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
Sep 1 33° 66° 23° (1952) 80° (1991) 0.06" NA
Sep 2 32° 66° 20° (1974) 78° (1948) 0.06" NA
Sep 3 32° 65° 19° (1975) 80° (1998) 0.06" NA
Sep 4 32° 65° 21° (1975) 83° (1950) 0.06" NA
Sep 5 31° 64° 22° (1975) 81° (2001) 0.06" NA
Sep 6 31° 64° 22° (1993) 80° (1950) 0.06" NA
Sep 7 31° 63° 16° (1992) 77° (1988) 0.06" NA
Sep 8 31° 63° 20° (1962) 77° (1979) 0.06" NA
Sep 9 30° 63° 16° (1962) 76° (1969) 0.06" NA
Sep 10 30° 62° 23° (1983) 75° (1981) 0.05" NA
Sep 11 30° 62° 19° (1989) 77° (1996) 0.05" NA
Sep 12 29° 62° 19° (1979) 77° (1990) 0.05" NA
Sep 13 29° 61° 18° (1974) 76° (1969) 0.05" NA
Sep 14 29° 61° 16° (1952) 79° (1948) 0.05" NA
Sep 15 29° 60° 18° (1971) 78° (1990) 0.05" NA
Sep 16 28° 60° 15° (1965) 83° (1956) 0.05" NA
Sep 17 28° 60° 14° (1965) 78° (2000) 0.05" NA
Sep 18 28° 59° 10° (1965) 76° (1981) 0.05" NA
Sep 19 28° 59° 5° (1983) 76° (1981) 0.05" NA
Sep 20 27° 59° 2° (1983) 75° (1956) 0.05" NA
Sep 21 27° 58° 8° (1983) 72° (1966) 0.05" NA
Sep 22 27° 58° 17° (1956) 73° (1966) 0.05" NA
Sep 23 27° 57° 14° (1971) 73° (1987) 0.05" NA
Sep 24 26° 57° 10° (1972) 77° (1987) 0.05" NA
Sep 25 26° 57° 14° (1984) 75° (1987) 0.05" NA
Sep 26 26° 56° 12° (1972) 74° (2001) 0.05" NA
Sep 27 26° 56° 13° (1999) 79° (1966) 0.05" NA
Sep 28 25° 56° 8° (1999) 76° (2001) 0.05" NA
Sep 29 25° 55° -5° (1985) 74° (1987) 0.05" NA
Sep 30 25° 55° 0° (1985) 73° (1987) 0.05" NA
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