Climatological Report (Monthly)
Issued by NWS

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CXUS55 KRIW 111900
CLMCPR

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

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR CASPER 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

...MAY WAS WARMER THAN NORMAL FOR CASPER...

THE AVERAGE TEMPERATURE FOR CASPER IN MAY WAS 55.2 DEGREES WHICH WAS
3.2 DEGREES ABOVE NORMAL. THE WARMEST READING FOR THE MONTH WAS 81
DEGREES ON THE 22ND AND 31ST. THE COLDEST TEMPERATURE WAS 26 DEGREES
ON THE 1ST. NO TEMPERATURE RECORDS WERE BROKEN.

PRECIPITATION FOR THE MONTH WAS 2.03 INCHES...WHICH IS 92 PERCENT OF
NORMAL THE WETTEST 24-HOUR PERIOD WAS ON THE 23RD-24TH WHEN 0.53
INCHES FELL. NO PRECIPITATION RECORDS WERE BROKEN. THE HIGHEST WIND
GUST WAS 51 MPH FROM THE SOUTHWEST ON THE 6TH

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

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             95   05/29/2003
 LOW              16   05/12/1953
HIGHEST           81   05/22
                       05/31
LOWEST            26   05/01
AVG. MAXIMUM    70.3               66.8     3.5
AVG. MINIMUM    40.1               37.1     3.0
MEAN            55.2               52.0     3.2
DAYS MAX >= 90     0
DAYS MAX <= 32     0
DAYS MIN <= 32     4
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        6.46   1978
 MINIMUM        0.30   2020
TOTALS          2.03               2.21   -0.18     2.61
DAILY AVG.      0.07               0.07   -0.00
DAYS >= .01       14
DAYS >= .10        9
DAYS >= .50        1
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.53   05/24 TO 05/24
 STORM TOTAL    0.53

SNOWFALL (INCHES)
TOTALS           0.0                2.6    -2.6
SINCE 7/1      134.3               71.7    62.6
SNOWDEPTH AVG.     0
DAYS >= 1.0        0

DEGREE DAYS
HEATING TOTAL    295                409    -114
 SINCE 7/1      7938               7361     577
COOLING TOTAL      0                  4      -4
 SINCE 1/1         0                  4      -4
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              9.5
RESULTANT WIND SPEED/DIRECTION   1/290
HIGHEST WIND SPEED/DIRECTION    37/230    DATE  05/06
HIGHEST GUST SPEED/DIRECTION    51/230    DATE  05/06

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.27
NUMBER OF DAYS FAIR           25
NUMBER OF DAYS PC              1
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              9     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       4
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      0
HAZE                      3

-  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 74 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 42 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 85
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 49. THE AVERAGE MONTHLY
PRECIPITATION IS 1.34 INCHES. THE AVERAGE MONTHLY SNOWFALL IS 0.1
INCHES.

$$


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