April weather in Friday Harbor, WA
The average temperature in Friday Harbor in April is 49.1°F (40.7°F–57.4°F). Average precipitation: 1.01 inches.
April is a spring month in Friday Harbor, and is cooler than the annual average of 50.9°F. Daily temperatures swing about 16.7°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 13h 27m. For travel, April is a comfortable month to visit.
Avg High
57.4°F
Avg Low
40.7°F
Precipitation
1.01 in
Daylight
13h 27m
April records in Friday Harbor
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 63.0°F (2019) | 27.1°F (2008) | 0.79 in (2009) |
| April 2 | 66.0°F (2019) | 30.0°F (2002) | 0.31 in (2010) |
| April 3 | 64.9°F (2004) | 29.1°F (2008) | 0.29 in (2010) |
| April 4 | 62.1°F (2019) | 29.1°F (2009) | 0.43 in (2011) |
| April 5 | 69.1°F (2025) | 31.1°F (2012) | 0.20 in (2011) |
| April 6 | 69.1°F (2007) | 30.2°F (2012) | 0.22 in (2025) |
| April 7 | 64.9°F (2016) | 30.2°F (2012) | 0.24 in (1999) |
| April 8 | 64.9°F (2016) | 30.0°F (1998) | 0.30 in (2024) |
| April 9 | 64.0°F (2020) | 30.2°F (2008) | 0.19 in (2003) |
| April 10 | 66.9°F (2004) | 33.1°F (2010) | 0.23 in (2001) |
| April 11 | 73.0°F (2004) | 31.1°F (2021) | 0.12 in (2005) |
| April 12 | 80.1°F (2019) | 32.0°F (2021) | 0.58 in (2022) |
| April 13 | 84.0°F (2019) | 30.9°F (2001) | 0.69 in (2000) |
| April 14 | 68.0°F (2019) | 30.0°F (1999) | 0.38 in (2026) |
| April 15 | 69.1°F (2021) | 31.1°F (2009) | 0.08 in (2005) |
| April 16 | 71.1°F (2021) | 33.1°F (2026) | 0.13 in (2018) |
| April 17 | 73.0°F (2021) | 34.0°F (1998) | 0.20 in (2007) |
| April 18 | 79.0°F (2016) | 32.0°F (2011) | 0.24 in (2007) |
| April 19 | 75.0°F (2016) | 33.1°F (2007) | 0.17 in (1999) |
| April 20 | 75.9°F (2016) | 32.0°F (2007) | 0.14 in (2010) |
| April 21 | 66.0°F (2021) | 32.0°F (2008) | 0.17 in (2003) |
| April 22 | 71.1°F (2005) | 33.1°F (2008) | 0.69 in (2020) |
| April 23 | 66.9°F (2005) | 34.0°F (2002) | 0.31 in (2016) |
| April 24 | 71.1°F (2006) | 30.0°F (2000) | 0.36 in (2010) |
| April 25 | 81.0°F (2025) | 32.0°F (2008) | 0.36 in (2024) |
| April 26 | 73.0°F (2018) | 31.1°F (2008) | 0.23 in (2002) |
| April 27 | 71.1°F (2005) | 36.0°F (2019) | 0.22 in (2024) |
| April 28 | 68.0°F (2023) | 33.1°F (1999) | 0.17 in (2008) |
| April 29 | 70.0°F (1998) | 35.1°F (2002) | 0.18 in (2001) |
| April 30 | 75.9°F (2004) | 35.1°F (2013) | 0.18 in (2001) |