Climatological Report (Daily)
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CDUS45 KRIW 090045
CLICPR

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT TUE SEP 08 2026

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

...THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 8 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         84   2:38 PM  92    1994  80      4       85
                                      1998
                                      2005
  MINIMUM         40   4:27 AM  29    1962  45     -5       50
                                      2020
  AVERAGE         62                        62      0       68

PRECIPITATION (IN)
  TODAY            0.00          0.84 1989   0.03  -0.03     0.00
  MONTH TO DATE    0.01                      0.19  -0.18     0.01
  SINCE SEP 1      0.01                      0.19  -0.18     0.01
  SINCE JAN 1      6.35                      9.02  -2.67     7.32

SNOWFALL (IN)
  TODAY           MM                         0.0   MM        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      MM

DEGREE DAYS
 HEATING
  TODAY            3                         4     -1        0
  MONTH TO DATE    3                        28    -25       30
  SINCE SEP 1      3                        28    -25       30
  SINCE JUL 1      8                        73    -65       40

 COOLING
  TODAY            0                         2     -2        3
  MONTH TO DATE   37                        17     20        7
  SINCE SEP 1     37                        17     20        7
  SINCE JAN 1    630                       429    201      457
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    29   HIGHEST WIND DIRECTION     W (250)
  HIGHEST GUST SPEED    40   HIGHEST GUST DIRECTION     W (260)
  AVERAGE WIND SPEED     9.3


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    49
 LOWEST     11
 AVERAGE    30

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


THE CASPER WY CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   79        95      2021
 MINIMUM TEMPERATURE (F)   45        24      2020


SUNRISE AND SUNSET
SEPTEMBER  8 2026.....SUNRISE   6:38 AM MDT   SUNSET   7:28 PM MDT
SEPTEMBER  9 2026.....SUNRISE   6:39 AM MDT   SUNSET   7:26 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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