National Weather Service Text Product
AFOS product CLICPR
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLICPR
Product Timestamp: 2025-09-18 07:30 UTC
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579
CDUS45 KRIW 180730
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT THU SEP 18 2025
...................................
...THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 17 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 62 4:53 PM 89 2000 75 -13 76
MINIMUM 49 7:15 AM 19 1965 42 7 45
AVERAGE 56 58 -2
PRECIPITATION (IN)
YESTERDAY 0.82R 0.75 2003 0.03 0.79 0.07
MONTH TO DATE 2.11 0.45 1.66 0.24
SINCE SEP 1 2.11 0.45 1.66 0.24
SINCE JAN 1 9.42 9.28 0.14 7.22
SNOWFALL (IN)
YESTERDAY 0.0 4.4 1965 0.0 0.0 0.0
MONTH TO DATE 0.0 0.4 -0.4 0.0
SINCE SEP 1 0.0 0.4 -0.4 0.0
SINCE JUL 1 0.0 0.4 -0.4 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 9 7 2 4
MONTH TO DATE 58 81 -23 29
SINCE SEP 1 58 81 -23 29
SINCE JUL 1 68 126 -58 67
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 15 27 -12 51
SINCE SEP 1 15 27 -12 51
SINCE JAN 1 465 439 26 526
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 7.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 2:00 AM
LOWEST 56 5:00 PM
AVERAGE 78
..........................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 92 2014
MINIMUM TEMPERATURE (F) 42 19 1965
SUNRISE AND SUNSET
SEPTEMBER 18 2025.....SUNRISE 6:49 AM MDT SUNSET 7:10 PM MDT
SEPTEMBER 19 2025.....SUNRISE 6:50 AM MDT SUNSET 7:08 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$