451
CXUS55 KRIW 011832
CLMP60

CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1115 AM MST MON DEC 01 2025

...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR LAKE YELLOWSTONE FOR THE
MONTH OF NOVEMBER 2025...

...OFFICIAL CLIMATE DATA FOR THE MONTH OF NOVEMBER 2025 WILL BE
AVAILABLE APPROXIMATELY IN 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

...LAKE YELLOWSTONE WAS WARMER AND DRIER THAN NORMAL IN NOVEMBER...

AVERAGE TEMPERATURE FOR LAKE YELLOWSTONE IN NOVEMBER WAS 29.8
DEGREES WHICH IS 8.3 DEGREES ABOVE NORMAL. IT WAS THE WARMEST
NOVEMBER SINCE RECORDS BEGAN IN 1998. THE WARMEST READING OF THE
MONTH WAS 53 DEGREES ON THE 3RD. THE 21ST HIGH OF 43 TIED THE 2006
RECORD. THE COLDEST READING OF THE MONTH WAS -8 DEGREES ON THE 29TH.

TOTAL PRECIPITATION AT LAKE YELLOWSTONE WAS 1.09 INCHES...WHICH WAS
53 PERCENT OF NORMAL. IT WAS THE  5TH DRIEST NOVEMBER SINCE RECORDS
BEGAN IN 1998. THE WETTEST 24-HOUR PERIOD DURING THE MONTH WAS THE
5TH-6TH WHEN 0.21 INCHES OF PRECIPITATION FELL. THE HIGHEST WIND
GUST WAS 35 MPH FROM THE NORTHWEST ON THE 7TH.

...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR THE MONTH OF NOVEMBER
2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             57   11/01/2014
                       11/12/1999
                       11/07/1999
 LOW             -23   11/25/2010
HIGHEST           53   11/03
LOWEST            -8   11/29
AVG. MAXIMUM    39.8               32.0     7.8
AVG. MINIMUM    19.8               11.0     8.8
MEAN            29.8               21.5     8.3
DAYS MAX >= 90     0
DAYS MAX <= 32     5
DAYS MIN <= 32    30
DAYS MIN <= 0      2

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        5.18   2017
 MINIMUM        0.42   2000
TOTALS          1.09               2.06   -0.97     1.16
DAILY AVG.      0.04               0.07   -0.03
DAYS >= .01       12
DAYS >= .10        5
DAYS >= .50        0
DAYS >= 1.00       0
GREATEST
 24 HR. TOTAL   0.21   11/05 TO 11/06
 STORM TOTAL    0.20

DEGREE DAYS
HEATING TOTAL   1049               1305    -256
 SINCE 7/1      2958               3506    -548
COOLING TOTAL      0                  0       0
 SINCE 1/1         1                  0       1
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              2.4
RESULTANT WIND SPEED/DIRECTION   0/260
HIGHEST WIND SPEED/DIRECTION    18/260    DATE  11/02
HIGHEST GUST SPEED/DIRECTION    35/300    DATE  11/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.00
NUMBER OF DAYS FAIR           30
NUMBER OF DAYS PC              0
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                5     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                7     SLEET                      0
FOG                       0     FOG W/VIS <= 1/4 MILE      0
HAZE                      0

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

LOOKING AHEAD TO DECEMBER 2025. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 26 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 6 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 23 DEGREES
AND THE AVERAGE LOW TEMPERATURE IS 1 DEGREE. THE AVERAGE MONTHLY
PRECIPITATION IS 2.35 INCHES.

$$