553
CXUS55 KRIW 011708
CLMRKS
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1055 AM MDT FRI MAY 01 2026
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR ROCK SPRINGS FOR THE
MONTH OF APRIL 2026...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF APRIL 2026 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 APRIL
THE AVERAGE TEMPERATURE FOR ROCK SPRINGS IN APRIL WAS 43.1 DEGREES
WHICH WAS 1.9 DEGREES ABOVE NORMAL. THE WARMEST READING FOR THE
MONTH WAS 74 DEGREES ON THE 21ST. THE COLDEST TEMPERATURE WAS 16
DEGREES ON THE 17TH. THE 25TH LOW OF 19 BROKE THE 1950 RECORD OF 20
DEGREES.
PRECIPITATION FOR THE MONTH WAS 0.59 INCHES...WHICH WAS 65 PERCENT
OF NORMAL. THE WETTEST 24-HOUR PERIOD WAS ON THE 1ST-2ND WITH 0.26
INCHES. NO PRECIPITATION RECORDS WERE BROKEN. THE HIGHEST WIND GUST
WAS 57 MPH FROM THE WEST ON THE 2ND. THERE WAS ALSO A GUST TO 56 MPH
FROM THE WEST ON THE 24TH.
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1948 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..........................................................
TEMPERATURE (F)
RECORD
HIGH 79 04/23/2012
04/29/2007
04/20/1989
LOW 2 04/02/1975
HIGHEST 74 04/21
LOWEST 16 04/17
AVG. MAXIMUM 56.3 52.8 3.5
AVG. MINIMUM 29.8 29.7 0.1
MEAN 43.1 41.2 1.9
DAYS MAX >= 90 0
DAYS MAX <= 32 0
DAYS MIN <= 32 22
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 2.74 1999
MINIMUM T 2013
TOTALS 0.59 0.91 -0.32 0.48
DAILY AVG. 0.02 0.03 -0.01
DAYS >= .01 5
DAYS >= .10 3
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.26 04/01 TO 04/02
STORM TOTAL 0.22
SNOWFALL (INCHES)
TOTALS MM 8.8 MM
SINCE 7/1 MM 50.9 MM
SNOWDEPTH AVG. MM
DAYS >= 1.0 MM
DEGREE DAYS
HEATING TOTAL 652 712 -60
SINCE 7/1 5644 7463 -1819
COOLING TOTAL 0 0 0
SINCE 1/1 0 0 0
..........................................................
WIND (MPH)
AVERAGE WIND SPEED 13.4
RESULTANT WIND SPEED/DIRECTION 9/250
HIGHEST WIND SPEED/DIRECTION 45/270 DATE 04/22
HIGHEST GUST SPEED/DIRECTION 57/280 DATE 04/22
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.37
NUMBER OF DAYS FAIR 15
NUMBER OF DAYS PC 11
NUMBER OF DAYS CLOUDY 4
AVERAGE RH (PERCENT) 50
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 10 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 1 SNOW 3
LIGHT SNOW 6 SLEET 0
FOG 7 FOG W/VIS <= 1/4 MILE 1
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
LOOKING AHEAD TO MAY 2026. THE AVERAGE HIGH TEMPERATURE ON THE FIRST
OF THE MONTH IS 57 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 33
DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 69 DEGREES AND
THE AVERAGE LOW TEMPERATURE IS 43. THE AVERAGE MONTHLY PRECIPITATION
IS 1.27 INCHES.
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