Climatological Report (Monthly)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
242
CXUS55 KRIW 011337
CLMRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
637 AM MST THU JAN 01 2026
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...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1995 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..............................................................
TEMPERATURE (F)
RECORD
HIGH 64 12/24/2025
LOW -31 12/22/2022
HIGHEST 64R 12/24
LOWEST 1 12/01
AVG. MAXIMUM 47.5 30.8 16.7
AVG. MINIMUM 23.0 8.4 14.6
MEAN 35.3 19.6 15.7
DAYS MAX >= 90 0
DAYS MAX <= 32 4
DAYS MIN <= 32 26
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 0.79 2022
MINIMUM T 2001
TOTALS 0.18 0.26 -0.08 0.05
DAILY AVG. 0.01 0.01 0.00
DAYS >= .01 4
DAYS >= .10 1
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.14 12/02 TO 12/03
STORM TOTAL 0.11
SNOWFALL (INCHES)
TOTALS 1.5 MM MM
SINCE 7/1 3.5 MM MM
SNOWDEPTH AVG. 0
DAYS >= 1.0 1
DEGREE DAYS
HEATING TOTAL 912 1407 -495
SINCE 7/1 2355 3306 -951
COOLING TOTAL 0 0 0
SINCE 1/1 611 499 112
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WIND (MPH)
AVERAGE WIND SPEED 10.3
RESULTANT WIND SPEED/DIRECTION 5/270
HIGHEST WIND SPEED/DIRECTION 47/290 DATE 12/17
HIGHEST GUST SPEED/DIRECTION 73/250 DATE 12/10
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.11
NUMBER OF DAYS FAIR 29
NUMBER OF DAYS PC 2
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 56
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 1 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 1
LIGHT SNOW 4 SLEET 0
FOG 4 FOG W/VIS <= 1/4 MILE 2
HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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