Climatological Report (Monthly)
Issued by NWS
Issued by NWS
757
CXUS56 KMTR 010839
CLMSJC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1239 AM PST WED JAN 01 2025
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...THE SAN JOSE AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2024...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1893 TO 2024
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 79 12/12/1958
LOW 19 12/23/1990
12/22/1990
HIGHEST 74 12/23 72 12/28
LOWEST 38 12/11 37 12/10
AVG. MAXIMUM 65.5 59.5 6.0 64.8
AVG. MINIMUM 46.6 41.7 4.9 46.4
MEAN 56.0 55.6
DAYS MAX >= 90 0 0
DAYS MAX <= 32 0 0
DAYS MIN <= 32 0 0
DAYS MIN <= 0 0 0
PRECIPITATION (INCHES)
TOTALS 2.32 2.29 0.03 2.76
DAILY AVG. 0.07 0.07 -0.00 0.09
DAYS >= .01 8 10
DAYS >= .10 4 6
DAYS >= .50 1 2
DAYS >= 1.00 0 0
GREATEST
24 HR. TOTAL 0.90 12/14 TO 12/14 0.96 12/29 TO 12/30
DEGREE DAYS
HEATING TOTAL 273 446 -173 284
SINCE 7/1 499 814 -315 MM
COOLING TOTAL 2 0 2 0
SINCE 1/1 1217 624 593 MM
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WIND (MPH)
AVERAGE WIND SPEED 4.7
RESULTANT WIND SPEED/DIRECTION 1/170
HIGHEST WIND SPEED/DIRECTION 29/260 DATE 12/14
HIGHEST GUST SPEED/DIRECTION 39/270 DATE 12/14
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.49
NUMBER OF DAYS FAIR 12
NUMBER OF DAYS PC 12
NUMBER OF DAYS CLOUDY 7
AVERAGE RH (PERCENT) 64
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 4
LIGHT RAIN 8 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 14 FOG W/VIS <= 1/4 MILE 4
HAZE 23
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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