Yellowstone National Park, Wyoming
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -17° -4° -45.6° (1963) 7.8° (2005) 1.65" 34.3"
February -17° -2° -45.6° (1985) 13.3° (1982) 1.68" 30.4"
March -13° -41.1° (1965) 16.1° (2004) 1.8" 25.6"
April -8° -32.2° (1975) 18.3° (1987) 1.78" 21.4"
May -2° 11° -18.9° (1967) 25.6° (2003) 2.47" 8.1"
June 16° -10° (1951) 28.3° (1988) 2.25" 1.3"
July 22° -6.7° (1985) 33.3° (2003) 1.62" 0"
August 22° -8.3° (1976) 32.8° (1969) 1.6" 0.1"
September 16° -20.6° (1985) 28.3° (1956) 1.46" 1.3"
October -5° -25° (1991) 22.2° (1987) 1.18" 9.9"
November -10° -34.4° (1955) 17.2° (1949) 1.85" 30.9"
December -15° -4° -41.7° (1990) 8.9° (1981) 1.63" 30.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 -5° -18° (1995) 18° (1987) 0.07" 0.5"
May 2 -5° -17° (1954) 17° (1966) 0.08" 0.5"
May 3 -5° -14° (1974) 19° (1998) 0.08" 0.5"
May 4 -4° -15° (1991) 20° (1986) 0.08" 0.4"
May 5 -4° -19° (1967) 20° (1986) 0.08" 0.5"
May 6 -4° -15° (1986) 20° (1987) 0.07" 0.5"
May 7 -4° 10° -17° (1984) 21° (1992) 0.08" 0.4"
May 8 -4° 10° -17° (1984) 22° (1987) 0.07" 0.4"
May 9 -3° 10° -15° (1986) 22° (1987) 0.08" 0.4"
May 10 -3° 10° -12° (2002) 19.4° (2007) 0.08" 0.4"
May 11 -3° 10° -12° (1973) 19° (1987) 0.07" 0.4"
May 12 -3° 10° -16° (1986) 22° (1993) 0.08" 0.3"
May 13 -3° 11° -13° (1970) 22.8° (2007) 0.08" 0.3"
May 14 -2° 11° -14° (1986) 21° (2001) 0.07" 0.3"
May 15 -2° 11° -14° (1974) 22° (1987) 0.08" 0.2"
May 16 -2° 11° -11° (1974) 23° (1987) 0.08" 0.3"
May 17 -2° 11° -13° (1986) 21° (1970) 0.07" 0.2"
May 18 -2° 11° -9° (1986) 21.1° (2006) 0.08" 0.2"
May 19 -2° 12° -12° (2003) 22° (1954) 0.08" 0.1"
May 20 -1° 12° -11° (1950) 22.2° (2007) 0.07" 0.2"
May 21 -1° 12° -9° (1986) 21° (2002) 0.08" 0.1"
May 22 -1° 12° -13° (1974) 21° (1986) 0.08" 0.2"
May 23 -1° 12° -16° (1986) 22° (1956) 0.08" 0.1"
May 24 -1° 12° -17° (1986) 22° (1969) 0.08" 0.1"
May 25 -1° 12° -16° (1986) 24° (2001) 0.09" 0.1"
May 26 -1° 13° -14° (1975) 21° (2003) 0.09" 0.1"
May 27 -1° 13° -9° (1973) 22° (1986) 0.09" 0"
May 28 13° -8° (1955) 23° (1986) 0.08" 0.1"
May 29 13° -9° (1975) 25° (2003) 0.09" 0.1"
May 30 13° -12° (1982) 26° (2003) 0.09" 0.1"
May 31 13° -8° (1986) 23° (1956) 0.09" 0.1"
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