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
Sep 1 0.6° 18.9° -5° (1952) 27° (1991) 0.06" NA
Sep 2 18.9° -7° (1974) 26° (1948) 0.06" NA
Sep 3 18.3° -7° (1975) 27° (1998) 0.06" NA
Sep 4 18.3° -6° (1975) 28° (1950) 0.06" NA
Sep 5 -0.6° 17.8° -6° (1975) 27° (2001) 0.06" NA
Sep 6 -0.6° 17.8° -6° (1993) 27° (1950) 0.06" NA
Sep 7 -0.6° 17.2° -9° (1992) 25° (1988) 0.06" NA
Sep 8 -0.6° 17.2° -7° (1962) 25° (1979) 0.06" NA
Sep 9 -1.1° 17.2° -9° (1962) 24° (1969) 0.06" NA
Sep 10 -1.1° 16.7° -5° (1983) 24° (1981) 0.05" NA
Sep 11 -1.1° 16.7° -7° (1989) 25° (1996) 0.05" NA
Sep 12 -1.7° 16.7° -7° (1979) 25° (1990) 0.05" NA
Sep 13 -1.7° 16.1° -8° (1974) 24° (1969) 0.05" NA
Sep 14 -1.7° 16.1° -9° (1952) 26° (1948) 0.05" NA
Sep 15 -1.7° 15.6° -8° (1971) 26° (1990) 0.05" NA
Sep 16 -2.2° 15.6° -9° (1965) 28° (1956) 0.05" NA
Sep 17 -2.2° 15.6° -10° (1965) 26° (2000) 0.05" NA
Sep 18 -2.2° 15° -12° (1965) 24° (1981) 0.05" NA
Sep 19 -2.2° 15° -15° (1983) 24° (1981) 0.05" NA
Sep 20 -2.8° 15° -17° (1983) 24° (1956) 0.05" NA
Sep 21 -2.8° 14.4° -13° (1983) 22° (1966) 0.05" NA
Sep 22 -2.8° 14.4° -8° (1956) 23° (1966) 0.05" NA
Sep 23 -2.8° 13.9° -10° (1971) 23° (1987) 0.05" NA
Sep 24 -3.3° 13.9° -12° (1972) 25° (1987) 0.05" NA
Sep 25 -3.3° 13.9° -10° (1984) 24° (1987) 0.05" NA
Sep 26 -3.3° 13.3° -11° (1972) 23° (2001) 0.05" NA
Sep 27 -3.3° 13.3° -11° (1999) 26° (1966) 0.05" NA
Sep 28 -3.9° 13.3° -13° (1999) 24° (2001) 0.05" NA
Sep 29 -3.9° 12.8° -21° (1985) 23° (1987) 0.05" NA
Sep 30 -3.9° 12.8° -18° (1985) 23° (1987) 0.05" NA
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