Make sure your car can handle the rain. Your tires should be properly inflated which allows them to have the most traction on the road and have enough tread.
It’s harder to drive safely in the rain because of limited visibility, especially at night so test your windshield wipers. They should clean the glass in one swipe, with no streaks.
If you’re on the highway or a road with several lanes, try to keep an open space on at least one side of your vehicle at all times.
Make gradual speed or steering changes, and start slowing your vehicle by taking your foot off the gas earlier than you normally would before gently squeezing the brake pedal.