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Montana, Fergus

Public Information Statement

Statement as of 11:17 AM MDT on October 01, 2014


... September 2014 and water year 2014 weather summary for north
central and southwest Montana...

General westerly flow aloft brought near normal temperatures to
Montana in September. Precipitation was above normal from the
southwest through Stanford and northeast to Harlem. Over most other
areas, precipitation was below normal. Temperature departures ranged
from 1.6f above normal at Chinook to 1.9f below normal at Gold
Butte. The area's warmest temperature was 98f at Loma on the 25th,
with the coolest 7f at Wisdom on the 12th.

Generally, the first half of the month had cooler-than-normal
temperature, with above normal readings during the second half. The
first frost of the season was recorded at many locations on the 10th
and 11th, with the first seasonal snowfall recorded at this time,
too. Havre had their earliest frost since 1992. The coolest average
temperature was 45.9f at Elk Park, with the warmest 61.3f at Holter
dam.
The water year average temperature was slightly cooler than normal
across the region. The greatest departure, as much as 4f, was over
the hi-line from Sunburst to Kremlin. At Great Falls, iw was the
17th coolest water-year, and the coolest since 2010.

For precipitation, September produced near to below normal rainfall.
The wettest area was from West Yellowstone, northeast to Blaine
County. This area recorded more than two inches of precipitation.
The greatest monthly amount was 3.60 inches at Pike Creek snotel,
and 2.46 inches at Logan.
The water year was wet. At Cut Bank, it was the 13th wettest of
record, as they received nearly five inches more than normal.
Bozeman had their wettest water year since 1996, and Great Falls saw
their wettest water year since 1992.

Winds continued to average below normal across much of the
area. Bozeman recorded their fourth calmest September of record. Of
lower elevation sites, Sweet Grass was the windiest, with an average
speed of 11.8 mph. Of Airport locations, Cut Bank had the strongest
monthly average of 10.3 mph, slightly below the long-term average.
The strongest area gust was 72 mph at Deep Creek RAWS on the 19th,
and 55 mph at Sunburst on the 26th.

For the water-year, Great Falls had their calmest of record. The
previously calmest water-year was in 1997. Otherwise, winds were
close to the long-term average over the water year.

Average temperature... degrees fahrenheit...
             Sep norm rank Oct-Sep norm rank
Bozeman... ... 54.8..55.5... 36th coolest 41.9... .42.8... 35th coolest
Cut Bank... ..54.7..53.9... 38th warmest 40.5... .42.0... 39th coolest
Dillon... ... .56.0..54.9... 26th warmest 42.8... .42.7... 30th warmest
Great Falls..57.0..56.1... 61st warmest 43.2... .44.5... 17th coolest
Havre... ... ..57.0..56.5... 61st warmest 41.9... .43.4... 46th coolest
Helena... ... .58.9..57.8... 27th warmest 45.3... .45.3... 36th warmest
Lewistown... .56.1..54.9... 37th warmest 41.5... .43.0... 29th coolest
W yellowston.48.5..48.0... 35th warmest 34.0... .34.3... 34th coolest

Precipitation... inches...
              Sep norm rank Oct-Sep norm rank
Bozeman... ... .1.30..1.10... 35th wettest 15.32... 14.10... 18th wettest
Cut Bank... ... 1.05..1.22... 43rd wettest 15.65... 10.90... 13th wettest
Dillon... ... ..0.86..0.84... 37th wettest 10.22... 10.50... 31st driest
Great Falls... 0.72..1.42... 37th driest 19.23... 14.75... 15th wettest
Havre... ... ... 0.84..1.12... 65th driest 13.17... 11.20... 58th wettest
Helena... ... ..1.10..1.10... 58th wettest 10.96... 11.22... 63rd driest
Lewistown... ..1.49..1.35... 55th wettest 18.65... 16.85... 45th wettest
W Yellowstone.2.44..1.09... 16th wettest 23.51... 21.32... 19th wettest

Average wind speed... mph...
              Sep norm rank Oct-Sep norm rank
Bozeman... ... .5.0... .5.6... 4th calmest 5.9... . 5.6... 22nd calmest
Cut Bank... ..10.3... 10.7... 19th calmest 12.5... .12.4... 26th calmest
Dillon... ... ..8.6... 8.0... 28th windiest 9.5... . 8.9... 20th windiest
Great Falls.. 9.4... 10.6... 15th calmest 10.7... .12.1... calmest
Havre... ... .. 8.7... .8.8... 51st calmest 10.0... ..9.9... 25th windiest
Helena... ... . 6.0... .6.1... 17th calmest 6.6... . 6.6... 13th calmest
Lewistown... . 7.9... 8.2... 21st calmest 9.3... . 9.3... 24th calmest
W Yellowstone 4.7 M

Temperature and precipitation records for Bozeman began in 1935... Cut
Bank began in 1903... Dillon began in 1939... Great Falls began in 1891
... Havre and Helena began in 1880... and Lewistown began in 1896. Wind
records at Bozeman and Dillon began in 1948... Cut Bank and Lewistown
in 1938... Great Falls in 1939... Havre in 1889... Helena in 1880... West
Yellowstone in 2010. The normal period for all elements is 1981 to 2010.

These data are preliminary and have not undergone final qc by ncdc.
Therefore these data are subject to revision. Final and certified
climate data can be accessed at the National climatic data center
at www.Ncdc.NOAA.Gov


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