Climatological Report (Daily)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
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CDUS45 KRIW 290731
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
131 AM MDT TUE SEP 29 2026
...................................
...THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 28 2026...
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)
YESTERDAY
MAXIMUM 65 9:29 AM 86 2001 68 -3 78
2024
MINIMUM 46 11:19 PM 26 1999 39 7 48
AVERAGE 56 54 2 63
PRECIPITATION (IN)
YESTERDAY T 0.56 0.03 -0.03 T
MONTH TO DATE 1.55 0.70 0.85 0.99
SINCE SEP 1 1.55 0.70 0.85 0.99
SINCE JAN 1 4.52 7.06 -2.54 7.24
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2020 0.0
MONTH TO DATE 0.0 0.0
SINCE SEP 1 0.0 0.0
SINCE JUL 1 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 9 12 -3 2
MONTH TO DATE 74 180 -106 93
SINCE SEP 1 74 180 -106 93
SINCE JUL 1 76 216 -140 96
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 44 28 16 37
SINCE SEP 1 44 28 16 37
SINCE JAN 1 757 496 261 611
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 7.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 11:00 PM
LOWEST 46 12:00 PM
AVERAGE 70
..........................................................
THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 67 90 2024
MINIMUM TEMPERATURE (F) 39 29 1999
SUNRISE AND SUNSET
SEPTEMBER 29 2026.....SUNRISE 7:09 AM MDT SUNSET 6:58 PM MDT
SEPTEMBER 30 2026.....SUNRISE 7:10 AM MDT SUNSET 6:56 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$