WASHINGTON — Even light rain significantly increases your risk of a fatal car crash, a new study finds.

The wetter the roads, the deadlier they become, with rain, snow and ice increasing the risk of deadly car crashes by 34 percent, according to a study this week in the Bulletin of the American Meteorological Society.

Light rain — “We’re talking a drizzle, just at the point where you might consider taking an umbrella out,” said study lead author Scott Stevens — increased the fatal crash risk by 27 percent.

With moderate rain the risk of fatal car crashes is 75 percent more than in nice weather, Stevens said.