Rocky Butte, Washington
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 17° 29° -22° (1950) 59° (1945) 1.16" NA
February 22° 39° -26° (1950) 63° (1932) 1.24" NA
March 30° 51° -7° (1951) 76° (1994) 1" NA
April 37° 62° 15° (1936) 96° (1934) 1.11" NA
May 44° 71° 19° (1954) 98° (1934) 1.08" NA
June 51° 78° 30° (1973) 102° (1992) 1.22" NA
July 57° 85° 35° (1973) 109° (1939) 0.8" NA
August 56° 85° 34° (1965) 106° (1998) 0.65" NA
September 47° 76° 20° (1945) 101° (1938) 0.54" NA
October 35° 60° 8° (1935) 86° (1943) 0.76" NA
November 28° 41° -3° (1993) 70° (1933) 1.45" NA
December 19° 31° -21° (1948) 67° (1932) 1.82" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Dec 1 23° 34° 9° (1975) 57° (1949) 0.06" NA
Dec 2 23° 34° 0° (1950) 67° (1932) 0.06" NA
Dec 3 22° 34° 1° (1942) 58° (1943) 0.06" NA
Dec 4 22° 34° 1° (1970) 53° (1943) 0.06" NA
Dec 5 22° 33° 4° (1978) 56° (2007) 0.06" NA
Dec 6 21° 33° -1° (1956) 53° (1940) 0.06" NA
Dec 7 21° 33° -2° (1956) 51° (1940) 0.06" NA
Dec 8 21° 33° -2° (1948) 47° (1939) 0.06" NA
Dec 9 21° 32° 4° (1970) 49° (1938) 0.06" NA
Dec 10 20° 32° 1° (1947) 54° (1956) 0.06" NA
Dec 11 20° 32° -1° (1932) 55° (1939) 0.06" NA
Dec 12 20° 32° -9° (1931) 52° (1953) 0.06" NA
Dec 13 19° 31° -3° (1932) 47° (1999) 0.06" NA
Dec 14 19° 31° -6° (1955) 46° (2006) 0.06" NA
Dec 15 19° 31° -9° (1964) 52° (1939) 0.06" NA
Dec 16 19° 31° -12° (1964) 52° (2002) 0.06" NA
Dec 17 18° 31° -12° (1964) 53° (1999) 0.06" NA
Dec 18 18° 30° -3° (1964) 53° (1936) 0.06" NA
Dec 19 18° 30° -3° (1978) 53° (1936) 0.06" NA
Dec 20 18° 30° -3° (1951) 54° (1934) 0.06" NA
Dec 21 18° 30° -7° (1951) 49° (1933) 0.06" NA
Dec 22 17° 30° -5° (1948) 54° (1936) 0.06" NA
Dec 23 17° 29° -16° (1948) 51° (1936) 0.06" NA
Dec 24 17° 29° -18° (1948) 46° (1934) 0.06" NA
Dec 25 17° 29° -20° (1948) 47° (1957) 0.06" NA
Dec 26 17° 29° -20° (1948) 50° (1972) 0.06" NA
Dec 27 17° 29° -21° (1948) 44° (1936) 0.06" NA
Dec 28 17° 29° -12° (1968) 52° (1953) 0.05" NA
Dec 29 16° 29° -14° (1968) 49° (1994) 0.05" NA
Dec 30 16° 29° -16° (1968) 48° (1998) 0.05" NA
Dec 31 16° 28° -14° (1968) 48° (1958) 0.05" NA
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