Climatological Report (Daily)
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270
CDUS45 KRIW 010732
CLIP60

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
132 AM MDT THU OCT 01 2026

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

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 30 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         63   3:40 PM  72    2011  53     10       58
  MINIMUM         30   7:00 AM  20    2021  27      3       35
  AVERAGE         47                        40      7       47

PRECIPITATION (IN)
  YESTERDAY        0.00          0.70 2013   0.05  -0.05     0.03
  MONTH TO DATE    1.71                      1.57   0.14     1.46
  SINCE SEP 1      1.71                      1.57   0.14     1.46
  SINCE JAN 1     15.63                     16.83  -1.20    13.17

DEGREE DAYS
 HEATING
  YESTERDAY       18                        25     -7       18
  MONTH TO DATE  507                       588    -81      484
  SINCE SEP 1    507                       588    -81      484
  SINCE JUL 1    875                      1230   -355     1000

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE SEP 1      0                         0      0        0
  SINCE JAN 1      2                         0      2        1
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     W (260)
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION     W (270)
  AVERAGE WIND SPEED     2.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    96           4:00 AM
 LOWEST     30           4:00 PM
 AVERAGE    63

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


THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   53        72      2011
 MINIMUM TEMPERATURE (F)   27        22      2002
                                             2021
                                             2024


SUNRISE AND SUNSET
OCTOBER  1 2026.......SUNRISE   7:20 AM MDT   SUNSET   7:02 PM MDT
OCTOBER  2 2026.......SUNRISE   7:21 AM MDT   SUNSET   7:00 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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