April weather in Index, WA
The average temperature in Index in April is 48.2°F (38.0°F–58.5°F). Average precipitation: 8.35 inches. Average snowfall is 0.8 inches.
April is a spring month in Index, and is cooler than the annual average of 49.8°F. Daily temperatures swing about 20.5°F between overnight low and afternoon high. Expect about 18 days with precipitation. Daylight averages about 13h 24m. For travel, April is a wet month.
Avg High
58.5°F
Avg Low
38.0°F
Precipitation
8.35 in
Snow
0.8 in
April records in Index
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 80.1°F (1987) | 27.0°F (1975) | 1.37 in (1972) |
| April 2 | 84.0°F (1992) | 28.0°F (1976) | 2.09 in (2009) |
| April 3 | 73.0°F (1995) | 27.0°F (1972) | 1.11 in (1991) |
| April 4 | 78.1°F (2004) | 28.9°F (1997) | 2.83 in (1991) |
| April 5 | 80.1°F (1977) | 28.0°F (2021) | 4.44 in (1989) |
| April 6 | 77.0°F (1977) | 28.0°F (1982) | 2.51 in (1988) |
| April 7 | 82.0°F (1977) | 28.0°F (1973) | 1.34 in (1994) |
| April 8 | 84.0°F (2016) | 28.0°F (1975) | 1.65 in (2018) |
| April 9 | 81.0°F (2016) | 28.0°F (1982) | 2.23 in (1970) |
| April 10 | 73.9°F (1988) | 28.0°F (1972) | 8.82 in (1984) |
| April 11 | 82.0°F (2004) | 28.0°F (2021) | 2.21 in (1974) |
| April 12 | 82.9°F (2004) | 28.9°F (1971) | 1.43 in (2002) |
| April 13 | 82.0°F (1980) | 28.0°F (2021) | 1.66 in (1977) |
| April 14 | 78.1°F (1984) | 28.9°F (1970) | 2.36 in (2018) |
| April 15 | 77.0°F (1990) | 30.0°F (1970) | 1.04 in (1987) |
| April 16 | 80.1°F (1990) | 28.9°F (1972) | 1.36 in (2005) |
| April 17 | 81.0°F (2021) | 28.9°F (2022) | 2.51 in (1992) |
| April 18 | 82.9°F (2021) | 28.9°F (1972) | 1.54 in (1994) |
| April 19 | 89.1°F (2016) | 28.0°F (1972) | 1.28 in (2011) |
| April 20 | 87.1°F (2016) | 28.9°F (1977) | 2.67 in (1997) |
| April 21 | 87.1°F (2016) | 28.0°F (2008) | 1.59 in (1972) |
| April 22 | 82.9°F (1982) | 30.0°F (1971) | 1.63 in (1981) |
| April 23 | 79.0°F (1977) | 32.0°F (1972) | 3.67 in (1996) |
| April 24 | 80.1°F (1977) | 28.0°F (1986) | 1.19 in (2014) |
| April 25 | 82.0°F (1992) | 28.0°F (1986) | 1.28 in (1990) |
| April 26 | 84.0°F (1987) | 30.0°F (1984) | 1.48 in (1990) |
| April 27 | 88.0°F (2018) | 32.0°F (1984) | 2.08 in (1985) |
| April 28 | 80.1°F (2015) | 30.9°F (2019) | 3.02 in (1981) |
| April 29 | 82.9°F (1998) | 28.9°F (1975) | 1.35 in (1993) |
| April 30 | 91.0°F (1998) | 28.9°F (1972) | 1.60 in (2001) |