Climatological Report (Monthly)
Issued by NWS Billings, MT

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000
CXUS55 KBYZ 011116
CLMSHR


CLIMATE REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
506 AM MDT SUN OCT 1 2017

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

...THE SHERIDAN WY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1907 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            95   09/12
LOWEST             32   09/26
                        09/17
AVG. MAXIMUM     72.4              74.2    -1.8
AVG. MINIMUM     42.1              41.6     0.5
MEAN             57.2              57.9    -0.7
DAYS MAX >= 90      5
DAYS MAX <= 32      0
DAYS MIN <= 32      2
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
TOTALS           1.89              1.43    0.46
DAYS >= .01         8
DAYS >= .10         5
DAYS >= .50         1
DAYS >= 1.00        0
GREATEST
 24 HR. TOTAL    0.80   09/15 TO 09/15

DEGREE_DAYS
HEATING TOTAL     276               241      35
 SINCE 7/1        300               303      -3
COOLING TOTAL      52                28      24
 SINCE 1/1        481               418      63
.................................................

WIND (MPH)
AVERAGE WIND SPEED              5.3
HIGHEST WIND SPEED/DIRECTION    33/240    DATE  09/20
HIGHEST GUST SPEED/DIRECTION    43/240    DATE  09/20

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       4
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       8     FOG W/VIS <= 1/4 MILE      0
HAZE                      4

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

&&

...SEPTEMBER 2017 MONTH IN REVIEW FOR SHERIDAN...

BELOW IS A SUMMARY OF THE TEMPERATURE AND PRECIPITATION
STATISTICS FOR SHERIDAN FOR SEPTEMBER 2017. ALL TEMPERATURES ARE IN
DEGREES FAHRENHEIT AND ALL PRECIPITATION AMOUNTS ARE IN INCHES. NORMALS
ARE 30 YEAR AVERAGES CALCULATED FROM 1981 TO 2010. MONTHLY RANKINGS
FOR PRECIPITATION...SNOWFALL...AND TEMPERATURES USE A PERIOD
OF RECORD THAT STARTED IN MAY 1934 AT OR NEAR THE SHERIDAN AIRPORT.

NUMBERS DENOTED WITH AN * IS MISSING DATA IN THE CALCULATION.

...SHERIDAN MONTHLY PRECIPITATION...

 MONTH   2017 VALUES  NORMALS    DEPARTURE  RANKING

SEPTEMBER    1.89     1.43       +0.46      TIED FOR THE 29TH WETTEST OUT OF 111 YEARS
                                            (RECORD WETTEST WAS 8.18 IN 1923)
                                            (WETTEST SINCE 3.71 IN 2016)

...SHERIDAN SEPTEMBER 2017 BROKEN OR TIED DAILY PRECIPITATION RECORDS...

NONE

...SHERIDAN AVERAGE TEMPERATURES...

 MONTH   2017 VALUES  NORMALS   DEPARTURE  RANKING

SEPTEMBER    57.3      57.9      -0.6      TIED FOR THE 45TH COLDEST OUT OF 111 YEARS
                                           (RECORD COLDEST WAS 47.4 IN 1965)
                                           (COLDEST SINCE 54.9 IN 2008)

...SHERIDAN AVERAGE HIGH TEMPERATURES...

 MONTH   2017 VALUES  NORMALS   DEPARTURE  RANKING

SEPTEMBER    72.4      74.2      -1.8      TIED FOR THE 38TH COLDEST OUT OF 111 YEARS
                                           (RECORD COLDEST WAS 59.3 IN 1965)
                                           (COLDEST SINCE 71.4 IN 2008)

...SHERIDAN SEPTEMBER 2017 BROKEN OR TIED WARMEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...SHERIDAN SEPTEMBER 2017 BROKEN OR TIED COLDEST DAILY HIGH TEMPERATURE RECORDS...

NONE

...SHERIDAN AVERAGE LOW TEMPERATURES...

 MONTH   2017 VALUES  NORMALS   DEPARTURE  RANKING

SEPTEMBER    42.1      41.6      +0.5      TIED FOR THE 54TH COLDEST OUT OF 111 YEARS
                                           (RECORD COLDEST WAS 35.4 IN 1965)
                                           (COLDEST SINCE 42.0 IN 2014)

...SHERIDAN SEPTEMBER 2017 BROKEN OR TIED WARMEST DAILY LOW TEMPERATURE RECORDS...

NONE

...SHERIDAN SEPTEMBER 2017 BROKEN OR TIED COLDEST DAILY LOW TEMPERATURE RECORDS...

NONE

$$





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