West Yellowstone, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -17° -4° -51.1° (1963) 8.3° (1986) 1.96" 29.6"
February -16° -1° -54.4° (1933) 13.3° (1958) 1.77" 28.6"
March -11° -41.7° (1955) 16.1° (1966) 1.82" 22.9"
April -6° -32.2° (1936) 24.4° (1939) 1.51" 12.6"
May -2° 14° -17.8° (1954) 31.1° (1936) 2.19" 3.1"
June 21° -7.8° (1924) 33.9° (1936) 2.21" 0.2"
July 26° -6.7° (1948) 36.1° (1936) 1.84" 0"
August 25° -9.4° (1928) 35.6° (1961) 1.36" 0"
September -1° 19° -22.8° (1926) 32.8° (1950) 1.47" 0.3"
October -6° 11° -28.9° (1971) 28.3° (1934) 1.3" 8.1"
November -12° -38.9° (1929) 17.8° (1962) 2.01" 28"
December -17° -4° -50.6° (1924) 12.2° (1946) 2.3" 36.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 1.1° 22.2° -8° (1930) 32° (1950) 0.05" NA
Sep 2 1.1° 21.7° -7° (1924) 32° (1950) 0.05" NA
Sep 3 1.1° 21.7° -7° (1924) 33° (1950) 0.05" NA
Sep 4 0.6° 21.1° -10° (1929) 33° (1950) 0.05" NA
Sep 5 0.6° 21.1° -5° (1994) 32° (1950) 0.05" NA
Sep 6 0.6° 20.6° -7° (1943) 29° (1950) 0.05" NA
Sep 7 0.6° 20.6° -13° (1929) 29° (1950) 0.05" NA
Sep 8 20.6° -13° (1929) 29° (1981) 0.05" NA
Sep 9 20° -11° (1929) 28° (1966) 0.05" NA
Sep 10 20° -7° (1946) 28° (1959) 0.05" NA
Sep 11 -0.6° 19.4° -9° (1929) 29° (1943) 0.05" NA
Sep 12 -0.6° 19.4° -11° (1989) 29° (1953) 0.05" NA
Sep 13 -0.6° 18.9° -9° (1989) 29° (1943) 0.05" NA
Sep 14 -1.1° 18.9° -9° (1961) 30° (1990) 0.05" NA
Sep 15 -1.1° 18.9° -11° (1936) 29° (1990) 0.05" NA
Sep 16 -1.1° 18.3° -12° (1936) 28° (1981) 0.05" NA
Sep 17 -1.1° 18.3° -10° (1965) 29° (1981) 0.05" NA
Sep 18 -1.7° 17.8° -12° (1965) 29° (1981) 0.05" NA
Sep 19 -1.7° 17.8° -12° (1978) 29° (1956) 0.05" NA
Sep 20 -1.7° 17.8° -19° (1983) 28° (1939) 0.05" NA
Sep 21 -2.2° 17.2° -10° (1928) 28° (1936) 0.05" NA
Sep 22 -2.2° 17.2° -10° (1932) 29° (1987) 0.05" NA
Sep 23 -2.2° 16.7° -11° (1993) 29° (1987) 0.05" NA
Sep 24 -2.2° 16.7° -23° (1926) 28° (1987) 0.05" NA
Sep 25 -2.8° 16.7° -21° (1926) 27° (1952) 0.05" NA
Sep 26 -2.8° 16.1° -13° (1926) 27° (1952) 0.05" NA
Sep 27 -2.8° 16.1° -12° (1926) 27° (1938) 0.05" NA
Sep 28 -2.8° 15.6° -12° (1984) 27° (1938) 0.04" NA
Sep 29 -2.8° 15.6° -16° (1985) 27° (1957) 0.04" NA
Sep 30 -3.3° 15.6° -16° (1985) 26° (1963) 0.04" NA
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