Climatological Report (Monthly)
Issued by NWS Cheyenne, WY

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CXUS55 KCYS 211757
CLMCYS


Climate Report
NATIONAL WEATHER SERVICE CHEYENNE WY
1156 AM MDT WED JUN 21 2017

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

...The CHEYENNE WY climate summary for the month of May 2017...

Climate normal period 1981 to 2010
Climate record period 1871 to 2017

Weather         Observed          Normal  Depart  Last Year`s
                 Value   Date(s)  Value   From    Value  Date(s)
                                          Normal
................................................................
Temperature (F)
Record
 High              91   05/29/2003
                        05/29/2000
 Low                8   05/03/1907
Highest            81   05/06        65      16       78
Lowest             30   05/20        39      -9       25
                        05/19
                        05/18
Avg. Maximum     62.6              64.7    -2.1     61.6
Avg. Minimum     38.9              40.2    -1.3     38.3
Mean             50.8              52.4    -1.6     50.0
Days Max >= 90      0               0.0                0
Days Max <= 32      0               0.0                0
Days Min <= 32      5               3.3                4
Days Min <= 0       0               0.0                0

Precipitation (inches)
Record
 Maximum         6.66   1904
 Minimum         0.03   2011
Totals           3.87              2.34    1.53     2.03
Days >= .01        18              12.4     5.6       13
Days >= .10         8               5.7     2.3        4
Days >= .50         1               1.4    -0.4        1
Days >= 1.00        1               0.3     0.7        0
Greatest
 24 Hr. Total    1.69   05/17 to 05/18

Snowfall (inches)
Records
 Total           30.4   MM
Totals           14.7               2.3    12.4      1.6
Since 7/1        55.0              60.3    -5.3     91.7
Snowdepth Avg.      0
Days >= Trace       4               1.8     2.2        4
Days >= 1.0         2               0.7     1.3        1
Greatest
 Snow Depth         8   05/19                          1  05/01
 24 Hr Total     11.6   05/18 to 05/19           05/16 to 05/17
                                                          05/17 to 05/17
                                                          05/17 to 05/17

DEGREE_DAYS
HEATING TOTAL     434               392      42      461
 SINCE 7/1       6189              6977    -788     6467
COOLING TOTAL       0                 3      -3        0
 SINCE 1/1          0                 3      -3        0
........................................................

Wind (mph)
Average Wind Speed              10.8
Highest Wind Speed/Direction    54/200    Date  05/07
Highest Gust Speed/Direction    68/180    Date  05/07

Sky Cover
Possible Sunshine (Percent)   MM
Average Sky Cover           0.40
Number Of Days Fair           13
Number Of Days PC             13
Number of Days Cloudy          5

Average RH (Percent)     63

Weather Conditions. Number Of Days With
Thunderstorm              0     Mixed Precip               0
Heavy Rain                3     Rain                       7
Light Rain               19     Freezing Rain              0
Lt Freezing Rain          0     Hail                       1
Heavy Snow                1     Snow                       2
Light Snow                3     Sleet                      2
Fog                      14     Fog w/vis <= 1/4 mile      5
Haze                      1

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

$$


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