Climatological Report (Daily)
Issued by NWS
Issued by NWS
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909
CDUS45 KRIW 190045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT SAT JUL 18 2026
...................................
...THE CASPER WY CLIMATE SUMMARY FOR JULY 18 2026...
VALID TODAY AS OF 0600 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 99 2:27 PM 103 1998 90 9 84
MINIMUM 59 5:04 AM 44 1949 54 5 55
1980
2005
AVERAGE 79 72 7 70
PRECIPITATION (IN)
TODAY 0.00 0.34 1941 0.04 -0.04 T
MONTH TO DATE 0.05 0.70 -0.65 0.45
SINCE JUN 1 0.60 2.04 -1.44 0.98
SINCE JAN 1 4.25 7.55 -3.30 5.90
SNOWFALL (IN)
TODAY MM 0.0 MM 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.1 -0.1 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 0 9 -9 5
SINCE JUN 1 92 135 -43 96
SINCE JUL 1 0 9 -9 5
COOLING
TODAY 14 7 7 5
MONTH TO DATE 162 102 60 123
SINCE JUN 1 197 153 44 198
SINCE JAN 1 198 157 41 198
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 5.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87
LOWEST 15
AVERAGE 51
..........................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 90 101 1998
MINIMUM TEMPERATURE (F) 54 45 1972
2008
SUNRISE AND SUNSET
JULY 18 2026..........SUNRISE 5:43 AM MDT SUNSET 8:40 PM MDT
JULY 19 2026..........SUNRISE 5:44 AM MDT SUNSET 8:40 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$