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Montana, Liberty

Record Report

Statement as of 11:15 PM EDT on June 30, 2015

...Record Warm Minimum Temperatures For Jun 30 In Southwest
Montana...


location new record old record year set records began
Townsend 63 62 2007 1948


Public Information Statement

Statement as of 11:18 AM MDT on July 01, 2015


... June 2015 and October-June seasonal weather summary for north
central and southwest Montana...

Overall, June was warm and dry across the area. A high pressure ridge
set up over the western US and dominated the weather pattern for the
month. After a relatively wet may, rainfall largely cut off in June.
Temperatures soared into the lower 90s over portions of the area on
the 8th and 9th. After a brief cool period, with low temperatures in
the 30s from the 13th-15th, temperatures returned to record high
levels for the last few days of the month. Wisdsom recorded the
lowest area temperature on the 14th, dropping to 27. Many record high
temperatures were set from the 26th-29th, reaching as high as 104 at
Loma on the 28th. Helena set an all-time warm reading for June
reaching 103 on the 27th. They had 3-consecutive days of 100 or more
from the 27th-29th. The greatest positive departure from normal was
in the Helena valley, where it was 7.5 degrees above normal for the
month. The lowest positive departures were along the international
border north of Havre, with departures around 2 degrees. The warmest
temperature average was 69.6 at Helena, with the coolest 56.4 at West
Yellowstone. Most of the averages were about 3 degrees cooler than
the normal for July temperatures.

At many locations, this ranked as one of the five or six warmest
junes of record. At Helena, it was the warmest of record, exceeding
their old record warmest June set in 1934. At most locations, this
was the warmest June since 1988.
For the water-year, it was the warmest of record at Dillon, exceeding
their old record last set in 1992. Again, at most locations, this
water year's temperature averages rank among the five warmest of
record.

For precipitation, June produced a little precipitation in most
areas. This was the driest since 1985 at most locations, but at Great
Falls, this was the driest of record, exceeding a record last set in
1960. Bozeman had their third driest June of record, while Havre had
their fourth driest of record. The water year is also drier than
normal. Bozeman is experiencing their sixth driest of record. At
Dillon, although this water year is the 29th driest of record, it is
wetter than any of the last four years. Most precipitation fell over
the first few days of the month. The greatest area precipitation
amount was 5.70-inches at Crystal Lake and 3.57-inches at a location
east of Lewistown. In the region, the wettest area was over eastern
Fergus County, but dry over the rest of the region. The driest area
was across northern Hill County.

Winds continued lighter than normal in June. Most areas ranked among
the five calmest junes of record. On average, this was the calmest
June since 2009. For the water-year, this has been the calmest such
period of record at Great Falls. Cut Bank had the highest average
wind speeds, but still the fifth calmest of record. The highest area
gust was 64 mph at Dillon from a thunderstorm on the 29th.

Severe weather occurred on two days in June. This is the lowest
number of days in June since 2009. Wind gusts reached 64 mph at
Dillon on the 29th from thunderstorms.

Average temperature... degrees fahrenheit...
             Jun norm rank Oct-Jun norm rank
Bozeman... ... 64.7..59.1... 2nd warmest 38.8... .36.1... 5th warmest
Cut Bank... ..62.5..57.8... 5th warmest 38.0... .35.8... 2nd warmest
Dillon... ... .64.6..58.1... 2nd warmest 40.7... .36.4... warmest
Great Falls..65.2..59.7... 15th warmest 40.9... .38.3... 23rd warmest
Havre... ... ..66.5..62.2... 15th warmest 38.8... .36.7... 15th warmest
Helena... ... .69.6..62.1... warmest 42.2... .38.7... 2nd warmest
Lewistown... .64.4..58.1... 6th warmest 40.4... .36.7... 4th warmest
W yellowston.56.4..51.8... 5th warmest 31.7... .27.6... 2nd warmest


Precipitation... inches...
              Jun norm Oct-Jun norm
Bozeman... ... .0.60..2.46... 3rd driest 8.49... 10.80... 6th driest
Cut Bank... ... 1.20..2.55... 20th driest 6.90... .7.19... 44th driest
Dillon... ... ..0.71..1.97... 11th driest 6.26... .7.35... 29th driest
Great Falls... 0.44..2.53... driest 9.19... 10.26... 38th driest
Havre... ... ... 0.43..2.19... 4th driest 6.07... .7.33... 21st driest
Helena... ... ..0.50..2.06... 10th driest 6.84... .7.73... 29th driest
Lewistown... ..1.61..3.08... 17th driest 10.61... 11.84... 37th driest
W Yellowstone.1.80..2.17... 36th driest 14.61... 17.35... 24th driest


Average wind speed... mph...
              Jun norm rank Oct-Jun norm rank
Bozeman... ... .5.5... .5.9... 3rd calmest 5.4... . 5.5... 8th calmest
Cut Bank... .. 9.5... 11.6... 5th calmest 12.7... .13.4... 17th calmest
Dillon... ... ..7.1... 7.9... 2nd calmest 9.4... . 9.3... 25th calmest
Great Falls.. 7.7... 10.6... 3rd calmest 11.2... .12.8... calmest
Havre... ... .. 9.0... .9.7... 61st windiest 10.4... .10.2... 26th windiest
Helena... ... . 6.7... .7.6... 5th calmest 6.5... . 6.7... 12th calmest
Lewistown... . 6.7... 8.5... 4th calmest 9.2... . 9.7... 14th calmest
W yellowston. 6.0 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, Lewistown began in 1896, and West
Yellowstone began in 1905. 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, and 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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