Climatological Report (Monthly)
Issued by NWS

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
826
CXUS55 KTFX 010917
CLMHLN


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
317 AM MDT WED NOV 1 2017

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

...THE HELENA MT CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1866 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              87   10/10/2015
                        10/01/2001
                        10/01/1997
 LOW               -8   10/30/1991
HIGHEST            78   10/19        64      14       73  10/09
LOWEST             22   10/31        27      -5       22  10/12
AVG. MAXIMUM     57.5              58.7    -1.2     58.4
AVG. MINIMUM     32.4              32.5    -0.1     37.6
MEAN             44.9              45.6    -0.7     48.0
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.6    -0.6        0
DAYS MIN <= 32     17              13.6     3.4        6
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         2.81   1925
 MINIMUM         0.01   1996
TOTALS           0.44              0.68   -0.24     1.68
DAYS >= .01         7               6.2     0.8
DAYS >= .10         3               2.1     0.9
DAYS >= .50         0               0.2    -0.2
DAYS >= 1.00        0               0.0     0.0
GREATEST
 24 HR. TOTAL    0.14   10/02 TO 10/02

SNOWFALL (INCHES)
RECORDS
 TOTAL           27.7   1925
 24 HR TOTAL     14.0   10/11/1891 TO 10/11/1891
TOTALS            1.2               2.4    -1.2      1.0
SINCE 7/1         1.2               4.0    -2.8
SNOWDEPTH AVG.      0
DAYS >= TRACE       4               1.8     2.2
DAYS >= 1.0         1               0.8     0.2
GREATEST
 SNOW DEPTH         1   10/03
 24 HR TOTAL      1.2   10/02 TO 10/02

DEGREE_DAYS
HEATING TOTAL     616               602      14      519
 SINCE 7/1        886               908     -22      773
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        702               406     296      455
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.7
HIGHEST WIND SPEED/DIRECTION    43/260    DATE  10/22
HIGHEST GUST SPEED/DIRECTION    56/260    DATE  10/22

SKY COVER
AVERAGE SKY COVER           0.30

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                7     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                6     SLEET                      0
FOG                       9     FOG W/VIS <= 1/4 MILE      1
HAZE                      0

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

$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.