Climatological Report (Monthly)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
031
CXUS55 KRIW 020142
CLMRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
608 PM MST SAT FEB 01 2025
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON FOR THE MONTH OF
JANUARY 2025...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF JANUARY 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
...RIVERTON WAS COLDER AND WETTER THAN NORMAL IN JANUARY....
THE AVERAGE TEMPERATURE FOR RIVERTON IN JANUARY WAS 12.3 DEGREES
WHICH WAS 6.9 DEGREES BELOW NORMAL. IT WAS THE 4TH COLDEST JANUARY
SINCE RECORDS BEGAN IN 1996. THE WARMEST READING FOR THE MONTH WAS
36 DEGREES ON THE 11TH AND 17TH. THE COLDEST READING WAS 19 DEGREES
BELOW ZERO ON THE 20TH. THIS BROKE THE 2008 RECORD OF 4 BELOW. THE
LOW ON THE 19TH OF 14 BELOW BROKE THE 2023 RECORD OF 8 BELOW. THE
26TH SAW 11 DEGREES BELOW ZERO AND BROKE THE 2009 RECORD OF 9 BELOW
ZERO.
PRECIPITATION FOR THE MONTH WAS 0.42 INCHES...WHICH IS 145 PERCENT
OF NORMAL. IT WAS THE 4TH WETTEST JANUARY ON RECORD. THE WETTEST 24-
HOURS WAS THE 4TH WHEN 0.21 INCHES FELL. THE 17TH HAD 0.11 INCHES
AND BROKE THE 2007 RECORD OF 0.04. THE 18TH HAD 0.03 INCHES AND
BROKE 0.01 FROM 2007.
SNOWFALL FOR THE MONTH WAS 6.3 INCHES. THE SNOWIEST DAY WAS THE 4TH
WITH 2.9 INCHES. THE HIGHEST WIND GUST WAS 54 MPH FROM THE NORTHWEST
AND OCCURRED ON THE 21ST.
...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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 63 01/01/1997
01/01/1997
LOW -31 01/31/2023
HIGHEST 36 01/11
01/17
LOWEST -19 01/20
AVG. MAXIMUM 23.0 30.6 -7.6
AVG. MINIMUM 1.5 7.9 -6.4
MEAN 12.3 19.2 -6.9
DAYS MAX >= 90 0
DAYS MAX <= 32 26
DAYS MIN <= 32 31
DAYS MIN <= 0 12
PRECIPITATION (INCHES)
RECORD
MAXIMUM 1.46 2023
MINIMUM 0.01 1999
TOTALS 0.42 0.29 0.13 0.36
DAILY AVG. 0.01 0.01 0.00
DAYS >= .01 8
DAYS >= .10 2
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.21 01/04 TO 01/04
STORM TOTAL 0.21
SNOWFALL (INCHES)
TOTALS 6.3 MM MM
SINCE 7/1 11.1 MM MM
SNOWDEPTH AVG. 2
DAYS >= 1.0 2
DEGREE DAYS
HEATING TOTAL 1628 1418 210
SINCE 7/1 4239 4723 -484
COOLING TOTAL 0 0 0
SINCE 1/1 0 0 0
..............................................................
WIND (MPH)
AVERAGE WIND SPEED 5.7
RESULTANT WIND SPEED/DIRECTION 2/320
HIGHEST WIND SPEED/DIRECTION 38/300 DATE 01/21
HIGHEST GUST SPEED/DIRECTION 54/300 DATE 01/21
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.36
NUMBER OF DAYS FAIR 16
NUMBER OF DAYS PC 12
NUMBER OF DAYS CLOUDY 3
AVERAGE RH (PERCENT) 74
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 0 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 1 SNOW 2
LIGHT SNOW 12 SLEET 0
FOG 17 FOG W/VIS <= 1/4 MILE 5
HAZE 7
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
LOOKING AHEAD TO FEBRUARY 2025. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 32 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 9 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 41 DEGREES
AND THE AVERAGE LOW TEMPERATURE IS 16. THE AVERAGE MONTHLY
PRECIPITATION IS 0.40 INCHES.
$$