LEWISTON AP, ID

Total of Snowfall (Inches)

(105241)

File last updated on March 29, 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)JULAUGSEPOCTNOVDECJANFEBMARAPRMAYJUNANN
1947-48-----z-----z-----z-----z-----z-----z2.40 1.40 0.50 0.00 0.00 0.00 4.30f
1948-490.00 0.00 0.00 0.00 1.60 10.90 6.20 7.60 0.40 0.00 0.00 0.00 26.70
1949-500.00 0.00 0.00 0.00 0.00 6.60 22.90 0.60 2.90 0.30 0.00 0.00 33.30
1950-510.00 0.00 0.00 0.00 0.30 1.20 0.80 0.60 3.90 0.00 0.00 0.00 6.80
1951-520.00 0.00 0.00 0.00 0.00 7.20 4.60 2.60 0.60 0.00 0.00 0.00 15.00
1952-530.00 0.00 0.00 0.00 0.00 1.20 0.90 0.00 0.40 0.10 0.00 0.00 2.60
1953-540.00 0.00 0.00 0.00 0.00 0.10 6.50 0.00 0.00 0.00 0.00 0.00 6.60
1954-550.00 0.00 0.00 0.00 0.00 1.00 3.60 7.10 9.70 0.00 0.00 0.00 21.40
1955-560.00 0.00 0.00 0.00 11.10 9.10 10.30 14.90 4.40 0.00 0.00 0.00 49.80
1956-570.00 0.00 0.00 0.00 0.00 0.50 26.10 8.10 0.00 0.00 0.00 0.00 34.70
1957-580.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1.50 0.00 0.00 0.00 1.50
1958-590.00 0.00 0.00 0.00 3.00 0.80 3.20 1.50 0.00 0.00 0.00 0.00 8.50
1959-600.00 0.00 0.00 0.00 0.30 5.20 11.50 1.00 5.20 0.00 0.00 0.00 23.20
1960-610.00 0.00 0.00 0.00 0.00 2.40 2.90 0.20 3.00 0.70 0.00 0.00 9.20
1961-620.00 0.00 0.00 0.00 14.40 7.20 4.00 0.30 2.30 0.00 0.00 0.00 28.20
1962-630.00 0.00 0.00 0.00 0.00 0.00 7.80 1.30 0.30 0.00 0.00 0.00 9.40
1963-640.00 0.00 0.00 0.00 0.00 7.20 5.10 2.10 4.10 0.00 0.00 0.00 18.50
1964-650.00 0.00 0.00 0.00 4.60 16.20 10.80 1.00 1.80 0.00 0.00 0.00 34.40
1965-660.00 0.00 0.00 0.00 0.00 0.90 16.70 4.00 2.00 0.00 0.00 0.00 23.60
1966-670.00 0.00 0.00 0.00 0.30 0.10 1.30 1.00 0.30 0.00 0.00 0.00 3.00
1967-680.00 0.00 0.00 0.00 0.80 8.80 2.70 0.00 0.00 0.00 0.00 0.00 12.30
1968-690.00 0.00 0.00 0.00 0.00 18.70 22.90 3.70 0.00 0.00 0.00 0.00 45.30
1969-700.00 0.00 0.00 0.00 0.00 5.50 8.20 0.30 3.50 0.00 0.00 0.00 17.50
1970-710.00 0.00 0.00 0.00 1.20 0.40 7.30 1.20 2.40 0.00 0.00 0.00 12.50
1971-720.00 0.00 0.00 2.50 0.00 5.90 6.00 2.60 0.00 1.10 0.00 0.00 18.10
1972-730.00 0.00 0.00 0.00 0.00 3.70 3.60 4.50 0.00 0.00 0.00 0.00 11.80
1973-740.00 0.00 0.00 0.90 3.20 6.60 5.30 0.00 0.20 0.00 0.00 0.00 16.20
1974-750.00 0.00 0.00 0.00 0.00 0.40 5.00 11.30 0.00 0.00 0.00 0.00 16.70
1975-760.00 0.00 0.00 0.00 1.10 1.40 2.30 0.00 0.40 0.30 0.00 0.00 5.50
1976-770.00 0.00 0.00 0.00 0.20 0.10 3.50 0.20 2.00 0.00 0.00 0.00 6.00
1977-780.00 0.00 0.00 0.00 9.30 9.00 3.70 1.20 0.60 0.00 0.00 0.00 23.80
1978-790.00 0.00 0.00 0.00 5.20 3.10 11.60 0.10 0.00 0.10 0.00 0.00 20.10
1979-800.00 0.00 0.00 0.00 1.60 0.00 15.50 2.00 2.40 0.00 0.00 0.00 21.50
1980-810.00 0.00 0.00 0.00 1.90 2.30 0.00 3.20 0.00 0.00 0.00 0.00 7.40
1981-820.00 0.00 0.00 0.00 0.00 5.10 8.70 2.20 0.00 0.00 0.00 0.00 16.00
1982-830.00 0.00 0.00 0.00 0.00 2.50 0.00 0.00 0.00 0.00 0.00 0.00 2.50
1983-840.00 0.00 0.00 0.00 0.00 12.10 0.50 0.00 0.00 0.00 0.00 0.00 12.60
1984-850.00 0.00 0.00 0.00 0.80 10.00 3.90 13.90 1.10 0.00 0.00 0.00 29.70
1985-860.00 0.00 0.00 0.00 6.20 3.00 0.80 3.00 0.00 0.00 0.00 0.00 13.00
1986-870.00 0.00 0.00 0.00 1.60 0.00 2.30 0.00 0.00 0.00 0.00 0.00 3.90
