National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
CXUS56 KSEW 011034
CLMSEW

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
334 AM PDT THU JUN 01 2023

...................................

...THE SEATTLE WA WFO CLIMATE SUMMARY FOR THE MONTH OF MAY 2023...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1894 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             90   05/17/2008
 LOW              35   05/07/2002
                       05/06/2002
HIGHEST           85   05/15         MM      MM       71  05/22
LOWEST            43   05/10         MM      MM       40  05/20
AVG. MAXIMUM    69.4               65.3     4.1     61.5
AVG. MINIMUM    51.4               48.3     3.1     46.7
MEAN            60.4               56.8     3.6     54.1
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        4.21   2020
 MINIMUM        0.30   2018
TOTALS          0.88               2.16   -1.28     3.80
DAILY AVG.      0.03               0.07   -0.04     0.12
DAYS >= .01        6               12.2    -6.2       19
DAYS >= .10        1                6.4    -5.4       10
DAYS >= .50        1                0.9     0.1        2
DAYS >= 1.00       0                0.1    -0.1        0

DEGREE DAYS
HEATING TOTAL    156                258    -102      331
 SINCE 7/1      4238               4356    -118       MM
COOLING TOTAL     21                  4      17        0
 SINCE 1/1        21                  4      17       MM
................................................................


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                7     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       2     FOG W/VIS <= 1/4 MILE      0
HAZE                      0

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

$$