Climatological Report (Monthly)
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201
CXUS55 KCYS 031353
CLMAIA


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

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

...The ALLIANCE NE AIRPORT climate summary for the month of December 2018...

Climate normal period 1981 to 2010
Climate record period 1896 to 2019

Weather         Observed          Normal  Depart  Last Year`s
                 Value   Date(s)  Value   From    Value
                                          Normal
.............................................................
Temperature (F)
Record
 High              72   12/01/1998
                        12/06/1939
 Low              -42   12/22/1989
Highest            54   12/21        MM      MM       65
Lowest             -3   12/07        MM      MM      -21
Avg. Maximum     36.3              38.6    -2.3     37.7
Avg. Minimum     12.5               8.6     3.9      6.5
Mean             24.4              23.6     0.8     22.1
Days Max >= 90      0               0.0                0
Days Max <= 32      9               8.4               11
Days Min <= 32     29              31.0               31
Days Min <= 0       3               6.5               10

Precipitation (inches)
Record
 Maximum         1.46   1978
 Minimum         0.00   1993
                        1992
                        1991
Totals           0.18              0.32   -0.14        T
Days >= .01         3                MM      MM        0
Days >= .10         1                MM      MM        0
Days >= .50         0                MM      MM        0
Days >= 1.00        0                MM      MM        0
Greatest
 24 Hr. Total    0.14   12/01 to 12/01

DEGREE_DAYS
HEATING TOTAL    1062              1283    -221     1321
 SINCE 7/1       2894              3082    -188     2942
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        566               564       2      553
..............................................................

Wind (mph)
Average Wind Speed              10.4
Highest Wind Speed/Direction    35/360    Date  12/31
Highest Gust Speed/Direction    45/330    Date  12/19

Sky Cover
Possible Sunshine (Percent)   MM
Average Sky Cover           0.30
Number Of Days Fair           20
Number Of Days PC              5
Number of Days Cloudy          6

Average RH (Percent)     74

Weather Conditions. Number Of Days With
THUNDERSTORM              0     MIXED PRECIP                0
HEAVY RAIN                0     RAIN                        0
LIGHT RAIN                1     FREEZING RAIN               0
LT FREEZING RAIN          0     HAIL                        0
HEAVY SNOW                0     SNOW                        1
LIGHT SNOW               11     SLEET                       0
FOG                      14     FOG W/VIS <= 1/4 MILE       2
HAZE                      2

-  Indicates negative numbers.
R  Indicates record was set or tied.
MM Indicates data is missing.
T  Indicates Trace Amount.

$$




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