Climatological Report (Daily)
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CDUS45 KRIW 290731
CLIRKS

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
131 AM MDT TUE SEP 29 2026

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

...THE ROCK SPRINGS WY CLIMATE SUMMARY FOR SEPTEMBER 28 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1948 TO 2026


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         59  12:10 PM  85    2024  65     -6       72
  MINIMUM         45  11:19 PM  20    1985  39      6       52
  AVERAGE         52                        52      0

PRECIPITATION (IN)
  YESTERDAY        0.01          0.32 2014   0.03  -0.02     0.00
  MONTH TO DATE    0.31                      0.73  -0.42     0.49
  SINCE SEP 1      0.31                      0.73  -0.42     0.49
  SINCE JAN 1      3.36                      5.97  -2.61     3.43

DEGREE DAYS
 HEATING
  YESTERDAY       13                        13      0        3
  MONTH TO DATE  115                       215   -100      148
  SINCE SEP 1    115                       215   -100      148
  SINCE JUL 1    129                       274   -145      166

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE   21                         8     13       19
  SINCE SEP 1     21                         8     13       19
  SINCE JAN 1    558                       317    241      441
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     N (350)
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION    NW (310)
  AVERAGE WIND SPEED     5.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93          10:00 PM
 LOWEST     51          12:00 AM
 AVERAGE    72

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


THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   65        85      2024
 MINIMUM TEMPERATURE (F)   39        18      1985


SUNRISE AND SUNSET
SEPTEMBER 29 2026.....SUNRISE   7:11 AM MDT   SUNSET   7:01 PM MDT
SEPTEMBER 30 2026.....SUNRISE   7:12 AM MDT   SUNSET   6:59 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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