Climatological Report (Monthly)
Issued by NWS

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CXUS56 KSEW 011031
CLMOLM

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
331 AM PDT TUE JUN 01 2021

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

...THE OLYMPIA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MAY 2021...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1941 TO 2021

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             96   05/28/1983
 LOW              25   05/01/1954
HIGHEST           82   05/31         MM      MM       87  05/10
LOWEST            34   05/19         MM      MM       32  05/01
AVG. MAXIMUM    66.3               66.1     0.2     67.3
AVG. MINIMUM    42.3               43.0    -0.7     45.1
MEAN            54.3               54.5    -0.2     56.2
DAYS MAX >= 90     0                0.1    -0.1        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                1.1    -1.1        1
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        5.83   1948
 MINIMUM        0.15   2016
TOTALS          1.81               2.26   -0.45     2.87
DAILY AVG.      0.06               0.07   -0.01     0.09
DAYS >= .01       10               11.4    -1.4       13
DAYS >= .10        6                6.5    -0.5        9
DAYS >= .50        1                1.2    -0.2        2
DAYS >= 1.00       0                0.1    -0.1        0
GREATEST
 24 HR. TOTAL   0.59   05/06 TO 05/07

DEGREE DAYS
HEATING TOTAL    323                326      -3      271
 SINCE 7/1      4901               5186    -285     5031
COOLING TOTAL      0                  2      -2        6
 SINCE 1/1         0                  2      -2        6
................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.7
HIGHEST WIND SPEED/DIRECTION    23/230    DATE  05/23
HIGHEST GUST SPEED/DIRECTION    35/220    DATE  05/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.48
NUMBER OF DAYS FAIR            9
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      21     FOG W/VIS <= 1/4 MILE      3
HAZE                      5

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

$$


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