Climatological Report (Annual)
Issued by NWS Cheyenne, WY

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000
CXUS55 KCYS 100118
CLACYS

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
618 PM MST SAT JAN 09 2021

...................................

...THE CHEYENNE WYOMING AIRPORT CLIMATE SUMMARY FOR THE YEAR OF 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2021

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH            100   06/23/1954
                       07/11/1939
                       07/14/1881
 LOW             -38   01/09/1875
HIGHEST           96   07/12         58      38       95
                       07/10
                       07/07
LOWEST            -9   02/04         33     -42      -16
AVG. MAXIMUM    61.3               58.6             58.4
AVG. MINIMUM    34.5               34.3             33.2
MEAN            47.9               46.5     1.4     45.8
DAYS MAX >= 90    33               10.4               19
DAYS MAX <= 32    33               32.8               42
DAYS MIN <= 32   185              164.1              187
DAYS MIN <= 0      5                8.1                8

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       23.69   1942
TOTALS         10.03              15.94   -5.91    18.03
DAILY AVG.      0.03               0.04             0.05
DAYS >= .01       81              103.8              116
DAYS >= .10       35               41.0               45
DAYS >= .50        2                8.2                9
DAYS >= 1.00       0                1.8                2
GREATEST
 24 HR. TOTAL   0.78   10/25 TO 10/25
 STORM TOTAL    0.19

SNOWFALL (INCHES)
RECORD
 MAXIMUM      138.3   1980
TOTALS         56.0                60.3   -4.3

DEGREE DAYS
HEATING TOTAL   6746               7111    -365     7332
 SINCE 7/1      2630               2905    -275       MM
COOLING TOTAL    605                349     256      463
 SINCE 1/1       605                348     257      463
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              11.8
HIGHEST WIND SPEED/DIRECTION    58/280    DATE  11/14
HIGHEST GUST SPEED/DIRECTION    74/280    DATE  11/14

SKY COVER
AVERAGE SKY COVER           0.25

AVERAGE RH (PERCENT)     50

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             50     MIXED PRECIP               0
HEAVY RAIN                8     RAIN                      18
LIGHT RAIN               82     FREEZING RAIN              0
LT FREEZING RAIN          9     HAIL                       6
HEAVY SNOW                8     SNOW                      26
LIGHT SNOW               71     SLEET                      1
FOG                      85     FOG W/VIS <= 1/4 MILE     25
HAZE                     42

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

$$



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