORO OR CLIMATE SUMMARY FOR THE MONTH OF MAY 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1929 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
HIGHEST           90                                  85  05/30
LOWEST            36                                  35  05/08
                                                          05/04
AVG. MAXIMUM    71.5               68.7     2.8     69.4
AVG. MINIMUM    46.9               44.7     2.2     44.5
MEAN            59.2               56.7     2.5     56.9
DAYS MAX >= 90     1                0.4     0.6       MM
DAYS MAX <= 32     0                0.0     0.0       MM
DAYS MIN <= 32     0                0.5    -0.5       MM
DAYS MIN <= 0      0                0.0     0.0       MM

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        4.77   1998
 MINIMUM        0.11   2018
TOTALS          0.71               2.02   -1.31     0.76
DAYS >= .01        7               12.0    -5.0       MM
DAYS >= .10        3                6.1    -3.1       MM
DAYS >= .50        0                0.6    -0.6       MM
DAYS >= 1.00       0                0.0     0.0       MM
GREATEST
 24 HR. TOTAL   0.24   05/13 TO 05/13


DEGREE DAYS
HEATING TOTAL    172                266     -94      244
 SINCE 7/1      3912               4686    -774       MM
COOLING TOTAL      7                  9      -2        2
 SINCE 1/1         7                 10      -3       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.7
RESULTANT WIND SPEED/DIRECTION   3/310
HIGHEST WIND SPEED/DIRECTION    25/300    DATE  05/16
HIGHEST GUST SPEED/DIRECTION    32/310    DATE  05/16

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.33

AVERAGE RH (PERCENT)     67

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      1
HAZE                      2

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

$$