Climatological Report (Daily)
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575
CDUS45 KRIW 220045
CLILND

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT MON SEP 21 2026

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

...THE LANDER WY CLIMATE SUMMARY FOR SEPTEMBER 21 2026...
VALID TODAY AS OF 0600 PM LOCAL TIME.

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1891 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         69   4:33 PM  87    1905  72     -3       80
  MINIMUM         45   6:45 AM  25    1983  43      2       48
  AVERAGE         57                        57      0       64

PRECIPITATION (IN)
  TODAY            0.00          1.63 1895   0.04  -0.04      T
  MONTH TO DATE    2.08                      0.57   1.51     0.36
  SINCE SEP 1      2.08                      0.57   1.51     0.36
  SINCE JAN 1      8.44                     10.01  -1.57    10.37

SNOWFALL (IN)
  TODAY           MM                         0.1   MM        0.0
  MONTH TO DATE    0.0                       0.6   -0.6      0.0
  SINCE SEP 1      0.0                       0.6   -0.6      0.0
  SINCE JUL 1      0.0                       0.6   -0.6      0.0
  SNOW DEPTH      MM

DEGREE DAYS
 HEATING
  TODAY            8                         8      0        1
  MONTH TO DATE   48                       101    -53       64
  SINCE SEP 1     48                       101    -53       64
  SINCE JUL 1     51                       140    -89       69

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE   43                        31     12       42
  SINCE SEP 1     43                        31     12       42
  SINCE JAN 1    713                       483    230      569
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    10   HIGHEST WIND DIRECTION    NE (30)
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION    NE (30)
  AVERAGE WIND SPEED     3.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93
 LOWEST     43
 AVERAGE    68

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


THE LANDER WY CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   71        90      1958
 MINIMUM TEMPERATURE (F)   42         7      1895


SUNRISE AND SUNSET
SEPTEMBER 21 2026.....SUNRISE   7:01 AM MDT   SUNSET   7:14 PM MDT
SEPTEMBER 22 2026.....SUNRISE   7:02 AM MDT   SUNSET   7:12 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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