Climatological Report (Monthly)
Issued by NWS
Issued by NWS
479
CXUS55 KRIW 021810
CLMLND
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1014 AM MST THU JAN 02 2025
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR LANDER FOR THE MONTH OF
DECEMBER 2024...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF DECEMBER 2024 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
...LANDER WAS WARMER AND DRIER THAN NORMAL IN DECEMBER....
THE AVERAGE TEMPERATURE FOR LANDER IN DECEMBER WAS 32.9 DEGREES
WHICH WAS 11.3 DEGREES ABOVE NORMAL. IT WAS THE 3RD WARMEST DECEMBER
ON RECORD. THE WARMEST READING FOR THE MONTH WAS 59 DEGREES ON THE
3RD. THE HIGH ON THE 20TH OF 56 BROKE THE RECORD OF 55 DEGREES SET
WAY BACK IN 1917. THE COLDEST TEMPERATURE WAS 10 DEGREES ON THE 31ST.
PRECIPITATION FOR THE MONTH WAS 0.04 INCHES...WHICH IS JUST 6
PERCENT OF NORMAL. THE WETTEST 24-HOUR PERIOD WAS THE 30TH WHEN 0.04
INCHES OF PRECIPITATION FELL. NO PRECIPITATION OR SNOWFALL RECORDS
WERE BROKEN.
SNOWFALL FOR THE MONTH WAS 1.4 INCHES. THIS IS 15 PERCENT OF NORMAL.
THE SNOWIEST 24-HOUR PERIOD WAS THE 30TH WITH 1.4 INCHES. THE
HIGHEST WIND GUST WAS 52 MPH AND OCCURRED ON THE 15TH FROM THE WEST.
...THE LANDER WY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2024...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1891 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..............................................................
TEMPERATURE (F)
RECORD
HIGH 65 12/11/1937
12/10/1933
LOW -40 12/19/1924
HIGHEST 59 12/03
LOWEST 10 12/31
AVG. MAXIMUM 45.7 32.9 12.8
AVG. MINIMUM 20.0 10.2 9.8
MEAN 32.9 21.6 11.3
DAYS MAX >= 90 0
DAYS MAX <= 32 1
DAYS MIN <= 32 31
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 2.06 1909
MINIMUM T 1933
TOTALS 0.04 0.63 -0.59 0.71
DAILY AVG. 0.00 0.02 -0.02
DAYS >= .01 1
DAYS >= .10 0
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.04 12/30 TO 12/30
STORM TOTAL 0.04
SNOWFALL (INCHES)
TOTALS 1.4 9.3 -7.9
SINCE 7/1 11.7 31.9 -20.2
SNOWDEPTH AVG. 0
DAYS >= 1.0 1
DEGREE DAYS
HEATING TOTAL 986 1347 -361
SINCE 7/1 2415 3177 -762
COOLING TOTAL 0 0 0
SINCE 1/1 644 485 159
..............................................................
WIND (MPH)
AVERAGE WIND SPEED 4.8
RESULTANT WIND SPEED/DIRECTION 1/240
HIGHEST WIND SPEED/DIRECTION 37/270 DATE 12/15
HIGHEST GUST SPEED/DIRECTION 52/280 DATE 12/15
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.11
NUMBER OF DAYS FAIR 28
NUMBER OF DAYS PC 3
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 50
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 1
LIGHT SNOW 1 SLEET 0
FOG 1 FOG W/VIS <= 1/4 MILE 1
HAZE 1
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
LOOKING AHEAD TO JANUARY 2025. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 30 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 7 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 32
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 9. THE AVERAGE MONTHLY
PRECIPITATION IS 0.51 INCHES. THE AVERAGE SNOWFALL IS 8.2 INCHES.
$$