Climatological Report (Monthly)
Issued by NWS Portland, OR
Issued by NWS Portland, OR
850
CXUS56 KPQR 011540
CLMPDX
CLIMATE REPORT
NATIONAL WEATHER SERVICE PORTLAND OREGON
840 AM PDT WED OCT 01 2025
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...THE PORTLAND OR CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1940 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
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TEMPERATURE (F)
HIGHEST 90 102 09/05
LOWEST 48 44 09/30
AVG. MAXIMUM 78.2 76.7 1.5 78.3
AVG. MINIMUM 57.1 54.1 3.0 57.0
MEAN 67.7 65.4 2.3 67.7
DAYS MAX >= 90 1 2.1 -1.1 4
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 5.62 2013
MINIMUM T 1993
TOTALS 1.06 1.52 -0.46 0.74
DAYS >= .01 6 6.7 -0.7 8
DAYS >= .10 2 3.5 -1.5 2
DAYS >= .50 1 0.8 0.2 0
DAYS >= 1.00 0 0.3 -0.3 0
GREATEST
24 HR. TOTAL 0.63 09/14 TO 09/14
SNOWFALL (INCHES)
TOTALS 0.0
SINCE 7/1 0.0
DEGREE DAYS
HEATING TOTAL 17 61 -44 32
SINCE 7/1 19 78 -59 MM
COOLING TOTAL 102 73 29 119
SINCE 1/1 694 504 190 MM
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WIND (MPH)
AVERAGE WIND SPEED 5.2
RESULTANT WIND SPEED/DIRECTION 2/310
HIGHEST WIND SPEED/DIRECTION 24/090 DATE 09/16
24/250 09/30
HIGHEST GUST SPEED/DIRECTION 32/110 DATE 09/16
32/170 09/30
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.49
NUMBER OF DAYS FAIR 11
NUMBER OF DAYS PC 13
NUMBER OF DAYS CLOUDY 6
AVERAGE RH (PERCENT) 65
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 2
LIGHT RAIN 10 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 0
HAZE 4
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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