WEST YELLOWSTONE, MT

Minimum of Minimum Temperature (Degrees Fahrenheit)

(248857)

File last updated on March 28, 2024
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.

YEAR(S)JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECANN
1924-42.00a-23.00 -30.00 -14.00 11.00 18.00 26.00 25.00 15.00d8.00c-23.00c-59.00c-59.00n
1925-22.00c-22.00d-21.00f9.00b15.00f33.00p29.00 17.00 20.00a-4.00 -11.00b-18.00b-----z
1926-22.00f-24.00d-20.00b-22.00f20.00 21.00b27.00 30.00 -9.00b5.00 -20.00 -49.00g-----z
1927-47.00e-35.00i-29.00f-18.00l12.00c29.00 25.00 24.00a19.00a-5.00a-6.00 -39.00a-----z
1928-23.00g-37.00l-37.00a-21.00d13.00a20.00a32.00b15.00 14.00b13.00b-26.00a-31.00 -----z
1929-49.00i-50.00d-19.00d-5.00c9.00d19.00a25.00a27.00 8.00g2.00c-38.00 -28.00b-----z
1930-57.00a-17.00g-25.00g-4.00d-----z20.00 21.00 28.00 13.00 5.00 -32.00 -29.00e-----z
1931-20.00c-24.00c-31.00j-5.00 14.00o24.00o22.00b20.00 16.00n9.00b-34.00 -36.00 -----z
1932-38.00 -40.00 -40.00a-9.00 18.00 28.00c22.00e21.00 14.00 1.00b-22.00 -45.00 -45.00k
1933-19.00 -66.00 -29.00a-17.00 15.00 24.00b29.00b25.00a18.00 13.00c-16.00b-6.00 -66.00k
1934-24.00 -9.00 -2.00 -1.00 16.00 23.00 26.00 26.00 13.00 16.00 -6.00 -18.00a-24.00a
1935-46.00 -37.00 -21.00 -15.00 7.00 24.00 27.00 22.00 15.00 -6.00 -22.00 -31.00e-46.00e
1936-36.00 -48.00 -30.00h-26.00 14.00a26.00 33.00 24.00 10.00a8.00 -30.00b-25.00c-48.00o
1937-56.00g-43.00h-17.00f-0.00j17.00c19.00a32.00 20.00a15.00a13.00c-5.00d-33.00d-----z
1938-35.00g-26.00f-14.00f-15.00b16.00 24.00 32.00 25.00 21.00 6.00 -35.00 -36.00 -36.00u
1939-25.00 -32.00 -29.00 -0.00 18.00a24.00 26.00 22.00 14.00 14.00a-6.00 -34.00 -34.00b
1940-42.00 -29.00 -29.00 8.00 12.00 22.00 26.00a27.00 24.00 16.00 -29.00 -39.00 -42.00a
1941-32.00a-22.00 -21.00 -12.00 19.00d25.00 33.00 32.00 18.00 -1.00 -24.00 -29.00 -32.00e
1942-48.00 -46.00 -22.00 11.00 16.00 23.00 29.00 26.00 16.00 7.00 -7.00 -27.00 -48.00
1943-58.00 -28.00 -42.00 13.00 12.00 23.00a24.00 24.00 14.00 8.00 -8.00e-29.00 -58.00f
1944-33.00 -30.00a-29.00 4.00 16.00 28.00 27.00 27.00 17.00 14.00 -11.00 -24.00a-33.00b
1945-25.00 -27.00 -19.00 -17.00 19.00 23.00 24.00 24.00 14.00 5.00 -12.00 -38.00 -38.00
1946-25.00 -29.00 -11.00 10.00 16.00 24.00 24.00 24.00 13.00 8.00 -16.00b-36.00 -36.00b
1947-38.00 -36.00 -33.00c2.00l-----z24.00l25.00 22.00 20.00 15.00 -19.00 -23.00 -----z
1948-48.00 -39.00 -----z9.00j15.00a30.00a20.00a27.00 20.00 8.00 -21.00 -39.00 -----z
1949-42.00 -42.00a-15.00a2.00 23.00 25.00 26.00 31.00 20.00 12.00 3.00b-27.00g-42.00k
1950-38.00b-41.00 -26.00 -0.00 12.00 21.00a29.00 28.00 20.00 11.00 -13.00 -25.00 -41.00c
1951-55.00 -52.00 -34.00 6.00 23.00a19.00 26.00 26.00 16.00 -4.00 -24.00a-30.00 -55.00b