1987-880.00 0.00 0.00 0.00 0.00 1.20 3.50 0.00 0.00 0.00 0.00 0.00 4.70
1988-890.00 0.00 0.00 0.00 7.30 4.50 4.80 5.20 6.70 0.00 0.00 0.00 28.50
1989-900.00 0.00 0.00 0.00 0.00 2.00 0.00 1.40 0.00 0.00 0.00 0.00 3.40
1990-910.00 0.00 0.00 0.00 0.00 5.70 0.00 0.00 2.00 0.00 0.00 0.00 7.70
1991-920.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
1992-930.00 0.00 0.00 0.00 3.50 2.80 11.00 5.10 0.80 0.00 0.00 0.00 23.20
1993-940.00 0.00 0.00 0.00 3.10 0.00 0.00 3.70 0.00 0.00 0.00 0.00 6.80
1994-950.00 0.00 0.00 0.00 1.00 3.40c2.20 1.80 0.00d0.00 0.00 0.00 8.40
1995-960.00f0.00 0.00 0.00a0.00 0.00d0.00 -----z-----z-----z-----z-----z0.00f
1996-97-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z0.00l
1997-98-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z0.00l
1998-99-----z0.00 0.00 -----z-----z-----z-----z-----z-----z-----z-----z-----z0.00j
1999-00-----z-----z-----z-----z-----z-----z-----z0.00w0.00s0.00o0.00o0.00k0.00l
2000-010.00k0.00k0.00s0.00l0.00q-----z0.00y-----z0.00w0.00t0.00k0.00e0.00k
2001-020.00h0.00d0.00f0.00j0.00h0.00v0.00v0.00s-----z0.00u-----z0.00y0.00k
2002-030.00w0.00t0.00u0.00s-----z-----z-----z-----z-----z-----z-----z-----z0.00l
2003-040.00t-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z0.00l
2004-05-----z-----z-----z-----z0.00b0.10a2.30 0.00 0.00a0.00b0.00 0.00a2.40d
2005-060.00 0.00 0.00 0.00 0.00a3.80 0.00 0.10 0.20 0.00 0.00 0.00 4.10
2006-070.00 0.00 0.00 0.00 2.50 0.10 1.40 2.60 0.00 0.00 0.00 0.00 6.60
2007-080.00 0.00 0.00 0.00 3.30 3.20 7.00 0.00 0.00 0.00 0.00 0.00 13.50
2008-090.00 0.00 0.00 0.00 0.00 12.60 3.00 0.00 1.70 0.00 0.00 0.00 17.30
2009-100.00 0.00 0.00 0.00 0.00 2.60 0.00 0.00 0.00 0.00 0.00 0.00 2.60
2010-110.00 0.00 0.00 0.00 6.70 4.70 0.10 7.70 0.40 0.00 0.00 0.00 19.60
2011-120.00 0.00 0.00 0.00 1.00 0.50 12.00 0.00 0.00 0.00 0.00 0.00 13.50
2012-130.00 0.00 0.00 0.00 0.00 0.30 2.30 0.00 0.00 0.00 0.00 0.00 2.60
2013-140.00 0.00 0.00 0.00 0.00 2.50 0.00 13.40 0.60 0.00 0.00 0.00 16.50
2014-150.00 0.00 0.00 0.00 0.00 0.00 1.50 0.00 0.00 0.00 0.00 0.00 1.50
2015-160.00 0.00 0.00 0.00 0.00 5.70 0.50 0.20 0.00 0.00 0.00 0.00 6.40
2016-170.00 0.00 0.00 0.00 0.00 19.70 6.70 8.00 4.80 0.00 0.00 0.00 39.20
2017-180.00 0.00 0.00 0.00 0.00 13.00 0.00 1.10 0.00 0.00 0.00 0.00 14.10
2018-190.00 0.00 0.00 0.00 0.00 0.50 0.00 31.30 1.70 0.00 0.00 0.00 33.50
2019-200.00 0.00 0.00 0.00a0.80 0.90 9.30 0.50 3.50 0.00 0.00 0.00 15.00
2020-210.00 0.00 0.00 0.00 2.80 0.50 0.20 10.80 0.00 0.00 0.00 0.00 14.30
2021-220.00 0.00 0.00 0.00 0.00 11.20a3.80 2.30 0.00 0.60 0.00 0.00 17.90
2022-230.00 0.00 0.00 0.00 4.20 5.00 0.00 1.50 1.20 0.00 0.00 0.00 11.90
2023-240.00 0.00 0.00 0.00 0.00 0.50b12.30 0.50b0.00c-----z-----z-----z13.30c
Period of Record Statistics
MEAN0.00 0.00 0.00 0.05 1.54 4.17 5.00 2.97 1.17 0.05 0.00 0.00 15.41
S.D.0.00 0.00 0.00 0.32 2.84 4.72 5.80 5.06 1.87 0.18 0.00 0.00 11.17
SKEW0.00 0.00 0.00 6.93 2.53 1.44 1.74 3.23 2.22 4.38 0.00 0.00 0.96
MAX0.00 0.00 0.00 2.50 14.40 19.70 26.10 31.30 9.70 1.10 0.00 0.00 49.80
MIN0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
YRS66 69 68 67 68 68 69 68 68 67 67 68 65