Climatological Report (Monthly)
Issued by NWS Glasgow, MT

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CXUS55 KGGW 011933
CLMGGW

CLIMATE REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
120 PM MDT MON OCT 1 2018

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

...THE GLASGOW CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1893 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             103   09/01/1983
 LOW               14   09/25/1928
HIGHEST            89   09/10                         93  09/08
                        09/03
LOWEST             26   09/28                         36  09/26
AVG. MAXIMUM     67.1              71.8    -4.7     71.4
AVG. MINIMUM     44.3              44.6    -0.3     46.4
MEAN             55.7              58.2    -2.5     58.9
DAYS MAX >= 90      0                                  4
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      3                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.72   1938
 MINIMUM         0.00   1899
TOTALS           1.28              0.94    0.34     1.12
DAILY AVG.       0.04              0.03    0.01     0.04
DAYS >= .01        11                                  5
DAYS >= .10         2                                  3
DAYS >= .50         1                                  0
DAYS >= 1.00        0                                  0
GREATEST
 24 HR. TOTAL    0.73   09/20 TO 09/20

SNOWFALL (INCHES)
RECORDS
 TOTAL            4.6   1926
 SNOW DEPTH         2   09/24/1984
TOTALS              T               0.2    -0.2      0.0
 LIQUID EQUIV      MM              0.00      MM     0.00
SINCE 7/1           T               0.2    -0.2      0.0
 LIQUID 7/1        MM              0.00      MM     0.00
SNOWDEPTH AVG.      0                                  0
DAYS >= TRACE       1                                  0
DAYS >= 1.0         0                                  0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL        T   09/30 TO 09/30

DEGREE_DAYS
HEATING TOTAL     297               241      56      226
 SINCE 7/1        340               294      46      233
COOLING TOTAL      25                37     -12       54
 SINCE 1/1        719               532     187      684
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.8
RESULTANT WIND SPEED/DIRECTION   4/075
HIGHEST WIND SPEED/DIRECTION    38/310    DATE  09/25
HIGHEST GUST SPEED/DIRECTION    50/320    DATE  09/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.40
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     61


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

$$

SEPTEMBER WAS SLIGHTLY COOLER AND WETTER THAN NORMAL.

THE MONTH CAN BE BROKEN DOWN INTO TWO DISTINCT WEATHER REGIMES. THE
FIRST HALF OF THE MONTH RESEMBLED MORE SUMMER-LIKE CONDITIONS, WITH
THE SECOND HALF OF THE MONTH TURNING SHARPLY TOWARDS MORE FALL-LIKE
CONDITIONS. THE DAYS LEADING UP TO SEPTEMBER 12 WERE GENERALLY ABOVE
NORMAL WITH REGARDS TO TEMPERATURES, AND THE SUBSEQUENT DAYS
THEREAFTER WERE COLDER THAN NORMAL. ON THE WHOLE, THIS SEPTEMBER WAS
THE COLDEST SINCE 2010.

WITH REGARD TO PRECIPITATION, ALL OF THE MEASURABLE PRECIPITATION
FELL DURING THE LATTER, AND COOLER, HALF OF THE MONTH. THE EVENT
WITH THE GREATEST RAINFALL WAS ON SEPTEMBER 19 AND 20, WHERE 0.96
INCHES OF RAIN FELL AT GLASGOW. THIS WAS THE GREATEST TWO-DAY
RAINFALL FOR GLASGOW SINCE OCTOBER OF 2016.

THE AVERAGE TEMPERATURE FOR THE MONTH WAS 55.7 DEGREES, WHICH WAS
2.5 DEGREES BELOW NORMAL. PRECIPITATION FOR THE MONTH CAME IN AT
1.28 INCHES, WHICH WAS 0.34 INCHES ABOVE NORMAL. FOR WIND SPEEDS,
THERE WERE 8 DAYS IN WHICH THE MAXIMUM WIND GUST WAS 30 MPH OR
GREATER.

LOOKING AHEAD TO OCTOBER, NORMAL TEMPERATURES START OUT WITH A HIGH
OF 64 AND FALL TO 49 BY THE END OF THE MONTH. NORMAL LOWS START AT
38 DEGREES AND FALL TO 26 DEGREES BY THE END OF THE MONTH. NORMAL
PRECIPITATION FOR OCTOBER IS 0.75 INCHES, WITH A NORMAL SNOWFALL
AMOUNT OF 1.3 INCHES.

$$

BIGELBACH/JAMBA


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