1952-30.00 -33.00 -27.00 4.00 22.00 26.00 26.00 29.00 17.00 11.00 -36.00 -31.00c-36.00c
19532.00 -35.00a-25.00a-11.00 13.00 26.00 30.00 29.00 22.00a12.00a-12.00 -23.00 -35.00d
1954-16.00 -18.00 -28.00c5.00 -0.00 24.00 28.00 26.00 18.00 3.00 -17.00 -36.00 -36.00c
1955-28.00 -40.00a-43.00 2.00 20.00 27.00 27.00 29.00 16.00 6.00b-36.00a-41.00c-43.00g
1956-38.00 -52.00 -40.00 -1.00 20.00 28.00 29.00 18.00 18.00 6.00 -30.00 -28.00 -52.00
1957-54.00a-11.00 -20.00 2.00 22.00 28.00 28.00 30.00 20.00 12.00 -27.00 -16.00 -54.00a
1958-28.00 -5.00 -16.00 5.00 21.00 28.00 28.00 26.00 20.00 3.00 -24.00 -13.00 -28.00
1959-44.00 -31.00 -19.00 4.00 16.00 26.00 28.00 28.00 14.00 8.00 -30.00 -22.00 -44.00
1960-40.00a-42.00 -36.00 5.00 20.00 26.00 34.00 23.00 21.00 4.00 -20.00 -33.00 -42.00a
1961-43.00 -23.00 -15.00 2.00 20.00 31.00 32.00 35.00 16.00 -3.00 -30.00a-40.00 -43.00a
1962-55.00 -51.00 -23.00 5.00 20.00 22.00 30.00 23.00 16.00 15.00 -6.00 -43.00 -55.00
1963-60.00a-21.00 -19.00 -3.00 25.00 27.00 29.00 30.00 27.00 7.00 -5.00 -32.00 -60.00a
1964-36.00 -29.00 -24.00 -4.00 14.00 28.00 33.00 25.00 14.00 8.00 -25.00 -52.00 -52.00
1965-24.00 -37.00 -36.00 10.00 17.00a26.00 28.00 22.00 11.00 15.00 -10.00a-17.00 -37.00b
1966-31.00 -24.00 -35.00 -4.00 13.00 24.00 33.00 26.00 22.00 9.00a-6.00 -27.00 -35.00a
1967-26.00 -22.00 -24.00 5.00 9.00 26.00 36.00 34.00 24.00 15.00 -25.00a-35.00 -35.00a
1968-24.00 -11.00 -5.00 1.00 18.00 29.00 30.00 28.00 24.00 10.00 -13.00 -36.00 -36.00
1969-13.00 -13.00 -23.00 17.00 20.00 24.00 29.00 27.00a22.00 -0.00 -16.00 -23.00 -23.00a
1970-41.00 -12.00 -17.00 -11.00 14.00 27.00 30.00 34.00 16.00 -0.00 -18.00 -24.00 -41.00
1971-40.00 -28.00 -32.00 1.00 18.00 27.00 28.00 26.00 14.00 -20.00 -10.00 -35.00 -40.00
1972-39.00 -38.00 -13.00 5.00 12.00 28.00 28.00 31.00 18.00 -5.00 -20.00 -48.00 -48.00
1973-38.00 -27.00 -5.00 -4.00c15.00 21.00 28.00 32.00 23.00 13.00 -6.00 -23.00 -38.00c
1974-37.00 -15.00s-20.00c7.00a18.00 27.00a33.00 28.00 18.00 12.00a-5.00a-29.00 -----z
1975-33.00 -29.00 -12.00 -18.00 16.00 26.00a36.00 28.00a18.00 -0.00 -17.00 -26.00a-33.00c
1976-19.00 -35.00 -28.00a3.00 19.00 26.00a32.00 24.00 20.00 8.00 -16.00p-18.00 -35.00r
1977-35.00 -18.00 -17.00b-7.00a17.00a32.00 32.00 27.00 23.00 13.00c-28.00 -16.00 -35.00g
1978-37.00 -21.00 -13.00 10.00 20.00 26.00 33.00 27.00 11.00 1.00b-14.00n-50.00k-----z
1979-45.00j-20.00g-----z18.00x15.00 21.00 33.00 35.00 19.00 1.00 -27.00a-22.00b-----z
1980-46.00b-----z-15.00j1.00x21.00a28.00 33.00 26.00 19.00 7.00a-8.00b-18.00 -----z
1981-11.00 -44.00b-8.00b1.00 19.00b28.00 26.00 24.00 23.00 8.00 -8.00 -21.00 -44.00f
1982-29.00 -49.00 -11.00 -18.00a5.00a23.00 30.00 28.00 22.00a-2.00 -28.00 -30.00 -49.00c
1983-26.00 -26.00 -17.00 -8.00 15.00 27.00a28.00 34.00 -3.00a15.00a-30.00 -48.00 -48.00c
