732
CDUS45 KRIW 190730
CLIGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT FRI SEP 19 2025
...............................
..THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 18 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 79 4:44 PM 90 2004 76 3 68
2021
MINIMUM 44 6:03 AM 27 2003 44 0 50
AVERAGE 62 60 2 59
PRECIPITATION (IN)
YESTERDAY 0.00 0.16 2024 0.03 -0.03 0.16
MONTH TO DATE 0.12 0.44 -0.32 0.38
SINCE SEP 1 0.12 0.44 -0.32 0.38
SINCE JAN 1 4.32 4.26 0.06 5.69
DEGREE DAYS
HEATING
YESTERDAY 3 6 -3 6
MONTH TO DATE 39 66 -27 27
SINCE SEP 1 39 66 -27 27
SINCE JUL 1 39 85 -46 40
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 45 41 4 69
SINCE SEP 1 45 41 4 69
SINCE JAN 1 786 737 49 810
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION N (340)
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 4.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 85 6:00 AM
LOWEST 19 5:00 PM
AVERAGE 52
......................................................
THE GREYBULL WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 75 92 2010
MINIMUM TEMPERATURE (F) 44 30 2003
SUNRISE AND SUNSET
SEPTEMBER 19 2025.....SUNRISE 6:56 AM MDT SUNSET 7:15 PM MDT
SEPTEMBER 20 2025.....SUNRISE 6:57 AM MDT SUNSET 7:13 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page