663
CXUS55 KRIW 011527
CLMGEY
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
919 AM MDT WED JUL 01 2026
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR GREYBULL FOR THE MONTH OF
JUNE 2026...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF JUNE 2026 WILL BE
AVAILABLE IN APPROXIMATELY 60 DAYS FROM THE NATIONAL CENTERS FOR
ENVIRONMENTAL INFORMATION (HTTP://WWW.NCDC.NOAA.GOV/CDO-
WEB/DATASETS). UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON THE
INTERNET AT HTTP://WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW
..GREYBULL IN JUNE WAS DRIER AND COLDER THAN NORMAL.
THE AVERAGE TEMPERATURE FOR GREYBULL IN JUNE WAS 65.7 DEGREES WHICH
IS 1.3 DEGREES BELOW NORMAL. THE WARMEST TEMPERATURE FOR THE MONTH
WAS 99 DEGREES ON THE 6TH. THIS BROKE THE 2004 RECORD OF 95. THE
COLDEST TEMPERATURE WAS 40 DEGREES ON THE 8TH.
PRECIPITATION FOR THE MONTH WAS 0.41 INCHES...WHICH IS 38 PERCENT OF
NORMAL. THE WETTEST 24-HOUR PERIOD HAD 0.22 INCHES ON THE 25TH AND
BROKE THE 2020 RECORD OF 0.21. THE HIGHEST WIND GUST WAS 51 MPH. IT
OCCURRED ON THE 27TH FROM THE WEST.
..THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF JUNE 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..........................................................
TEMPERATURE (F)
RECORD
HIGH 108 06/15/2021
LOW 32 06/07/2009
HIGHEST 99 06/06
LOWEST 40 06/08
AVG. MAXIMUM 81.4 81.4 -0.0
AVG. MINIMUM 50.0 52.6 -2.6
MEAN 65.7 67.0 -1.3
DAYS MAX >= 90 3
DAYS MAX <= 32 0
DAYS MIN <= 32 0
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 3.72 2023
MINIMUM 0.02 2021
TOTALS 0.41 1.08 -0.67 0.46
DAILY AVG. 0.01 0.04 -0.03
DAYS >= .01 6
DAYS >= .10 1
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.22 06/25 TO 06/25
STORM TOTAL 0.22
DEGREE DAYS
HEATING TOTAL 44 62 -18
SINCE 7/1 5803 7548 -1745
COOLING TOTAL 70 122 -52
SINCE 1/1 116 146 -30
..........................................................
WIND (MPH)
AVERAGE WIND SPEED 8.9
RESULTANT WIND SPEED/DIRECTION 4/320
HIGHEST WIND SPEED/DIRECTION 37/270 DATE 06/27
HIGHEST GUST SPEED/DIRECTION 51/280 DATE 06/27
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.19
NUMBER OF DAYS FAIR 23
NUMBER OF DAYS PC 6
NUMBER OF DAYS CLOUDY 1
AVERAGE RH (PERCENT) 45
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 2
LIGHT RAIN 12 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 2 FOG W/VIS <= 1/4 MILE 0
HAZE 1
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
LOOKING AHEAD TO JULY 2026. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 88 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 56 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 92
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 59 DEGREES. THE AVERAGE
MONTHLY PRECIPITATION IS 0.16 INCHES.
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