Climatological Report (Monthly)
Issued by NWS

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000
CXUS55 KCYS 091829
CLMAIA


Climate Report
NATIONAL WEATHER SERVICE CHEYENNE WY
1125 AM MST TUE JAN 9 2018

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

...The ALLIANCE NE AIRPORT climate summary for the month of December 2017...

Climate normal period 1981 to 2010
Climate record period 1896 to 2018

Weather         Observed          Normal  Depart  Last Year`s
                 Value   Date(s)  Value   From    Value
                                          Normal
.............................................................
Temperature (F)
Record
 High              72   12/06/1939
 Low              -42   12/22/1989
Highest            65   12/20        MM      MM       50
                        12/12
Lowest            -21   12/26        MM      MM      -28
Avg. Maximum     37.7              38.6    -0.9     35.3
Avg. Minimum      6.5               8.6    -2.1      3.0
Mean             22.1              23.6    -1.5     19.1
Days Max >= 90      0               0.0                0
Days Max <= 32     11               8.4                9
Days Min <= 32     31              31.0               28
Days Min <= 0      10               6.5               10

Precipitation (inches)
Record
 Maximum         1.46   1978
 Minimum         0.00   1993
                        1992
                        1991
Totals              T              0.32   -0.32     0.56
Days >= .01         0                MM      MM        2
Days >= .10         0                MM      MM        2
Days >= .50         0                MM      MM        0
Days >= 1.00        0                MM      MM        0
Greatest
 24 Hr. Total       T   12/31 to 12/31

DEGREE_DAYS
HEATING TOTAL    1321              1283      38     1278
 SINCE 7/1       2942              3082    -140     2608
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        553               564     -11      588
..............................................................

Wind (mph)
Average Wind Speed              11.2
Highest Wind Speed/Direction    40/320    Date  12/04
Highest Gust Speed/Direction    49/320    Date  12/06

Sky Cover
Possible Sunshine (Percent)   MM
Average Sky Cover           0.30
Number Of Days Fair           18
Number Of Days PC              8
Number of Days Cloudy          5

Average RH (Percent)     69

Weather Conditions. Number Of Days With
Thunderstorm              0     Mixed Precip               0
Heavy Rain                0     Rain                       0
Light Rain                0     Freezing Rain              0
Lt Freezing Rain          0     Hail                       0
Heavy Snow                0     Snow                       2
Light Snow               11     Sleet                      0
Fog                      14     Fog w/vis <= 1/4 mile      3
Haze                      5

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

$$


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