April weather in Portola Valley, CA
The average temperature in Portola Valley in April is 52.1°F (42.6°F–61.6°F). Average precipitation: 3.37 inches.
April is a spring month in Portola Valley, and is cooler than the annual average of 57.1°F. Daily temperatures swing about 19°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 58m. For travel, April is a comfortable month to visit.
Avg High
61.6°F
Avg Low
42.6°F
Precipitation
3.37 in
Daylight
12h 58m
April records in Portola Valley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 78.1°F (2021) | 30.0°F (2008) | 1.15 in (1998) |
| April 2 | 78.1°F (2011) | 25.0°F (1997) | 0.74 in (1996) |
| April 3 | 78.1°F (2000) | 30.0°F (2001) | 1.36 in (2006) |
| April 4 | 73.9°F (2000) | 28.0°F (2023) | 0.90 in (2020) |
| April 5 | 73.9°F (2016) | 30.9°F (2024) | 1.23 in (2020) |
| April 6 | 82.9°F (2016) | 30.9°F (1999) | 2.00 in (2018) |
| April 7 | 87.1°F (2022) | 32.0°F (2001) | 1.42 in (2018) |
| April 8 | 81.0°F (2022) | 32.0°F (2011) | 0.85 in (2006) |
| April 9 | 75.9°F (2014) | 28.9°F (1999) | 1.04 in (2005) |
| April 10 | 79.0°F (2013) | 32.0°F (1999) | 0.34 in (2016) |
| April 11 | 77.0°F (2024) | 34.0°F (2022) | 0.85 in (2022) |
| April 12 | 73.9°F (2013) | 32.0°F (2022) | 2.10 in (2010) |
| April 13 | 78.1°F (2008) | 33.1°F (2022) | 2.75 in (2003) |
| April 14 | 80.1°F (2008) | 32.0°F (1998) | 0.45 in (2022) |
| April 15 | 75.0°F (2020) | 33.1°F (2001) | 0.40 in (2007) |
| April 16 | 75.9°F (2014) | 34.0°F (2023) | 1.19 in (2022) |
| April 17 | 81.0°F (1999) | 34.0°F (2018) | 1.37 in (2000) |
| April 18 | 81.0°F (2016) | 33.1°F (2002) | 0.33 in (1996) |
| April 19 | 77.0°F (2016) | 34.0°F (2002) | 0.28 in (2022) |
| April 20 | 78.1°F (2009) | 30.9°F (2008) | 0.58 in (2010) |
| April 21 | 82.9°F (2009) | 30.9°F (2008) | 1.02 in (2001) |
| April 22 | 84.0°F (2009) | 33.1°F (2008) | 1.38 in (2016) |
| April 23 | 82.0°F (2019) | 34.0°F (2001) | 1.39 in (2016) |
| April 24 | 84.0°F (2019) | 33.1°F (2008) | 0.63 in (2003) |
| April 25 | 80.1°F (2019) | 33.1°F (2008) | 1.32 in (2015) |
| April 26 | 82.0°F (2019) | 35.1°F (2016) | 0.61 in (2003) |
| April 27 | 82.9°F (2004) | 35.1°F (2003) | 0.82 in (2003) |
| April 28 | 84.0°F (2004) | 32.0°F (2002) | 0.54 in (2010) |
| April 29 | 84.0°F (2013) | 32.0°F (2002) | 0.71 in (2005) |
| April 30 | 84.0°F (2014) | 34.0°F (2008) | 0.02 in (2006) |