692
CXUS55 KRIW 092035 CCA
CLMBYG
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
121 PM MST FRI JAN 09 2026
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR BUFFALO FOR THE MONTH OF
DECEMBER 2025...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF DECEMBER 2025 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
..BUFFALO WAS DRIER WITH RECORD WARMTH IN DECEMBER
THE AVERAGE TEMPERATURE FOR BUFFALO IN DECEMBER WAS 35.3 DEGREES
WHICH IS 8.3 DEGREES ABOVE NORMAL. IT WAS THE WARMEST DECEMBER ON
RECORD. THE WARMEST READING FOR THE MONTH WAS 68 DEGREES ON THE 24TH
AND BROKE THE 2019 RECORD OF 54. SEVERAL MORE DAILY HIGH RECORDS
WERE BROKEN. THEY ARE LISTED BELOW. THE COLDEST TEMPERATURE WAS -5
DEGREES ON THE 28TH. THIS BROKE THE 2001 RECORD OF 2 DEGREES.
DATE NEW OLD YEAR
11TH 6458 2004
14TH6761 1998
16TH6058 2023
23RD6357 2019
25TH6160 2005
26TH5451 2022
31ST5550 2005
PRECIPITATION FOR THE MONTH WAS 0.13 INCHES...WHICH IS 76 PERCENT OF
NORMAL. THE WETTEST 24-HOUR PERIOD WAS ON THE 6TH WITH 0.05 INCHES.
THE 9TH HAD 0.04 INCHES AND BROKE A TRACE FROM 2024, 2019 AND 2015.
THE HIGHEST WIND GUST WAS 80 MPH OCCURRING ON THE 17TH AND 18TH FROM
THE NORTHWEST AND ON THE 19TH FROM THE SOUTHWEST.
..THE BUFFALO WY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2025
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 78 12/01/2021
LOW -24 12/21/1998
HIGHEST 68 12/24
LOWEST -5 12/28
AVG. MAXIMUM 46.6 36.8 9.8
AVG. MINIMUM 24.0 17.1 6.9
MEAN 35.3 27.0 8.3
DAYS MAX >= 90 0
DAYS MAX <= 32 3
DAYS MIN <= 32 23
DAYS MIN <= 0 1
PRECIPITATION (INCHES)
RECORD
MAXIMUM 0.54 1999
MINIMUM 0.00 2009
TOTALS 0.13 0.17 -0.04 0.01
DAILY AVG. 0.00 0.01 -0.01
DAYS >= .01 5
DAYS >= .10 0
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.05 12/06 TO 12/06
STORM TOTAL 0.05
DEGREE DAYS
HEATING TOTAL 913 1179 -266
SINCE 7/1 2303 2936 -633
COOLING TOTAL 0 0 0
SINCE 1/1 494 528 -34
..........................................................
WIND (MPH)
AVERAGE WIND SPEED 9.9
RESULTANT WIND SPEED/DIRECTION 3/270
HIGHEST WIND SPEED/DIRECTION 61/240 DATE 12/19
HIGHEST GUST SPEED/DIRECTION 80/330 DATE 12/17
80/320 12/18
80/240 12/19
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.33
NUMBER OF DAYS FAIR 16
NUMBER OF DAYS PC 12
NUMBER OF DAYS CLOUDY 3
AVERAGE RH (PERCENT) 57
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 5 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 1 SNOW 4
LIGHT SNOW 12 SLEET 0
FOG 12 FOG W/VIS <= 1/4 MILE 2
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
LOOKING AHEAD TO JANUARY 2026. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 38 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 17 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 36
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 17. THE AVERAGE MONTHLY
PRECIPITATION IS 0.23 INCHES.
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