1984-43.00 -16.00 -18.00 -0.00 12.00d20.00 33.00 31.00 11.00 -3.00a-12.00 -31.00 -43.00e
1985-44.00 -45.00 -30.00 6.00 17.00 26.00 33.00 26.00 3.00 2.00 -15.00m-31.00 -45.00m
1986-16.00 -31.00 4.00 -5.00 19.00 29.00 24.00 34.00 -----z7.00 -25.00a-22.00 -----z
1987-35.00 -19.00 -20.00 6.00 20.00 24.00f30.00 26.00 17.00 5.00 -9.00 -30.00a-35.00g
1988-35.00 -20.00 -20.00 5.00e16.00 26.00 29.00 25.00 19.00a17.00 -21.00 -22.00 -35.00f
1989-30.00a-36.00 -31.00 -1.00i18.00 25.00 35.00 28.00b13.00 11.00g-16.00e-30.00d-----z
1990-23.00a-35.00 -16.00 11.00 12.00 28.00 31.00 29.00 22.00 5.00a-17.00a-46.00e-46.00h
1991-36.00c-----z-----z-----z-----z-----z-----z29.00 19.00 -17.00g-30.00a-28.00 -----z
1992-23.00 -19.00 3.00 11.00 18.00 27.00 33.00 16.00k18.00 8.00 -23.00 -36.00c-36.00n
1993-27.00l-32.00o-21.00 6.00 21.00 24.00a26.00 21.00 12.00 -1.00a-31.00a-19.00h-----z
1994-25.00a-25.00a-12.00 -1.00 26.00 32.00n30.00 28.00 18.00 5.00 -27.00a-21.00a-27.00r
1995-38.00 -26.00 -18.00 5.00 10.00 23.00a28.00 25.00h-----z4.00 -9.00 -25.00a-----z
1996-47.00c-53.00 -18.00 -----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1997-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1998-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1999-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2000-----z-----z-----z-----z-----z-----z38.00v30.00u13.00r20.00x-11.00s-----z-----z
2001-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z2.00w-29.00s-----z
2002-20.00o-29.00k-36.00l7.00q18.00g28.00i35.00g27.00k17.00e5.00e-11.00q-20.00o-----z
2003-9.00m-45.00d-18.00f5.00e12.00k-----z-----z-----z-----z-----z-----z-----z-----z
2004-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2005-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2006-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2007-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2008-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2009-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2010-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2011-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2012-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2013-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
Period of Record Statistics
MEAN-34.45 -31.11 -21.87 -0.69 16.30 25.05 28.83 26.54 16.75 6.24 -18.93 -29.93 -40.94
S.D.12.24 12.62 10.41 9.30 4.63 3.13 3.58 4.14 5.71 6.76 9.82 9.68 9.00
SKEW0.21 -0.29 0.17 -0.70 -0.77 -0.31 -0.17 -0.17 -1.96 -0.89 0.01 -0.42 -0.16
MAX2.00 -5.00 4.00 17.00 26.00 32.00 36.00 35.00 27.00 17.00 3.00 -6.00 -23.00
MIN-60.00 -66.00 -43.00 -26.00 -0.00 18.00 20.00 15.00 -9.00 -20.00 -38.00 -59.00 -60.00
YRS66 64 62 64 67 66 71 70 69 71 69 68 33