Climatological Report (Daily)
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172
CDUS45 KRIW 010045
CLILND

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT SUN MAY 31 2026

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

...THE LANDER WY CLIMATE SUMMARY FOR MAY 31 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         70   4:57 PM  88    2020  72     -2       82
  MINIMUM         46   4:42 AM  26    1919  44      2       50
  AVERAGE         58                        58      0       66

PRECIPITATION (IN)
  TODAY            0.00          0.96 1991   0.07  -0.07     0.00
  MONTH TO DATE    1.89                      2.68  -0.79     1.88
  SINCE MAR 1      4.28                      6.04  -1.76     7.48
  SINCE JAN 1      4.69                      7.25  -2.56     8.56

SNOWFALL (IN)
  TODAY           MM                         0.0   MM        0.0
  MONTH TO DATE   12.5                       4.5    8.0      3.4
  SINCE MAR 1     29.9                      35.3   -5.4     48.7
  SINCE JUL 1     38.1                      87.5  -49.4     79.0
  SNOW DEPTH      MM

DEGREE DAYS
 HEATING
  TODAY            7                         8     -1        0
  MONTH TO DATE  309                       386    -77      324
  SINCE MAR 1   1431                      1937   -506     1783
  SINCE JUL 1   5514                      7588  -2074     6812

 COOLING
  TODAY            0                         1     -1        1
  MONTH TO DATE   13                         5      8        8
  SINCE MAR 1     14                         5      9        8
  SINCE JAN 1     14                         5      9        8
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    31   HIGHEST WIND DIRECTION     W (250)
  HIGHEST GUST SPEED    44   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED    11.1


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
  THUNDERSTORM


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    80
 LOWEST     15
 AVERAGE    48

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


THE LANDER WY CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   72        89      2020
 MINIMUM TEMPERATURE (F)   44        28      1917


SUNRISE AND SUNSET
MAY 31 2026...........SUNRISE   5:40 AM MDT   SUNSET   8:46 PM MDT
JUNE  1 2026..........SUNRISE   5:39 AM MDT   SUNSET   8:47 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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