Yellowstone National Park, Wyoming
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -19° -5° -45.6° (1963) 7.8° (2005) 1.91" 31.8"
February -18° -2° -45.6° (1985) 13.3° (1982) 1.49" 25.3"
March -16° -41.1° (1965) 16.1° (2004) 1.73" 27.9"
April -9° -32.2° (1975) 18.3° (1987) 1.48" 16.9"
May -4° 11° -18.9° (1967) 25.6° (2003) 2.06" 8.1"
June 16° -10° (1951) 28.3° (1988) 2.08" 0.8"
July 21° -6.7° (1985) 33.3° (2003) 1.66" 0"
August 21° -8.3° (1976) 32.8° (1969) 1.69" 0"
September -2° 16° -20.6° (1985) 28.3° (1956) 1.59" 1.6"
October -6° -25° (1991) 22.2° (1987) 1.32" 6.6"
November -12° -34.4° (1955) 17.2° (1949) 1.71" 24.8"
December -17° -4° -41.7° (1990) 8.9° (1981) 1.68" 26.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 -15° -2.2° -24° (1991) 7° (1999) 0.06" NA
Dec 2 -15° -2.8° -27° (1991) 6° (1959) 0.06" NA
Dec 3 -15.6° -2.8° -26° (1978) 7° (1975) 0.06" NA
Dec 4 -15.6° -2.8° -31° (1992) 4° (1965) 0.06" NA
Dec 5 -15.6° -2.8° -39° (1972) 5° (1963) 0.06" NA
Dec 6 -16.1° -2.8° -31° (1978) 6° (1965) 0.05" NA
Dec 7 -16.1° -3.3° -29° (1978) 5.6° (2006) 0.05" NA
Dec 8 -16.1° -3.3° -34° (1978) 4° (1965) 0.05" NA
Dec 9 -16.1° -3.3° -36° (1972) 3° (1965) 0.05" NA
Dec 10 -16.7° -3.3° -37° (1972) 9° (1981) 0.05" NA
Dec 11 -16.7° -3.9° -33° (1961) 7° (1990) 0.05" NA
Dec 12 -16.7° -3.9° -33° (1961) 4° (1962) 0.05" NA
Dec 13 -16.7° -3.9° -30° (1967) 3° (2004) 0.05" NA
Dec 14 -17.2° -3.9° -34° (1972) 6° (1998) 0.05" NA
Dec 15 -17.2° -3.9° -34° (1955) 7° (1962) 0.05" NA
Dec 16 -17.2° -3.9° -34° (1972) 6° (1980) 0.05" NA
Dec 17 -17.2° -4.4° -39° (1964) 5° (1962) 0.05" NA
Dec 18 -17.8° -4.4° -34° (1983) 6° (1980) 0.05" NA
Dec 19 -17.8° -4.4° -32° (1984) 7° (1979) 0.05" NA
Dec 20 -17.8° -4.4° -34° (1990) 8° (1979) 0.05" NA
Dec 21 -17.8° -4.4° -41° (1990) 4° (1958) 0.05" NA
Dec 22 -17.8° -4.4° -42° (1990) 3° (1958) 0.05" NA
Dec 23 -18.3° -4.4° -39° (1990) 3° (1955) 0.05" NA
Dec 24 -18.3° -5° -41° (1983) 4° (1963) 0.06" NA
Dec 25 -18.3° -5° -36° (1983) 3° (1950) 0.06" NA
Dec 26 -18.3° -5° -33° (1948) 3° (1980) 0.06" NA
Dec 27 -18.3° -5° -32° (1954) 3° (1980) 0.06" NA
Dec 28 -18.3° -5° -37° (1983) 6° (1980) 0.06" NA
Dec 29 -18.9° -5° -37° (1978) 5° (1980) 0.06" NA
Dec 30 -18.9° -5° -38° (1978) 3° (1980) 0.06" NA
Dec 31 -18.9° -5° -41° (1978) 4° (1980) 0.06" NA
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