Porthill, Idaho
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 18° 33° -31° (1950) 54° (2003) 2.13" NA
February 22° 39° -29° (1950) 57° (1988) 1.69" NA
March 27° 49° -17° (1955) 77° (2004) 1.52" NA
April 34° 59° 15° (1975) 84° (1977) 1.43" NA
May 41° 68° 17° (1954) 95° (2001) 1.92" NA
June 47° 75° 28° (1998) 97° (1992) 1.85" NA
July 51° 82° 35° (1962) 103° (2006) 1.34" NA
August 49° 82° 32° (1962) 101° (1998) 1.21" NA
September 40° 71° 24° (1984) 97° (1998) 1.24" NA
October 32° 57° 11° (1991) 81° (2006) 1.41" NA
November 26° 42° -18° (1959) 67° (1978) 2.76" NA
December 19° 34° -37° (1968) 59° (1980) 2.41" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 45° 77° 35° (1952) 96° (1967) 0.04" NA
Sep 2 45° 77° 31° (1956) 95° (1998) 0.04" NA
Sep 3 44° 77° 30° (1962) 95° (1988) 0.04" NA
Sep 4 44° 76° 32° (1956) 97° (1998) 0.04" NA
Sep 5 44° 76° 30° (1956) 95° (1998) 0.04" NA
Sep 6 43° 75° 29° (1992) 95° (1998) 0.04" NA
Sep 7 43° 75° 27° (1962) 96° (1998) 0.04" NA
Sep 8 43° 75° 29° (1962) 90° (1958) 0.04" NA
Sep 9 42° 74° 31° (1959) 89° (1981) 0.05" NA
Sep 10 42° 74° 32° (1983) 88° (1993) 0.05" NA
Sep 11 42° 73° 30° (1964) 91° (1973) 0.05" NA
Sep 12 41° 73° 27° (1949) 91° (1987) 0.05" NA
Sep 13 41° 72° 27° (1970) 86° (2006) 0.04" NA
Sep 14 41° 72° 26° (1970) 88° (1988) 0.04" NA
Sep 15 41° 71° 26° (1970) 88° (2001) 0.04" NA
Sep 16 40° 71° 26° (1965) 88° (1998) 0.04" NA
Sep 17 40° 71° 28° (1971) 89° (2001) 0.04" NA
Sep 18 40° 70° 29° (1971) 87° (1984) 0.04" NA
Sep 19 39° 70° 24° (1957) 85° (1952) 0.04" NA
Sep 20 39° 69° 27° (1983) 88° (1967) 0.04" NA
Sep 21 39° 69° 30° (1953) 93° (1967) 0.04" NA
Sep 22 38° 68° 27° (1956) 86° (1999) 0.04" NA
Sep 23 38° 68° 25° (1996) 86° (1999) 0.04" NA
Sep 24 38° 67° 26° (1996) 86° (1999) 0.04" NA
Sep 25 37° 67° 25° (1996) 87° (2001) 0.04" NA
Sep 26 37° 67° 28° (1951) 92° (1952) 0.04" NA
Sep 27 37° 66° 24° (1984) 85° (1967) 0.04" NA
Sep 28 37° 66° 25° (1984) 89° (1967) 0.04" NA
Sep 29 36° 65° 25° (1985) 82° (1952) 0.04" NA
Sep 30 36° 65° 28° (1983) 82° (1963) 0.04" NA
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