July weather in St. Helens, OR
The average temperature in St. Helens in July is 66.9°F (55.0°F–78.8°F). Average precipitation: inches.
July is a summer month in St. Helens, and is warmer than the annual average of 51.6°F. Daily temperatures swing about 23.8°F between overnight low and afternoon high. Daylight averages about 15h 12m. For travel, July is one of the best months of the year to visit.
Avg High
78.8°F
Avg Low
55.0°F
Precipitation
in
Daylight
15h 12m
July records in St. Helens
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 100.0°F (1995) | 46.9°F (2000) | 0.60 in (1983) |
| July 2 | 96.1°F (1991) | 46.0°F (2010) | 0.60 in (1983) |
| July 3 | 93.0°F (2001) | 43.0°F (2003) | 0.27 in (1980) |
| July 4 | 88.0°F (1981) | 42.1°F (1983) | 0.28 in (1977) |
| July 5 | 88.0°F (1999) | 44.1°F (2005) | 0.43 in (1988) |
| July 6 | 90.0°F (2002) | 44.1°F (1984) | 0.17 in (1992) |
| July 7 | 93.9°F (1996) | 37.9°F (2004) | 0.09 in (1981) |
| July 8 | 95.0°F (2010) | 44.1°F (1981) | 0.48 in (1983) |
| July 9 | 95.0°F (1985) | 45.0°F (1981) | 1.10 in (1995) |
| July 10 | 104.0°F (2002) | 46.0°F (1977) | 0.45 in (1986) |
| July 11 | 98.1°F (2004) | 44.1°F (2002) | 0.18 in (1988) |
| July 12 | 97.0°F (1996) | 41.0°F (2002) | 0.20 in (2006) |
| July 13 | 100.9°F (1996) | 46.0°F (1977) | 0.56 in (2011) |
| July 14 | 104.0°F (1996) | 46.0°F (1977) | 0.07 in (1983) |
| July 15 | 93.9°F (1979) | 42.1°F (2005) | 0.30 in (2011) |
| July 16 | 102.9°F (1979) | 46.0°F (1982) | 0.80 in (1978) |
| July 17 | 100.9°F (1979) | 46.0°F (1982) | 0.40 in (1999) |
| July 18 | 99.0°F (1992) | 44.1°F (1999) | 0.64 in (1987) |
| July 19 | 100.9°F (1988) | 37.0°F (1982) | 0.70 in (1983) |
| July 20 | 104.0°F (1994) | 51.1°F (1977) | 0.25 in (1993) |
| July 21 | 105.1°F (2006) | 44.1°F (2011) | 0.05 in (1993) |
| July 22 | 102.9°F (2002) | 50.0°F (2001) | 0.40 in (1993) |
| July 23 | 106.0°F (2004) | 48.0°F (2003) | 0.48 in (2014) |
| July 24 | 102.0°F (2004) | 48.0°F (2005) | 0.09 in (1991) |
| July 25 | 102.0°F (2004) | 42.1°F (2003) | 0.07 in (1983) |
| July 26 | 98.1°F (1988) | 48.9°F (1999) | 0.05 in (1983) |
| July 27 | 97.0°F (1996) | 39.9°F (2002) | 0.27 in (1983) |
| July 28 | 100.9°F (1998) | 44.1°F (2000) | 0.80 in (1993) |
| July 29 | 100.9°F (2003) | 48.0°F (1977) | 0.30 in (1993) |
| July 30 | 102.9°F (1992) | 48.9°F (1981) | 0.40 in (2001) |
| July 31 | 100.9°F (2003) | 46.0°F (1998) | 0.36 in (1989) |