ST MARY, MONTANA

Period of Record General Climate Summary - Precipitation

Station:(247292) ST MARY
From Year=1981 To Year=2012
Precipitation Total Snowfall
Mean High Year Low Year 1 Day Max. >=
0.01 in.
>=
0.10 in.
>=
0.50 in.
>=
1.00 in.
Mean High Year
in. in. - in. - in. dd/yyyy
or
yyyymmdd
# Days # Days # Days # Days in. in. -
January 2.00 4.81 1990 0.27 1985 1.92 19/1986 12 6 1 0 19.9 54.0 1990
February 1.70 6.14 1986 0.38 1984 1.87 18/1986 9 5 1 0 18.3 69.0 1986
March 1.79 3.77 1988 0.35 2010 2.40 09/2003 11 6 1 0 17.9 46.5 2002
April 1.93 3.87 1991 0.61 2008 1.76 03/2001 9 6 1 0 13.4 49.0 2009
May 2.95 6.75 1981 0.38 2001 3.17 15/1981 10 6 2 1 4.7 41.0 2002
June 3.58 7.59 2005 1.37 1987 2.36 07/1995 12 7 2 1 0.9 24.0 2002
July 1.82 8.99 1987 0.02 1991 4.88 22/1987 8 4 1 0 0.0 0.0 1981
August 1.65 5.69 1989 0.03 2001 2.42 25/1989 8 4 1 0 0.4 12.0 1992
September 2.00 6.34 1985 0.12 2009 2.54 07/1995 8 5 1 0 1.5 16.0 1985
October 2.17 6.20 1990 0.11 1987 1.82 27/1994 9 5 1 0 7.5 49.0 1984
November 2.44 8.55 1990 0.18 1987 2.08 24/1990 11 6 1 0 16.8 58.0 1990
December 2.07 5.16 1996 0.40 1985 1.13 29/2002 11 6 1 0 18.9 63.0 1996
Annual 26.11 37.59 1995 17.22 2001 4.88 19870722 119 65 13 4 120.3 213.9 1996
Winter 5.77 9.92 1986 2.22 2010 1.92 19860119 32 17 2 0 57.2 113.0 1990
Spring 6.67 9.93 2002 3.49 1992 3.17 19810515 30 18 3 1 36.0 102.5 2002
Summer 7.05 14.62 1989 2.46 1982 4.88 19870722 27 14 4 2 1.3 24.0 2002
Fall 6.61 15.09 1990 1.19 1987 2.54 19950907 29 16 4 1 25.8 69.0 1990
Table updated on Oct 31, 2012
For monthly and annual means, thresholds, and sums:
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered
Seasons are climatological not calendar seasons
Winter = Dec., Jan., and Feb. Spring = Mar., Apr., and May
Summer = Jun., Jul., and Aug. Fall = Sep., Oct., and Nov.


Western Regional Climate Center, wrcc@dri.edu