Port Isabel, Texas
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 52° 68° 22° (1963) 89° (1936) 1.88" 0"
February 55° 71° 23° (1951) 91° (2006) 1.74" 0"
March 60° 76° 32° (1948) 100° (1984) 1.5" 0"
April 67° 80° 37° (1938) 96° (2003) 1.51" 0"
May 73° 85° 52° (1996) 98° (2006) 2.22" 0"
June 76° 89° 62° (1957) 99° (1936) 2.49" 0"
July 77° 90° 66° (1942) 99° (2002) 1.91" 0"
August 77° 91° 62° (1967) 99° (2003) 1.75" 0"
September 74° 88° 55° (1995) 103° (2002) 6.3" 0"
October 69° 84° 37° (1993) 96° (1941) 4.03" 0"
November 62° 78° 34° (1976) 95° (1988) 2.27" 0"
December 53° 70° 17° (1989) 90° (1977) 1.43" 0.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jan 1 51° 68° 34° (1947) 86° (1986) 0.05" 0"
Jan 2 51° 68° 29° (1979) 81° (1960) 0.06" 0"
Jan 3 51° 68° 29° (1979) 82° (2000) 0.06" 0"
Jan 4 51° 68° 29° (1947) 84° (2000) 0.06" 0"
Jan 5 51° 68° 32° (1947) 83° (1934) 0.06" 0"
Jan 6 51° 68° 34° (1959) 85° (2007) 0.06" 0"
Jan 7 51° 68° 32° (1996) 81° (1978) 0.06" 0"
Jan 8 51° 68° 33° (1968) 81° (1989) 0.07" 0"
Jan 9 51° 68° 33° (1968) 86° (2008) 0.06" 0"
Jan 10 51° 68° 23° (1962) 82° (2000) 0.06" 0"
Jan 11 52° 68° 24° (1962) 80° (1940) 0.06" 0"
Jan 12 52° 68° 22° (1962) 89° (1936) 0.06" 0"
Jan 13 52° 68° 0° (2010) 81° (1950) 0.07" 0"
Jan 14 52° 68° 0° (2010) 84° (1960) 0.06" 0"
Jan 15 52° 68° 0° (2010) 81° (1957) 0.05" 0"
Jan 16 52° 68° 38° (1953) 80° (1935) 0.06" 0"
Jan 17 52° 68° 35° (1957) 83° (1999) 0.05" 0"
Jan 18 52° 68° 0° (2010) 82° (1938) 0.05" 0"
Jan 19 52° 68° 0° (2010) 81° (1935) 0.06" 0"
Jan 20 52° 69° 0° (2010) 85° (2009) 0.05" 0"
Jan 21 52° 69° 0° (2010) 80° (1999) 0.07" 0"
Jan 22 52° 69° 27° (1930) 84° (1969) 0.06" 0"
Jan 23 52° 69° 29° (1940) 83° (1999) 0.07" 0"
Jan 24 52° 69° 26° (1963) 87° (2000) 0.06" 0"
Jan 25 53° 69° 36° (1940) 87° (2002) 0.07" 0"
Jan 26 53° 69° 35° (1940) 81° (1950) 0.06" 0"
Jan 27 53° 69° 34° (1966) 82° (1967) 0.07" 0"
Jan 28 53° 69° 28° (1948) 81° (1985) 0.07" 0"
Jan 29 53° 69° 29° (1948) 83° (2006) 0.06" 0"
Jan 30 53° 69° 26° (1949) 85° (1965) 0.06" 0"
Jan 31 53° 69° 28° (1951) 83° (2006) 0.06" 0"
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