Climatological Report (Annual)
Issued by NWS Cheyenne, WY

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000
CXUS55 KCYS 081702
CLACYS

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1002 AM MST SAT JAN 08 2022

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

...THE CHEYENNE WYOMING AIRPORT CLIMATE SUMMARY FOR THE YEAR OF 2021...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1871 TO 2022

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            100   06/23/1954
                       07/11/1939
                       07/14/1881
 LOW             -38   01/09/1875
HIGHEST           96   09/10         58      38       96  07/12
                       07/28
                                                          07/10
                                                          07/07
LOWEST           -15   02/14         33     -48       -9  02/04
AVG. MAXIMUM    60.8               59.2     1.6     61.3
AVG. MINIMUM    35.3               34.6     0.7     34.5
MEAN            48.1               46.9     1.2     47.9
DAYS MAX >= 90    33               14.9    18.1       33
DAYS MAX <= 32    33               32.8     0.2       33
DAYS MIN <= 32   166              170.4    -4.4      185
DAYS MIN <= 0      5                7.8    -2.8        5

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       23.69   1942
 MINIMUM        5.94   1964
TOTALS         14.29              15.41   -1.12    10.03
DAILY AVG.      0.04               0.04   -0.00     0.03
DAYS >= .01       82              101.5   -19.5       81
DAYS >= .10       32               40.2    -8.2       35
DAYS >= .50        5                7.7    -2.7        2
DAYS >= 1.00       4                1.8     2.2        0
GREATEST
 24 HR. TOTAL   2.37   06/08 TO 06/08               0.78  10/25 TO 10/25
 STORM TOTAL    2.37                                0.19
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL         121.5   1980
 24 HR TOTAL    22.7   MM
TOTALS          68.8               62.9     5.9     56.0
SINCE 7/1        8.9               23.2   -14.3       MM
DAYS >= TRACE     75               45.0    30.0       74
DAYS >= 1.0       16               19.5    -3.5       16
GREATEST
 SNOW DEPTH       18   03/14                           9  10/25
 24 HR TOTAL    22.7R                               14.0  10/25 TO 10/25
 STORM TOTAL    22.7                                 2.5
 (MM/DD(HH))            MM

DEGREE DAYS
HEATING TOTAL   6619               6959    -340     6746
 SINCE 7/1      2194               2812    -618       MM
COOLING TOTAL    603                398     205      605
 SINCE 1/1       603                397     206       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.4
HIGHEST WIND SPEED/DIRECTION    53/280    DATE  01/20
HIGHEST GUST SPEED/DIRECTION    89/270    DATE  01/13

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.26
NUMBER OF DAYS FAIR          249
NUMBER OF DAYS PC             84
NUMBER OF DAYS CLOUDY         32

AVERAGE RH (PERCENT)     53

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             42     MIXED PRECIP               0
HEAVY RAIN                8     RAIN                      17
LIGHT RAIN               69     FREEZING RAIN              0
LT FREEZING RAIN          4     HAIL                       2
HEAVY SNOW                5     SNOW                      13
LIGHT SNOW               71     SLEET                      0
FOG                     101     FOG W/VIS <= 1/4 MILE     22
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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