


Climatological Report (Daily)
Issued by NWS
Issued by NWS
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685 CDUS46 KMTR 280831 CLILVK CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 131 AM PDT THU AUG 28 2025 ................................... ...THE LIVERMORE AIRPORT CLIMATE SUMMARY FOR AUGUST 27 2025... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1930 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 86 2:31 PM 109 1944 87 -1 99 MINIMUM 59 6:12 AM 44 1955 56 3 58 AVERAGE 73 72 1 79 PRECIPITATION (IN) YESTERDAY 0.00 0.00 2006 0.00 0.00 0.00 MONTH TO DATE 0.00 0.07 -0.07 T SINCE OCT 1 8.68 15.08 -6.40 14.23 SINCE JAN 1 4.49 9.85 -5.36 11.04 DEGREE DAYS HEATING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE JUN 1 13 37 -24 4 SINCE JUL 1 0 4 -4 2 COOLING YESTERDAY 8 7 1 14 MONTH TO DATE 230 189 41 226 SINCE JUN 1 484 540 -56 845 SINCE JAN 1 541 592 -51 889 ................................................................... WIND (MPH) RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION W (290) HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (290) HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION W (290) AVERAGE WIND SPEED 8.8 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.1 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 90 5:00 AM LOWEST 36 2:00 PM AVERAGE 63 .......................................................... THE LIVERMORE AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 87 107 2017 MINIMUM TEMPERATURE (F) 56 44 1980 SUNRISE AND SUNSET AUGUST 28 2025........SUNRISE 6:34 AM PDT SUNSET 7:42 PM PDT AUGUST 29 2025........SUNRISE 6:35 AM PDT SUNSET 7:40 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$