


Climatological Report (Monthly)
Issued by NWS
Issued by NWS
588 CXUS56 KPDT 011906 CLMHRI CLIMATE REPORT NATIONAL WEATHER SERVICE PENDLETON,OR 1206 PM PDT WED OCT 01 2025 ................................... ...THE HERMISTON OR CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1906 TO 2025 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 102 09/04/1934 LOW 21 09/25/1926 09/29/2019 09/03/2016 HIGHEST 99 09/02 98 09/01 09/03 09/02 LOWEST 42 09/26 36 09/30 09/27 AVG. MAXIMUM 85.7 81.2 4.5 84.2 AVG. MINIMUM 54.0 47.9 6.1 52.8 MEAN 69.8 64.6 5.2 68.5 DAYS MAX >= 90 8 3.9 4.1 10 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 0.4 -0.4 0 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 2.19 1927 MINIMUM 0.00 1990 TOTALS 0.56 0.33 0.23 0.41 DAILY AVG. 0.02 0.01 0.01 0.01 DAYS >= .01 4 2.8 1.2 1 DAYS >= .10 2 1.0 1.0 1 DAYS >= .50 0 0.1 -0.1 0 DAYS >= 1.00 0 0.0 0.0 0 GREATEST 24 HR. TOTAL 0.36 09/11 TO 09/11 0.41 09/11 TO 09/11 DEGREE DAYS HEATING TOTAL 18 81 -63 34 SINCE 7/1 18 91 -73 COOLING TOTAL 150 68 82 145 SINCE 1/1 1097 839 258 ................................................................ WIND (MPH) AVERAGE WIND SPEED 5.8 RESULTANT WIND SPEED/DIRECTION 3/210 HIGHEST WIND SPEED/DIRECTION 29/260 DATE 09/25 HIGHEST GUST SPEED/DIRECTION 40/260 DATE 09/25 AVERAGE RH (PERCENT) 53 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 4 MIXED PRECIP 0 HEAVY RAIN 1 RAIN 0 LIGHT RAIN 8 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 1 FOG W/VIS <= 1/4 MILE 0 HAZE 5 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$