CHINOOK, MONTANA

Period of Record General Climate Summary - Precipitation

Station:(241722) CHINOOK
From Year=1948 To Year=2006
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 0.57 2.08 1969 0.00 1973 1.10 06/1983 5 2 0 0 7.2 29.3 1971
February 0.38 1.22 1994 0.00 1964 0.51 24/2006 5 1 0 0 5.0 17.5 1994
March 0.53 1.56 1950 0.00 1963 0.60 17/1998 5 2 0 0 5.6 16.0 1996
April 1.08 3.73 1955 0.00 1949 2.11 04/1955 6 3 1 0 1.5 9.0 1975
May 2.05 6.14 1974 0.21 1966 2.36 17/1949 9 5 1 0 0.4 7.0 1982
June 2.42 5.72 1965 0.01 1985 2.95 17/1965 10 6 1 0 0.0 1.0 1950
July 1.61 5.20 1992 0.00 1994 3.15 10/1983 8 4 1 0 0.0 0.0 1948
August 1.21 5.49 1974 0.00 1969 2.50 08/1974 6 3 1 0 0.0 0.0 1948
September 1.18 8.83 1986 0.11 1949 5.50 24/1986 6 3 1 0 0.1 3.0 1951
October 0.65 2.05 1995 0.00 1952 1.10 22/1980 4 2 0 0 0.7 11.0 1991
November 0.45 2.23 1958 0.00 1969 0.61 29/1998 4 2 0 0 3.5 11.3 1970
December 0.50 2.11 1977 0.00 1986 0.96 16/1977 5 2 0 0 5.4 19.5 1989
Annual 12.63 20.52 1986 7.40 1952 5.50 19860924 73 34 6 1 29.4 65.3 1996
Winter 1.45 3.22 1994 0.23 1987 1.10 19830106 15 5 0 0 17.6 48.5 1994
Spring 3.66 8.01 1974 1.02 1976 2.36 19490517 20 10 2 0 7.6 21.0 1996
Summer 5.24 13.00 2002 1.71 1967 3.15 19830710 24 13 3 1 0.0 1.0 1950
Fall 2.28 9.85 1986 0.39 1974 5.50 19860924 15 7 1 0 4.2 17.5 1991
Table updated on Jul 28, 2006
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