Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 070729
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT MON SEP 07 2026
...................................
...THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 6 2026...
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)
YESTERDAY
MAXIMUM 91 1:58 PM 96 1978 80 11 79
2022
MINIMUM 48 5:50 AM 32 2025 46 2 32
AVERAGE 70 63 7
PRECIPITATION (IN)
YESTERDAY 0.00 0.35 1951 0.02 -0.02 0.00
MONTH TO DATE 0.01 0.13 -0.12 0.01
SINCE SEP 1 0.01 0.13 -0.12 0.01
SINCE JAN 1 6.35 8.96 -2.61 7.32
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2020 0.1 -0.1 0.0
MONTH TO DATE 0.0 0.1 -0.1 0.0
SINCE SEP 1 0.0 0.1 -0.1 0.0
SINCE JUL 1 0.0 0.1 -0.1 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 4 -4 9
MONTH TO DATE 0 20 -20 24
SINCE SEP 1 0 20 -20 24
SINCE JUL 1 5 65 -60 34
COOLING
YESTERDAY 5 2 3 0
MONTH TO DATE 34 13 21 4
SINCE SEP 1 34 13 21 4
SINCE JAN 1 627 425 202 454
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 8.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 68 6:00 AM
LOWEST 12 3:00 PM
AVERAGE 40
..........................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 96 2022
MINIMUM TEMPERATURE (F) 45 28 2010
SUNRISE AND SUNSET
SEPTEMBER 7 2026.....SUNRISE 6:37 AM MDT SUNSET 7:30 PM MDT
SEPTEMBER 8 2026.....SUNRISE 6:38 AM MDT SUNSET 7:28 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$