Climatological Report (Monthly)
Issued by NWS Cheyenne, WY

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
000
CXUS55 KCYS 031353
CLMCYS


Climate Report
NATIONAL WEATHER SERVICE CHEYENNE WY
636 AM MST THU JAN 3 2019

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

...The CHEYENNE WY climate summary for the month of December 2018...

Climate normal period 1981 to 2010
Climate record period 1871 to 2019

Weather         Observed          Normal  Depart  Last Year`s
                 Value   Date(s)  Value   From    Value  Date(s)
                                          Normal
................................................................
Temperature (F)
Record
 High              69   12/05/1939
 Low              -28   12/22/1990
                        12/21/1990
                        12/22/1989
Highest            59   12/17        39      20       61
Lowest                  12/31        17     -18       -2
Avg. Maximum     39.3              38.2     1.1     42.3
Avg. Minimum     19.1              17.3     1.8     17.3
Mean             29.2              27.7     1.5     29.8
Days Max >= 90      0               0.0                0
Days Max <= 32      7               8.7                7
Days Min <= 32     30              28.7               30
Days Min <= 0       1               2.7                1

Precipitation (inches)
Record
 Maximum         2.00   1913
 Minimum         0.01   1996
                        1881
Totals           0.28              0.49   -0.21     0.57
Days >= .01         5               6.2    -1.2       12
Days >= .10         1               1.6    -0.6        3
Days >= .50         0               0.1    -0.1        0
Days >= 1.00        0               0.0     0.0        0
Greatest
 24 Hr. Total    0.12   12/22 to 12/22

Snowfall (inches)
Records
 Total           24.4   MM
Totals            5.0               8.4    -3.4     13.0
Since 7/1        21.1              22.7    -1.6     25.2
Snowdepth Avg.      0
Days >= Trace      10               6.8     3.2       15
Days >= 1.0         2               2.7    -0.7        3
Greatest
 Snow Depth         1   12/23                          4  12/26
                        12/07                             12/25
                        12/06                             12/23
 24 Hr Total      2.5   12/22 to 12/22           12/23 to 12/23

DEGREE_DAYS
HEATING TOTAL    1102              1155     -53     1086
 SINCE 7/1       2844              2903     -59     2599
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        405               348      57      404
.................................................................

Wind (mph)
Average Wind Speed              12.9
Highest Wind Speed/Direction    48/280    Date  12/21
Highest Gust Speed/Direction    63/280    Date  12/21

Sky Cover
Possible Sunshine (Percent)   MM
Average Sky Cover           0.30
Number Of Days Fair           20
Number Of Days PC              8
Number of Days Cloudy          3

Average RH (Percent)     56

Weather Conditions. Number Of Days With
THUNDERSTORM              0     MIXED PRECIP                0
HEAVY RAIN                0     RAIN                        0
LIGHT RAIN                2     FREEZING RAIN               0
LT FREEZING RAIN          0     HAIL                        0
HEAVY SNOW                0     SNOW                        0
LIGHT SNOW                8     SLEET                       0
FOG                      10     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.

$$




USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.