Climatological Report (Monthly)
Issued by NWS
Issued by NWS
036
CXUS56 KMTR 010844
CLMHWD
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
144 AM PDT WED OCT 01 2025
...................................
...THE HAYWARD AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025
WEATHER OBSERVED NORMAL LAST YEAR`S
VALUE DATE(S) VALUE VALUE DATE(S)
.........................................................
TEMPERATURE (F)
RECORD
HIGH 108 MM
LOW 47 09/26/2013
HIGHEST 95 09/23 93 09/23
LOWEST 57 09/27 56 09/30
AVG. MAXIMUM 76.4 79.0
AVG. MINIMUM 61.1 59.1
MEAN 68.8 69.1
DAYS MAX >= 90 1 5
DAYS MAX <= 32 0 0
DAYS MIN <= 32 0 0
DAYS MIN <= 0 0 0
PRECIPITATION (INCHES)
TOTALS 0.12 0.08 T
DAILY AVG. 0.00 T
DAYS >= .01 4 0
DAYS >= .10 0 0
DAYS >= .50 0 0
DEGREE DAYS
HEATING TOTAL 1 2
SINCE 7/1 41 MM
COOLING TOTAL 120 131
SINCE 1/1 276 MM
.........................................................
WIND (MPH)
AVERAGE WIND SPEED 6.7
RESULTANT WIND SPEED/DIRECTION 5/280
HIGHEST WIND SPEED/DIRECTION 21/290 DATE 09/03
21/290 09/19
HIGHEST GUST SPEED/DIRECTION 27/290 DATE 09/11
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.41
NUMBER OF DAYS FAIR 14
NUMBER OF DAYS PC 9
NUMBER OF DAYS CLOUDY 7
AVERAGE RH (PERCENT) 71
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 6 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 6 FOG W/VIS <= 1/4 MILE 0
HAZE 1
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$