600
CDUS45 KRIW 190045
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
545 PM MST SUN JAN 18 2026
...............................
..THE RIVERTON WY CLIMATE SUMMARY FOR JANUARY 18 2026
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1995 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 41 12:32 PM 53 1999 31 10 11
MINIMUM 15 5:45 AM -17 1996 8 7 -9
AVERAGE 28 19 9 1
PRECIPITATION (IN)
TODAY 0.00 0.03 2025 0.01 -0.01 0.03
MONTH TO DATE 0.01 0.15 -0.14 0.38
SINCE DEC 1 0.19 0.41 -0.22 0.43
SINCE JAN 1 0.01 0.15 -0.14 0.38
SNOWFALL (IN)
TODAY MM 0.3
MONTH TO DATE 0.2 5.7
SINCE DEC 1 1.7 6.7
SINCE JUL 1 3.7 10.5
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 37 46 -9 64
MONTH TO DATE 541 832 -291 870
SINCE DEC 1 1453 2239 -786 1964
SINCE JUL 1 2896 4136 -1240 3481
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 0 0 0 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 9.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 62
LOWEST 39
AVERAGE 51
......................................................
THE RIVERTON WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 31 57 2009
MINIMUM TEMPERATURE (F) 8 -14 2025
SUNRISE AND SUNSET
JANUARY 18 2026.......SUNRISE 7:41 AM MST SUNSET 5:08 PM MST
JANUARY 19 2026.......SUNRISE 7:40 AM MST SUNSET 5:10 PM MST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page