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
May 1 -6.7° 7.8° -18° (1995) 18° (1987) 0.06" NA
May 2 -6.1° 8.3° -17° (1954) 17° (1966) 0.06" NA
May 3 -6.1° 8.3° -14° (1974) 19° (1998) 0.06" NA
May 4 -6.1° 8.3° -15° (1991) 20° (1986) 0.06" NA
May 5 -5.6° 8.9° -19° (1967) 20° (1986) 0.06" NA
May 6 -5.6° 8.9° -15° (1986) 20° (1987) 0.06" NA
May 7 -5.6° 8.9° -17° (1984) 21° (1992) 0.06" NA
May 8 -5° 8.9° -17° (1984) 22° (1987) 0.06" NA
May 9 -5° 9.4° -15° (1986) 22° (1987) 0.06" NA
May 10 -5° 9.4° -12° (2002) 19.4° (2007) 0.06" NA
May 11 -4.4° 9.4° -12° (1973) 19° (1987) 0.06" NA
May 12 -4.4° 10° -16° (1986) 22° (1993) 0.07" NA
May 13 -4.4° 10° -13° (1970) 22.8° (2007) 0.07" NA
May 14 -3.9° 10° -14° (1986) 21° (2001) 0.07" NA
May 15 -3.9° 10.6° -14° (1974) 22° (1987) 0.07" NA
May 16 -3.9° 10.6° -11° (1974) 23° (1987) 0.07" NA
May 17 -3.3° 10.6° -13° (1986) 21° (1970) 0.07" NA
May 18 -3.3° 11.1° -9° (1986) 21.1° (2006) 0.07" NA
May 19 -3.3° 11.1° -12° (2003) 22° (1954) 0.07" NA
May 20 -3.3° 11.1° -11° (1950) 22.2° (2007) 0.07" NA
May 21 -2.8° 11.7° -9° (1986) 21° (2002) 0.07" NA
May 22 -2.8° 11.7° -13° (1974) 21° (1986) 0.07" NA
May 23 -2.8° 11.7° -16° (1986) 22° (1956) 0.07" NA
May 24 -2.2° 12.2° -17° (1986) 22° (1969) 0.07" NA
May 25 -2.2° 12.2° -16° (1986) 24° (2001) 0.07" NA
May 26 -2.2° 12.2° -14° (1975) 21° (2003) 0.07" NA
May 27 -2.2° 12.2° -9° (1973) 22° (1986) 0.07" NA
May 28 -1.7° 12.8° -8° (1955) 23° (1986) 0.07" NA
May 29 -1.7° 12.8° -9° (1975) 25° (2003) 0.07" NA
May 30 -1.7° 12.8° -12° (1982) 26° (2003) 0.07" NA
May 31 -1.7° 13.3° -8° (1986) 23° (1956) 0.07" NA
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