Climatological Report (Daily)
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CDUS45 KRIW 310045
CLILND

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
545 PM MST TUE DEC 30 2025

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

...THE LANDER WY CLIMATE SUMMARY FOR DECEMBER 30 2025...
VALID TODAY AS OF 0500 PM LOCAL TIME.

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1891 TO 2025


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         41   2:45 PM  64    1980  32      9       42
  MINIMUM         12   7:31 AM -28    1978   9      3       21
  AVERAGE         27                        20      7       32

PRECIPITATION (IN)
  TODAY            0.00          0.62 2010   0.02  -0.02     0.04
  MONTH TO DATE    0.28                      0.61  -0.33     0.04
  SINCE DEC 1      0.28                      0.61  -0.33     0.04
  SINCE JAN 1     13.41                     13.21   0.20     9.23

SNOWFALL (IN)
  TODAY           MM                         0.3   MM        1.4
  MONTH TO DATE    2.6                       9.0   -6.4      1.4
  SINCE DEC 1      2.6                       9.0   -6.4      1.4
  SINCE JUL 1      3.7                      31.6  -27.9     11.7
  SNOW DEPTH      MM

DEGREE DAYS
 HEATING
  TODAY           38                        45     -7       33
  MONTH TO DATE  843                      1304   -461      941
  SINCE DEC 1    843                      1304   -461      941
  SINCE JUL 1   2213                      3132   -919     2370

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1    569                       485     84      644
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED     9   HIGHEST WIND DIRECTION     E (110)
  HIGHEST GUST SPEED    13   HIGHEST GUST DIRECTION    SE (120)
  AVERAGE WIND SPEED     3.6


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    80
 LOWEST     39
 AVERAGE    60

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


THE LANDER WY CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        57      1980
 MINIMUM TEMPERATURE (F)    9       -32      1978


SUNRISE AND SUNSET
DECEMBER 30 2025......SUNRISE   7:45 AM MST   SUNSET   4:50 PM MST
DECEMBER 31 2025......SUNRISE   7:46 AM MST   SUNSET   4:51 PM MST


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




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