Climatological Report (Daily)
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597
CDUS45 KRIW 110045
CLICPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT THU SEP 10 2026

...................................

...THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 10 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         87   4:08 PM  95    2021  79      8       90
  MINIMUM         44   3:28 AM  27    2020  44      0       43
  AVERAGE         66                        62      4       67

PRECIPITATION (IN)
  TODAY            0.00          0.40 1986   0.03  -0.03     0.00
  MONTH TO DATE    0.01                      0.24  -0.23     0.01
  SINCE SEP 1      0.01                      0.24  -0.23     0.01
  SINCE JAN 1      6.35                      9.07  -2.72     7.32

SNOWFALL (IN)
  TODAY           MM                         0.1   MM        0.0
  MONTH TO DATE    0.0                       0.2   -0.2      0.0
  SINCE SEP 1      0.0                       0.2   -0.2      0.0
  SINCE JUL 1      0.0                       0.2   -0.2      0.0
  SNOW DEPTH      MM

DEGREE DAYS
 HEATING
  TODAY            0                         5     -5        0
  MONTH TO DATE    8                        38    -30       32
  SINCE SEP 1      8                        38    -30       32
  SINCE JUL 1     13                        83    -70       42

 COOLING
  TODAY            1                         1      0        2
  MONTH TO DATE   38                        20     18        9
  SINCE SEP 1     38                        20     18        9
  SINCE JAN 1    631                       432    199      459
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    25   HIGHEST WIND DIRECTION    SW (210)
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION    SW (210)
  AVERAGE WIND SPEED    13.4


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    45
 LOWEST      8
 AVERAGE    27

..........................................................


THE CASPER WY CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   78        91      1993
 MINIMUM TEMPERATURE (F)   44        26      2014


SUNRISE AND SUNSET
SEPTEMBER 10 2026.....SUNRISE   6:40 AM MDT   SUNSET   7:24 PM MDT
SEPTEMBER 11 2026.....SUNRISE   6:41 AM MDT   SUNSET   7:23 PM MDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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