


Climatological Report (Monthly)
Issued by NWS Portland, OR
Issued by NWS Portland, OR
716 CXUS56 KPQR 011540 CLMHIO CLIMATE REPORT NATIONAL WEATHER SERVICE PORTLAND OREGON 840 AM PDT WED OCT 01 2025 ................................... ...THE HILLSBORO OR CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1929 TO 2025 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) HIGHEST 91 100 09/05 LOWEST 42 40 09/29 09/30 AVG. MAXIMUM 78.7 76.4 2.3 77.3 AVG. MINIMUM 52.1 47.5 4.6 50.5 MEAN 65.4 62.0 3.4 63.9 DAYS MAX >= 90 3 2.3 0.7 4 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 0.1 -0.1 0 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 6.27 2013 MINIMUM 0.00 1975 TOTALS 1.36 1.38 -0.02 0.84 DAYS >= .01 6 7.6 -1.6 7 DAYS >= .10 5 3.3 1.7 2 DAYS >= .50 1 0.6 0.4 0 DAYS >= 1.00 0 0.1 -0.1 0 GREATEST 24 HR. TOTAL 0.59 09/29 TO 09/29 DEGREE DAYS HEATING TOTAL 48 124 -76 97 SINCE 7/1 60 196 -136 MM COOLING TOTAL 64 33 31 71 SINCE 1/1 483 274 209 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 4.1 RESULTANT WIND SPEED/DIRECTION 1/330 HIGHEST WIND SPEED/DIRECTION 26/200 DATE 09/30 HIGHEST GUST SPEED/DIRECTION 40/180 DATE 09/30 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.25 AVERAGE RH (PERCENT) 67 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 1 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 3 LIGHT RAIN 6 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 8 FOG W/VIS <= 1/4 MILE 1 HAZE 1 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$