Seattle weather in April: Seattle, Washington: normal highs, lows, rain and records for April
Seattle in April has a normal high of 59°F and a normal low of 43°F, a daily mean of 51°F, rising from 57°F on the 1st to 63°F by the 30th. Measurable precipitation falls on 15 days in a normal April, 3.18 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 15°C and low of 6°C, 81 mm of precipitation in April.
- NOAA stationSeattle Tacoma International Airport
- Station IDUSW00024233
- Location47.44°N 122.31°W
- Elevation370 ft (113 m)
- From the center12 miles
- Population780,995
- Jan 48° 38°
- Feb 50° 38°
- Mar 54° 40°
- Apr 59° 43°
- May 66° 49°
- Jun 71° 53°
- Jul 77° 57°
- Aug 78° 57°
- Sep 72° 54°
- Oct 61° 47°
- Nov 52° 41°
- Dec 47° 37°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Seattle in April?
The normal high is 59°F and the normal low 43°F, for a daily mean of 51.3°F. April is 4.2°F warmer than March and 6.2°F cooler than May. April is the 7th warmest month of the year in Seattle and the 7th wettest. Across the month the normal high rises 6°F, from 57°F on April 1 to 63°F on April 30. From one year to the next April's mean temperature typically moves about 1.9°F either way (NOAA's standard deviation), so roughly two Aprils in three average between 49°F and 53°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 52%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| April 1 | 57°F | 42°F | 52% | 32% |
| April 8 | 58°F | 42°F | 51% | 30% |
| April 15 | 59°F | 43°F | 49% | 28% |
| April 22 | 61°F | 44°F | 47% | 26% |
| April 30 | 63°F | 46°F | 44% | 23% |
Every day of April: normal high, low and chance of precipitation (warmest afternoon April 30, coldest night April 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| April 1 | 57°F | 42°F | 52% | 32% | 12 h 50 min |
| April 2 | 57°F | 42°F | 52% | 32% | 12 h 50 min |
| April 3 | 57°F | 42°F | 52% | 31% | 12 h 50 min |
| April 4 | 57°F | 42°F | 51% | 31% | 13 h |
| April 5 | 57°F | 42°F | 51% | 31% | 13 h |
| April 6 | 57°F | 42°F | 51% | 31% | 13 h |
| April 7 | 57°F | 42°F | 51% | 30% | 13 h 10 min |
| April 8 | 58°F | 42°F | 51% | 30% | 13 h 10 min |
| April 9 | 58°F | 42°F | 51% | 30% | 13 h 10 min |
| April 10 | 58°F | 43°F | 51% | 30% | 13 h 20 min |
| April 11 | 58°F | 43°F | 50% | 29% | 13 h 20 min |
| April 12 | 58°F | 43°F | 50% | 29% | 13 h 20 min |
| April 13 | 59°F | 43°F | 50% | 29% | 13 h 30 min |
| April 14 | 59°F | 43°F | 50% | 28% | 13 h 30 min |
| April 15 | 59°F | 43°F | 49% | 28% | 13 h 30 min |
| April 16 | 59°F | 43°F | 49% | 28% | 13 h 40 min |
| April 17 | 59°F | 43°F | 49% | 27% | 13 h 40 min |
| April 18 | 60°F | 44°F | 48% | 27% | 13 h 40 min |
| April 19 | 60°F | 44°F | 48% | 27% | 13 h 50 min |
| April 20 | 60°F | 44°F | 48% | 27% | 13 h 50 min |
| April 21 | 60°F | 44°F | 47% | 26% | 13 h 50 min |
| April 22 | 61°F | 44°F | 47% | 26% | 14 h |
| April 23 | 61°F | 44°F | 47% | 26% | 14 h |
| April 24 | 61°F | 45°F | 46% | 25% | 14 h |
| April 25 | 61°F | 45°F | 46% | 25% | 14 h 10 min |
| April 26 | 62°F | 45°F | 45% | 25% | 14 h 10 min |
| April 27 | 62°F | 45°F | 45% | 24% | 14 h 10 min |
| April 28 | 62°F | 45°F | 45% | 24% | 14 h 20 min |
| April 29 | 63°F | 45°F | 44% | 24% | 14 h 20 min |
| April 30 | 63°F | 46°F | 44% | 23% | 14 h 20 min |
- Normal high
- 59°FApril average
- Normal low
- 43°FApril average
- Precipitation
- 3.18 inmonth total
- Days with precipitation
- 150.01 inch or more
- Daylight
- 12 h 50 min to 14 h 20 minApril 1 to April 30
- Days at 70°F or more
- 2
- Sunshine
- 63%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024233; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Seattle in April?
On a given April day the chance of 0.01 inch or more is 49% on average, highest around April 1 (52%). In all, 3.18 in falls on 15 days of a normal April.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024233.
How humid and windy is Seattle in April?
At 3 p.m. the normal temperature is 60°F with 52% relative humidity and a dew point of 42°F; at 6 a.m. it is 47°F with 84% humidity. The wind averages 8.0 mph, most often from the west-southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 47°F | 43°F | 84% | 6.7 mph | 18% |
| 9 a.m. | 52°F | 43°F | 72% | 8.0 mph | 15% |
| noon | 57°F | 43°F | 59% | 9.1 mph | 16% |
| 3 p.m. | 60°F | 42°F | 52% | 9.7 mph | 13% |
| 6 p.m. | 58°F | 42°F | 56% | 9.0 mph | 16% |
| 9 p.m. | 52°F | 42°F | 68% | 7.9 mph | 27% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024233. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for April in Seattle?
The warmest April temperature on this station's record (since 1945) is 89°F, on April 18, 2016; the coldest is 29°F, on April 21, 1951. The wettest April brought 6.53 in (1991); the snowiest, 2.3 inches (1972).
The April mean against the 1991-2020 normal of 51.3°F: 2021 53.0°F (+1.7), 2022 47.0°F (−4.3), 2023 48.5°F (−2.8), 2024 50.3°F (−1.0), 2025 52.1°F (+0.8), 2026 52.4°F (+1.1). 3 of 6 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 53.0°F | +1.7°F | 1.03 in |
| 2022 | 47.0°F | −4.3°F | 2.71 in |
| 2023 | 48.5°F | −2.8°F | 3.86 in |
| 2024 | 50.3°F | −1.0°F | 0.89 in |
| 2025 | 52.1°F | +0.8°F | 2.55 in |
| 2026 | 52.4°F | +1.1°F | 2.77 in |
Source: records: ACIS, station USW00024233; recent months: ACIS, station USW00024233. Records and recent months use complete months only.
How does April in Seattle compare across Washington?
Across the 96 places PlainClimate covers in Washington, April normal highs run from 53°F in Easton to 67°F in Pasco; Seattle's is 59°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.