July weather in Index, WA
The average temperature in Index in July is 64.4°F (52.1°F–76.7°F). Average precipitation: 1.73 inches.
July is a summer month in Index, and is warmer than the annual average of 49.8°F. Daily temperatures swing about 24.6°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 15h 26m. For travel, July is one of the best months of the year to visit.
Avg High
76.7°F
Avg Low
52.1°F
Precipitation
1.73 in
Daylight
15h 26m
July records in Index
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 88.0°F (2015) | 42.1°F (1972) | 1.06 in (1994) |
| July 2 | 93.9°F (2014) | 37.0°F (1971) | 1.21 in (1978) |
| July 3 | 93.0°F (2015) | 37.9°F (1971) | 0.70 in (2022) |
| July 4 | 93.0°F (1972) | 43.0°F (1988) | 0.82 in (1992) |
| July 5 | 90.0°F (2015) | 41.0°F (1996) | 0.91 in (1987) |
| July 6 | 93.0°F (2015) | 41.0°F (1974) | 1.13 in (2005) |
| July 7 | 88.0°F (2015) | 39.0°F (1971) | 0.69 in (1981) |
| July 8 | 95.0°F (2010) | 43.0°F (1984) | 1.36 in (1997) |
| July 9 | 93.9°F (2010) | 42.1°F (2011) | 1.42 in (1997) |
| July 10 | 93.0°F (2010) | 44.1°F (1972) | 1.02 in (1979) |
| July 11 | 93.0°F (2002) | 43.0°F (2008) | 1.33 in (1979) |
| July 12 | 96.1°F (2007) | 43.0°F (1973) | 2.57 in (1972) |
| July 13 | 90.0°F (2014) | 43.0°F (1970) | 2.34 in (1983) |
| July 14 | 90.0°F (1996) | 43.0°F (1979) | 0.49 in (1982) |
| July 15 | 91.9°F (1970) | 44.1°F (2000) | 0.62 in (1982) |
| July 16 | 95.0°F (1979) | 44.1°F (2000) | 0.62 in (1986) |
| July 17 | 91.0°F (1979) | 44.1°F (2017) | 0.92 in (1986) |
| July 18 | 91.0°F (1985) | 41.0°F (1976) | 0.85 in (2019) |
| July 19 | 95.0°F (1988) | 41.0°F (1977) | 1.52 in (1996) |
| July 20 | 95.0°F (1994) | 43.0°F (1974) | 1.04 in (1993) |
| July 21 | 91.9°F (1990) | 46.0°F (1984) | 0.29 in (2011) |
| July 22 | 100.0°F (2006) | 41.0°F (1982) | 0.48 in (2007) |
| July 23 | 95.0°F (1991) | 41.0°F (1982) | 0.70 in (2014) |
| July 24 | 97.0°F (2004) | 41.0°F (1973) | 1.14 in (2014) |
| July 25 | 97.0°F (2004) | 45.0°F (2020) | 0.55 in (1970) |
| July 26 | 93.0°F (1998) | 45.0°F (2003) | 1.20 in (1995) |
| July 27 | 96.1°F (2022) | 41.0°F (1976) | 0.25 in (1970) |
| July 28 | 96.1°F (1998) | 45.0°F (1976) | 0.31 in (1993) |
| July 29 | 98.1°F (2009) | 44.1°F (1980) | 0.42 in (1993) |
| July 30 | 100.0°F (2009) | 44.1°F (1986) | 0.59 in (2008) |
| July 31 | 100.9°F (2009) | 43.0°F (2008) | 0.62 in (1987) |