Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 111902
CLMGEY

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1252 PM MDT SUN JUN 11 2023

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR GREYBULL FOR THE MONTH OF
MAY 2023...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF MAY 2023 WILL BE AVAILABLE
IN APPROXIMATELY 60 DAYS FROM THE NATIONAL CENTERS FOR ENVIRONMENTAL
INFORMATION (HTTP://WWW.NCDC.NOAA.GOV/CDO-WEB/DATASETS). UNOFFICIAL
ASOS DAILY SUMMARIES ARE AVAILABLE ON THE INTERNET AT
HTTP://WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW

...GREYBULL WAS MUCH DRIER AND WARMER THAN NORMAL IN MAY...

THE AVERAGE TEMPERATURE FOR GREYBULL IN MAY WAS 62.4 DEGREES WHICH
WAS 5.4 DEGREE ABOVE NORMAL. IT WAS THE WARMEST MAY ON RECORD. THE
WARMEST READING FOR THE MONTH WAS 89 DEGREES ON THE 22ND...WHICH
TIED THE 2006 RECORD. THE 21ST HIT 88 WHICH BROKE THE 2002 RECORD OF
87 AND THE 23RD TIED 2014 WITH A HIGH OF 86 DEGREES. THE COLDEST
TEMPERATURE WAS 35 DEGREES ON THE 7TH.

PRECIPITATION FOR THE MONTH WAS 0.53 INCHES...WHICH IS 40 PERCENT OF
NORMAL THE WETTEST 24-HOUR PERIOD OCCURRED ON THE 26TH WITH 0.31
INCHES. NO PRECIPITATION RECORDS WERE BROKEN. THE HIGHEST WIND GUST
WAS 53 MPH FROM THE NORTHWEST ON THE 26TH.

...THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF MAY 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             98   05/29/2003
 LOW              20   05/09/2002
HIGHEST           89   05/22
LOWEST            35   05/07
AVG. MAXIMUM    77.5               70.4     7.1
AVG. MINIMUM    47.3               43.6     3.7
MEAN            62.4               57.0     5.4
DAYS MAX >= 90     0
DAYS MAX <= 32     0
DAYS MIN <= 32     0
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.32   2010
 MINIMUM        0.19   2001
TOTALS          0.53               1.33   -0.80     0.95
DAILY AVG.      0.02               0.04   -0.02
DAYS >= .01        7
DAYS >= .10        1
DAYS >= .50        0
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.31   05/26 TO 05/26
 STORM TOTAL    0.31

DEGREE DAYS
HEATING TOTAL    104                271    -167
 SINCE 7/1      7692               7486     206
COOLING TOTAL     33                 23      10
 SINCE 1/1        33                 24       9
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              8.1
RESULTANT WIND SPEED/DIRECTION   3/330
HIGHEST WIND SPEED/DIRECTION    39/320    DATE  05/26
HIGHEST GUST SPEED/DIRECTION    53/290    DATE  05/26

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.25
NUMBER OF DAYS FAIR           26
NUMBER OF DAYS PC              4
NUMBER OF DAYS CLOUDY          1

AVERAGE RH (PERCENT)     50

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       3     FOG W/VIS <= 1/4 MILE      1
HAZE                      4

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

LOOKING AHEAD TO JUNE 2023...THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 76 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 49 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 87
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 56 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 1.08 INCHES.

$$


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