Climatological Report (Daily)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
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951
CDUS45 KRIW 190730
CLIRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT SAT SEP 19 2026
...................................
...THE RIVERTON WY CLIMATE SUMMARY FOR SEPTEMBER 18 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 72 11:49 AM 90 2014 73 -1 75
MINIMUM 50 3:26 AM 28 2003 44 6 41
AVERAGE 61 58 3 58
PRECIPITATION (IN)
YESTERDAY 0.18 0.26 0.03 0.15 0.00
MONTH TO DATE 0.19 0.37 -0.18 0.08
SINCE SEP 1 0.19 0.37 -0.18 0.08
SINCE JAN 1 3.16 6.73 -3.57 6.33
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 4 7 -3 7
MONTH TO DATE 25 84 -59 52
SINCE SEP 1 25 84 -59 52
SINCE JUL 1 27 120 -93 55
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 43 28 15 36
SINCE SEP 1 43 28 15 36
SINCE JAN 1 756 496 260 610
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 6.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 1:00 PM
LOWEST 42 12:00 PM
AVERAGE 65
..........................................................
THE RIVERTON WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 90 2010
MINIMUM TEMPERATURE (F) 43 32 1996
SUNRISE AND SUNSET
SEPTEMBER 19 2026.....SUNRISE 6:58 AM MDT SUNSET 7:16 PM MDT
SEPTEMBER 20 2026.....SUNRISE 6:59 AM MDT SUNSET 7:14 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$