Last updated: June 24, 2025
In April, the average temperature in Washington, United States hovers around 12°C (55°F). However, be prepared for a range of temperatures—minimums can dip to -4°C (25°F), while maximums can soar up to 30°C (86°F). Expect 143 mm (5.6 in) of precipitation spread over 13 days, contributing to an average humidity of 86%, creating a distinctly wet and humid atmosphere.
In April in Washington, the average temperature is 12°C (55°F). Maximums can reach 30°C (86°F), and minimums can drop as low as -4°C (25°F). Be prepared to experience a wide range of temperatures during your travels!
In Washington in April, the precipitation amount is 143 mm (5.6 in) over a span of 13 days.
In Washington in April humidity is 86%. With an average temperature of 12°C (55°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers while traveling.
In Washington in April, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Washington.
UV Risk Categories
Weather in Washington varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Washington, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 1°C (34°F) | 91 mm (3.6 inches) | 88% | moderate |
February Weather | 4°C (39°F) | 125 mm (4.9 inches) | 88% | moderate |
March Weather | 7°C (46°F) | 115 mm (4.5 inches) | 88% | high |
April Weather | 12°C (55°F) | 143 mm (5.6 inches) | 86% | very high |
May Weather | 18°C (65°F) | 147 mm (5.8 inches) | 82% | very high |
June Weather | 22°C (72°F) | 153 mm (6.0 inches) | 84% | very high |
July Weather | 25°C (77°F) | 112 mm (4.4 inches) | 82% | very high |
August Weather | 24°C (75°F) | 123 mm (4.8 inches) | 73% | very high |
September Weather | 21°C (70°F) | 104 mm (4.1 inches) | 73% | very high |
October Weather | 15°C (60°F) | 113 mm (4.4 inches) | 81% | high |
November Weather | 7°C (45°F) | 82 mm (3.2 inches) | 89% | moderate |
December Weather | 4°C (39°F) | 117 mm (4.6 inches) | 86% | moderate |