955
CXUS55 KCYS 011628
CLMCYS

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1028 AM MDT THU OCT 01 2026

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...THE CHEYENNE WYOMING AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1871 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             97   09/07/2022
                       09/07/2022
 LOW               8   09/30/1985
HIGHEST           88   09/04         71      17       86
LOWEST            41   09/21         44      -3       39
AVG. MAXIMUM    77.2               73.3     3.9     74.4
AVG. MINIMUM    51.6               45.8     5.8     47.8
MEAN            64.4               59.6     4.8     61.1
DAYS MAX >= 90     0                0.6    -0.6        0
DAYS MAX <= 32     0                0.1    -0.1        0
DAYS MIN <= 32     0                1.2    -1.2        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        6.95   2013
TOTALS          0.56               1.47   -0.91
DAYS >= .01        9                7.3     1.7       12
DAYS >= .10        3                3.5    -0.5        4
DAYS >= .50        0                1.1    -1.1        1
DAYS >= 1.00       0                0.2    -0.2        0
GREATEST
 24 HR. TOTAL   0.16   09/18 TO 09/18               0.96  09/22 TO 09/23

SNOWFALL (INCHES)
RECORDS
 TOTAL          11.8   MM
 24 HR TOTAL    10.1   09/23/2000 TO 09/24/2000
TOTALS           0.0                1.0    -1.0      0.0
SINCE 7/1        0.0                1.0    -1.0       MM
DAYS >= 1.0        0                0.3    -0.3        0
GREATEST
 SNOW DEPTH        0                                   0
 24 HR TOTAL      MM                                 0.0

DEGREE DAYS
HEATING TOTAL     76                196    -120
 SINCE 7/1        83                246    -163
COOLING TOTAL     66                 32      34
 SINCE 1/1       615                397     218
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.9
HIGHEST WIND SPEED/DIRECTION    31/280    DATE  09/11
                                31/190          09/13
HIGHEST GUST SPEED/DIRECTION    55/250    DATE  09/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.24
NUMBER OF DAYS FAIR           23
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY          0

AVERAGE RH (PERCENT)     53

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             10     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       3
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       5     FOG W/VIS <= 1/4 MILE      0
HAZE                      1

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

$$