February weather in Mercer Island, WA
The average temperature in Mercer Island in February is 43.7°F (36.8°F–50.7°F). Average precipitation: 3.71 inches.
February is a winter month in Mercer Island, and is cooler than the annual average of 53.8°F. Daily temperatures swing about 13.9°F between overnight low and afternoon high. Expect about 16 days with precipitation. Daylight averages about 10h 0m. For travel, February is cool.
Avg High
50.7°F
Avg Low
36.8°F
Precipitation
3.71 in
Daylight
10h 0m
February records in Mercer Island
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| February 1 | 63.0°F (1962) | 3.9°F (1950) | 1.19 in (2000) |
| February 2 | 64.9°F (1962) | 7.0°F (1950) | 1.26 in (1963) |
| February 3 | 61.0°F (1954) | 9.0°F (1950) | 0.66 in (2017) |
| February 4 | 62.1°F (2026) | 25.2°F (2019) | 0.94 in (1965) |
| February 5 | 60.1°F (2010) | 16.2°F (2019) | 0.90 in (2015) |
| February 6 | 63.0°F (1963) | 18.1°F (2019) | 1.42 in (1960) |
| February 7 | 64.9°F (1954) | 19.2°F (2019) | 1.43 in (1955) |
| February 8 | 70.0°F (1963) | 28.9°F (1964) | 1.39 in (1951) |
| February 9 | 62.1°F (1963) | 21.2°F (2019) | 2.58 in (1951) |
| February 10 | 66.0°F (1963) | 14.2°F (2019) | 0.88 in (1949) |
| February 11 | 62.1°F (2004) | 22.1°F (2025) | 0.89 in (2019) |
| February 12 | 81.0°F (2015) | 22.1°F (2025) | 1.27 in (1954) |
| February 13 | 72.0°F (2015) | 19.9°F (1949) | 0.60 in (1961) |
| February 14 | 60.1°F (2015) | 25.0°F (1956) | 0.85 in (2011) |
| February 15 | 60.1°F (2002) | 16.0°F (1956) | 1.65 in (2017) |
| February 16 | 62.1°F (2015) | 17.1°F (1956) | 1.98 in (1949) |
| February 17 | 61.0°F (2015) | 24.3°F (2006) | 0.46 in (2016) |
| February 18 | 63.0°F (1958) | 20.1°F (2006) | 0.62 in (2014) |
| February 19 | 59.0°F (2010) | 22.1°F (2006) | 0.83 in (1954) |
| February 20 | 60.1°F (1958) | 24.3°F (2006) | 0.57 in (1948) |
| February 21 | 59.0°F (1958) | 23.2°F (2018) | 1.46 in (1949) |
| February 22 | 62.1°F (2004) | 25.2°F (2022) | 0.90 in (2002) |
| February 23 | 64.0°F (1958) | 22.1°F (2022) | 1.14 in (1957) |
| February 24 | 64.0°F (1949) | 24.3°F (2023) | 1.56 in (1961) |
| February 25 | 61.0°F (2016) | 21.2°F (2023) | 0.95 in (1950) |
| February 26 | 62.1°F (2008) | 19.2°F (2011) | 1.23 in (1965) |
| February 27 | 64.9°F (2025) | 21.0°F (1962) | 0.97 in (1999) |
| February 28 | 66.9°F (1949) | 25.0°F (1960) | 1.38 in (2022) |
| February 29 | 60.1°F (2008) | 24.1°F (1960) | 0.70 in (1964) |