June weather in Portola Valley, CA
The average temperature in Portola Valley in June is 63.6°F (52.0°F–75.2°F). Average precipitation: 0.42 inches.
June is a summer month in Portola Valley, and is warmer than the annual average of 57.1°F. Daily temperatures swing about 23.2°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 14h 32m. For travel, June is one of the best months of the year to visit.
Avg High
75.2°F
Avg Low
52.0°F
Precipitation
0.42 in
Daylight
14h 32m
June records in Portola Valley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| June 1 | 93.0°F (2001) | 39.9°F (2008) | 0.22 in (2011) |
| June 2 | 89.1°F (2016) | 37.9°F (1999) | 0.10 in (1999) |
| June 3 | 91.9°F (2016) | 37.0°F (1999) | 0.30 in (1999) |
| June 4 | 91.0°F (2020) | 39.9°F (1999) | 0.66 in (2011) |
| June 5 | 86.0°F (2016) | 39.9°F (2012) | 0.59 in (2011) |
| June 6 | 89.1°F (2002) | 39.9°F (2005) | 0.02 in (2023) |
| June 7 | 93.9°F (2013) | 37.9°F (2008) | 0.18 in (1998) |
| June 8 | 95.0°F (2013) | 37.9°F (1999) | 0.26 in (1998) |
| June 9 | 93.0°F (2014) | 39.9°F (1999) | 0.48 in (2005) |
| June 10 | 95.0°F (2019) | 39.9°F (1999) | 0.16 in (2015) |
| June 11 | 96.1°F (2019) | 42.1°F (2010) | 0.15 in (1998) |
| June 12 | 89.1°F (2015) | 39.9°F (1997) | 0.06 in (1998) |
| June 13 | 84.0°F (2008) | 43.0°F (2017) | 0.06 in (2009) |
| June 14 | 88.0°F (2007) | 41.0°F (2002) | 0.01 in (2020) |
| June 15 | 91.9°F (2007) | 42.1°F (2012) | 0.02 in (2006) |
| June 16 | 95.0°F (2012) | 42.1°F (2016) | 0.02 in (2009) |
| June 17 | 97.0°F (2021) | 41.0°F (2014) | 0.55 in (2005) |
| June 18 | 96.1°F (2017) | 42.1°F (2010) | 0.02 in (2005) |
| June 19 | 93.0°F (2017) | 42.1°F (2023) | 0.03 in (2003) |
| June 20 | 91.0°F (2017) | 41.0°F (2023) | 0.02 in (2023) |
| June 21 | 97.0°F (2008) | 42.1°F (2002) | 0.02 in (2002) |
| June 22 | 93.9°F (2017) | 41.0°F (2003) | 0.09 in (2002) |
| June 23 | 95.0°F (2018) | 41.0°F (2003) | 0.08 in (2023) |
| June 24 | 91.0°F (2006) | 42.1°F (2012) | 0.10 in (2013) |
| June 25 | 91.0°F (2001) | 41.0°F (2012) | 0.03 in (1998) |
| June 26 | 91.9°F (2016) | 43.0°F (2023) | 0.14 in (2001) |
| June 27 | 91.9°F (2003) | 44.1°F (1997) | 0.02 in (1996) |
| June 28 | 95.0°F (2013) | 43.0°F (2023) | 0.01 in (2005) |
| June 29 | 98.1°F (2009) | 44.1°F (1998) | 1.07 in (2011) |
| June 30 | 98.1°F (2015) | 44.1°F (2022) | 0.10 in (1997) |