West Yellowstone, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -17° -5° -51.1° (1963) 8.3° (1986) 2.16" 29.6"
February -17° -1° -54.4° (1933) 13.3° (1958) 1.8" 28.6"
March -11° -41.7° (1955) 16.1° (1966) 1.78" 22.9"
April -6° -32.2° (1936) 24.4° (1939) 1.77" 12.6"
May -2° 15° -17.8° (1954) 31.1° (1936) 2.45" 3.1"
June 20° -7.8° (1924) 33.9° (1936) 2.31" 0.2"
July 25° -6.7° (1948) 36.1° (1936) 1.77" 0"
August 25° -9.4° (1928) 35.6° (1961) 1.16" 0"
September -1° 19° -22.8° (1926) 32.8° (1950) 1.37" 0.3"
October -6° 10° -28.9° (1971) 28.3° (1934) 1.56" 8.1"
November -12° -38.9° (1929) 17.8° (1962) 2.1" 28"
December -18° -6° -50.6° (1924) 12.2° (1946) 2.67" 36.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 -4° 12° -13° (1929) 23° (1981) 0.07" NA
May 2 -4° 12° -18° (1954) 22° (1966) 0.07" NA
May 3 -4° 12° -14° (1935) 24° (1966) 0.07" NA
May 4 -4° 13° -13° (1935) 26° (1936) 0.07" NA
May 5 -3° 13° -15° (1982) 26° (1966) 0.07" NA
May 6 -3° 13° -11° (1924) 27° (1992) 0.07" NA
May 7 -3° 13° -12° (1924) 26° (1992) 0.08" NA
May 8 -3° 13° -11° (1929) 23° (1987) 0.07" NA
May 9 -3° 14° -12° (1929) 25° (1954) 0.07" NA
May 10 -3° 14° -10° (1931) 26° (1940) 0.07" NA
May 11 -2° 14° -11° (1929) 27° (1960) 0.07" NA
May 12 -2° 14° -11° (1943) 26° (1960) 0.08" NA
May 13 -2° 14° -9° (1933) 27° (1932) 0.07" NA
May 14 -2° 15° -9° (1983) 26° (1936) 0.08" NA
May 15 -2° 15° -9° (1943) 26° (1987) 0.08" NA
May 16 -2° 15° -9° (1929) 27° (1988) 0.07" NA
May 17 -2° 15° -9° (1929) 24° (1948) 0.08" NA
May 18 -1° 15° -9° (1942) 26° (1954) 0.08" NA
May 19 -1° 15° -8° (1929) 28° (1954) 0.08" NA
May 20 -1° 16° -9° (1946) 28° (1958) 0.08" NA
May 21 -1° 16° -7° (1938) 26° (1958) 0.08" NA
May 22 -1° 16° -7° (1938) 27° (1942) 0.09" NA
May 23 -1° 16° -11° (1966) 26° (1979) 0.09" NA
May 24 -1° 16° -7° (1944) 28° (1934) 0.08" NA
May 25 16° -8° (1950) 27° (1969) 0.09" NA
May 26 16° -10° (1935) 29° (1936) 0.09" NA
May 27 17° -8° (1932) 28° (1934) 0.09" NA
May 28 17° -7° (1933) 29° (1934) 0.09" NA
May 29 17° -7° (1933) 29° (1936) 0.09" NA
May 30 17° -6° (1924) 31° (1936) 0.09" NA
May 31 17° -7° (1982) 29° (1986) 0.09" NA
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