Yellowstone National Park, Wyoming
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -3° 23° -50° (1963) 46° (2005) 1.91" 31.8"
February -1° 28° -50° (1985) 56° (1982) 1.49" 25.3"
March 35° -42° (1965) 61° (2004) 1.73" 27.9"
April 15° 42° -26° (1975) 65° (1987) 1.48" 16.9"
May 25° 51° -2° (1967) 78° (2003) 2.06" 8.1"
June 33° 61° 14° (1951) 83° (1988) 2.08" 0.8"
July 37° 70° 20° (1985) 92° (2003) 1.66" 0"
August 36° 70° 17° (1976) 91° (1969) 1.69" 0"
September 29° 60° -5° (1985) 83° (1956) 1.59" 1.6"
October 21° 48° -13° (1991) 72° (1987) 1.32" 6.6"
November 10° 33° -30° (1955) 63° (1949) 1.71" 24.8"
December 25° -43° (1990) 48° (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 20° 46° -1° (1995) 65° (1987) 0.06" NA
May 2 21° 47° 1° (1954) 62° (1966) 0.06" NA
May 3 21° 47° 7° (1974) 66° (1998) 0.06" NA
May 4 21° 47° 5° (1991) 68° (1986) 0.06" NA
May 5 22° 48° -2° (1967) 68° (1986) 0.06" NA
May 6 22° 48° 5° (1986) 68° (1987) 0.06" NA
May 7 22° 48° 1° (1984) 70° (1992) 0.06" NA
May 8 23° 48° 2° (1984) 71° (1987) 0.06" NA
May 9 23° 49° 5° (1986) 71° (1987) 0.06" NA
May 10 23° 49° 10° (2002) 67° (2007) 0.06" NA
May 11 24° 49° 10° (1973) 67° (1987) 0.06" NA
May 12 24° 50° 4° (1986) 71° (1993) 0.07" NA
May 13 24° 50° 9° (1970) 73° (2007) 0.07" NA
May 14 25° 50° 6° (1986) 69° (2001) 0.07" NA
May 15 25° 51° 7° (1974) 71° (1987) 0.07" NA
May 16 25° 51° 12° (1974) 73° (1987) 0.07" NA
May 17 26° 51° 9° (1986) 69° (1970) 0.07" NA
May 18 26° 52° 15° (1986) 70° (2006) 0.07" NA
May 19 26° 52° 11° (2003) 72° (1954) 0.07" NA
May 20 26° 52° 12° (1950) 72° (2007) 0.07" NA
May 21 27° 53° 15° (1986) 70° (2002) 0.07" NA
May 22 27° 53° 8° (1974) 70° (1986) 0.07" NA
May 23 27° 53° 4° (1986) 71° (1956) 0.07" NA
May 24 28° 54° 2° (1986) 71° (1969) 0.07" NA
May 25 28° 54° 4° (1986) 75° (2001) 0.07" NA
May 26 28° 54° 7° (1975) 70° (2003) 0.07" NA
May 27 28° 54° 16° (1973) 72° (1986) 0.07" NA
May 28 29° 55° 18° (1955) 73° (1986) 0.07" NA
May 29 29° 55° 16° (1975) 77° (2003) 0.07" NA
May 30 29° 55° 11° (1982) 78° (2003) 0.07" NA
May 31 29° 56° 17° (1986) 73° (1956) 0.07" NA
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