Last updated: June 24, 2025
In April, the average temperature in Washington, United States hovers around 5°C (42°F). Expect a wide range of conditions, with minimum temperatures dipping to -9°C (17°F) and maximums reaching up to 25°C (78°F). This month also brings 117 mm (4.6 in) of precipitation over approximately 14 days, contributing to an average humidity level of 84%. Stay prepared for a mix of chilly days and warmer spells!
In April in Washington, the average temperature is 5°C (42°F). Maximums can reach 25°C (78°F), and minimums can be as low as -9°C (17°F). Be prepared for a wide range of temperatures during your travels, packing layers to ensure comfort in both warm and chilly conditions.
In Washington in April, the precipitation amount is 117 mm (4.6 in) spread over 14 days.
In Washington in April, humidity is 84%. With an average temperature of 5°C (42°F), this humidity feels like a thick blanket wrapping around you, making every step feel heavier while traveling.
In Washington in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to 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 | -7°C (19°F) | 77 mm (3.0 inches) | 89% | low |
February Weather | -6°C (22°F) | 80 mm (3.2 inches) | 88% | moderate |
March Weather | -2°C (29°F) | 71 mm (2.8 inches) | 86% | moderate |
April Weather | 5°C (42°F) | 117 mm (4.6 inches) | 84% | very high |
May Weather | 12°C (55°F) | 96 mm (3.8 inches) | 76% | very high |
June Weather | 17°C (64°F) | 97 mm (3.8 inches) | 72% | very high |
July Weather | 20°C (69°F) | 140 mm (5.5 inches) | 66% | very high |
August Weather | 19°C (67°F) | 98 mm (3.9 inches) | 64% | very high |
September Weather | 15°C (60°F) | 71 mm (2.8 inches) | 72% | high |
October Weather | 9°C (48°F) | 141 mm (5.6 inches) | 81% | moderate |
November Weather | 1°C (33°F) | 104 mm (4.1 inches) | 87% | moderate |
December Weather | -5°C (24°F) | 88 mm (3.4 inches) | 84% | low |