Climatological Report (Monthly)
Issued by NWS
Issued by NWS
677
CXUS55 KRIW 020128
CLMCPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
608 PM MST SAT FEB 01 2025
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR CASPER 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
...JANUARY WAS MUCH COLDER THAN NORMAL FOR CASPER...
THE AVERAGE TEMPERATURE FOR CASPER IN JANUARY WAS 18.5 DEGREES WHICH
WAS 6.6 DEGREES BELOW NORMAL. THE WARMEST READING FOR THE MONTH WAS
44 DEGREES ON THE 30TH AND 31ST. THE COLDEST TEMPERATURE WAS 25
DEGREES BELOW ZERO ON THE 20TH AND BROKE THE 1959 RECORD OF 19 BELOW.
PRECIPITATION FOR THE MONTH WAS 0.48 INCHES...WHICH IS 98 PERCENT OF
NORMAL. THE WETTEST 24-HOUR PERIOD WAS ON THE 17TH-18TH WHEN 0.16
INCHES FELL. THERE WERE NO PRECIPITATION OR SNOWFALL RECORDS BROKEN
THIS MONTH.
SNOWFALL FOR THE MONTH WAS 6.7 INCHES...WHICH IS 74 PERCENT OF
NORMAL. THE SNOWIEST 24-HOUR PERIOD WAS THE 17TH WITH 2 INCHES. THE
HIGHEST WIND GUST WAS 58 MPH FROM THE SOUTHWEST ON THE 21ST.
...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..............................................................
TEMPERATURE (F)
RECORD
HIGH 60 01/31/1971
01/30/1971
LOW -40 01/14/1972
01/13/1972
01/24/1949
HIGHEST 44 01/30
01/31
LOWEST -25 01/20
AVG. MAXIMUM 28.6 35.2 -6.6
AVG. MINIMUM 8.4 15.0 -6.6
MEAN 18.5 25.1 -6.6
DAYS MAX >= 90 0
DAYS MAX <= 32 20
DAYS MIN <= 32 31
DAYS MIN <= 0 5
PRECIPITATION (INCHES)
RECORD
MAXIMUM 1.99 2023
MINIMUM 0.03 2004
TOTALS 0.48 0.49 -0.01 0.36
DAILY AVG. 0.02 0.02 0.00
DAYS >= .01 9
DAYS >= .10 2
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.16 01/17 TO 01/18
STORM TOTAL 0.15
SNOWFALL (INCHES)
TOTALS 6.7 9.0 -2.3
SINCE 7/1 8.2 37.4 -29.2
SNOWDEPTH AVG. 1
DAYS >= 1.0 4
DEGREE DAYS
HEATING TOTAL 1433 1237 196
SINCE 7/1 3903 4293 -390
COOLING TOTAL 0 0 0
SINCE 1/1 0 0 0
..............................................................
WIND (MPH)
AVERAGE WIND SPEED 13.7
RESULTANT WIND SPEED/DIRECTION 10/230
HIGHEST WIND SPEED/DIRECTION 45/210 DATE 01/31
HIGHEST GUST SPEED/DIRECTION 58/210 DATE 01/21
58/210 01/31
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.40
NUMBER OF DAYS FAIR 13
NUMBER OF DAYS PC 14
NUMBER OF DAYS CLOUDY 4
AVERAGE RH (PERCENT) 73
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 0 SNOW 2
LIGHT SNOW 12 SLEET 0
FOG 14 FOG W/VIS <= 1/4 MILE 1
HAZE 2
- 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 36 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 15 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 42
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 18. THE AVERAGE MONTHLY
PRECIPITATION IS 0.56 INCHES. THE AVERAGE SNOWFALL IS 10.9 INCHES.
$$