599
CXUS55 KRIW 021728
CLMRKS

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1111 AM MDT MON JUN 02 2025

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR ROCK SPRINGS FOR THE
MONTH OF MAY 2025...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF MAY 2025 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

...ROCK SPRINGS WAS DRIER AND WARMER THAN NORMAL IN MAY...

THE AVERAGE TEMPERATURE FOR ROCK SPRINGS IN MAY WAS 53.6 DEGREES
WHICH WAS 2.8 DEGREES ABOVE NORMAL. THE WARMEST READING FOR THE
MONTH WAS 83 DEGREES ON THE 31ST. THE 10TH HIGH OF 79 BROKE THE 2004
RECORD OF 76. THE COLDEST TEMPERATURE WAS 30 DEGREES ON THE 6TH AND
16TH.

PRECIPITATION FOR THE MONTH WAS 0.34 INCHES...WHICH WAS 27 PERCENT
OF NORMAL. THE WETTEST 24-HOUR PERIOD WAS ON THE 5TH-6TH WITH 0.11
INCHES. NO PRECIPITATION RECORDS WERE BROKEN THIS MONTH. THE HIGHEST
WIND GUST WAS 60 MPH FROM THE WEST ON THE 13TH

...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR THE MONTH OF MAY 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1948 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             90   05/31/2002
 LOW              18   05/07/2010
                       05/05/2010
                       05/02/1954
HIGHEST           83   05/31
LOWEST            30   05/06
                       05/16
AVG. MAXIMUM    67.8               63.2     4.6
AVG. MINIMUM    39.4               38.4     1.0
MEAN            53.6               50.8     2.8
DAYS MAX >= 90     0
DAYS MAX <= 32     0
DAYS MIN <= 32     6
DAYS MIN <= 0      0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        3.67   1995
 MINIMUM        0.00   1974
TOTALS          0.34               1.27   -0.93     0.80
DAILY AVG.      0.01               0.04   -0.03
DAYS >= .01        9
DAYS >= .10        0
DAYS >= .50        0
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.11   05/05 TO 05/06
 STORM TOTAL    0.08

SNOWFALL (INCHES)
TOTALS            MM                2.7      MM
SINCE 7/1         MM               53.6      MM
SNOWDEPTH AVG.    MM
DAYS >= 1.0       MM

DEGREE DAYS
HEATING TOTAL    350                442     -92
 SINCE 7/1      7002               7905    -903
COOLING TOTAL      4                  2       2
 SINCE 1/1         4                  2       2
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              11.5
RESULTANT WIND SPEED/DIRECTION   5/250
HIGHEST WIND SPEED/DIRECTION    48/260    DATE  05/13
HIGHEST GUST SPEED/DIRECTION    60/260    DATE  05/13

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.30
NUMBER OF DAYS FAIR           17
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     46

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              8     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                1     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.

LOOKING AHEAD TO JUNE 2025. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 70 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 43 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 81
DEGREES AND THE AVERAGE LOW TEMPERATURE IS 51. THE AVERAGE MONTHLY
PRECIPITATION IS 0.70 INCHES.

$$