Climatological Report (Monthly)
Issued by NWS Portland, OR

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683
CXUS56 KPQR 011540
CLMSPB

CLIMATE REPORT
NATIONAL WEATHER SERVICE PORTLAND OREGON
840 AM PDT WED OCT 01 2025

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

...THE SCAPPOOSE OR CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 9999 TO 9999

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
HIGHEST           91                                  89  09/24
LOWEST            43                                  46  09/26
AVG. MAXIMUM    78.4               76.3     2.1     74.8
AVG. MINIMUM    53.4               49.8     3.6     54.7
MEAN            65.9               63.0     2.9     64.8
DAYS MAX >= 90     2                2.2    -0.2        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.25   2021
 MINIMUM        0.24   2022
TOTALS          0.83               1.56   -0.73     0.57
DAYS >= .01        6                8.3    -2.3        5
DAYS >= .10        4                4.0     0.0        2
DAYS >= .50        0                0.7    -0.7        0
DAYS >= 1.00       0                0.2    -0.2        0
GREATEST
 24 HR. TOTAL   0.34   09/29 TO 09/30


DEGREE DAYS
HEATING TOTAL     42                103     -61       16
 SINCE 7/1        52                160    -108       MM
COOLING TOTAL     75                 45      30       17
 SINCE 1/1       515                332     183       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              4.6
RESULTANT WIND SPEED/DIRECTION   2/360
HIGHEST WIND SPEED/DIRECTION    22/210    DATE  09/30
HIGHEST GUST SPEED/DIRECTION    38/210    DATE  09/30

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.27

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       3
LIGHT RAIN                8     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                      2

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

$$