When wet, light-colored bras, tops, and bottoms become see-through, so wear darker colors in the rain. Invest in a lightweight, waterproof shell jacket (not necessarily one targeted to runners) to keep you dry on chilly, wet runs and other rainy day activities.
If you have dark skin, you may want to wear a white shirt under your bra to avoid showing through. If you have lighter skin, there's no need for this step. White clothing also shows up better against the background of other objects (like the sky) than black clothing does, so it's easier to navigate when you're getting started or trying to find your way back home after a run.
Finally, if it's cold out when you go running, wear shorts instead of pants. This will help keep you warm on those frigid mornings or evenings when you don't feel like wearing shorts. Of course, you can wear shorts even in the summer if you want to show off your muscles or go for a swim once in a while!
Shoes that are properly fitted will help keep your feet dry during runs with heavy rainfall. If you get blisters, take off your shoes for a few minutes so they can air out and relieve some of the pressure.
Finally, try not to walk too quickly through puddles.
Here's how to transform a rainy run into something you'll actually look forward to.
A rain jacket is essential for staying dry while walking in the rain. Look for a breathable fabric that will aid in the reduction of sweat. A decent rain jacket should also feature a strong hood that fits well and can be tightened to keep the rain out. Raincoats are available in a variety of retail, sporting goods, warehouse, and outdoor stores.
If you are looking for something a little more affordable, there are many waterproof jackets available online and at specialty clothing retailers. These can serve as a good substitute for an actual raincoat.
Of course, the best solution is to avoid being outside when it starts raining. But if you must go out, take an umbrella or cover yourself with your coat. It will help keep you warm too!
Simply wear an inexpensive poncho or rain kilt to keep your pants dry. For years, I've carried the same Frogg Toggs Ultralight poncho in my bag. They're inexpensive, and you won't wind up sweating like a hog as a result. Rain kilts are more windproof, but they do not cover your upper body. If it's just going to be light rain, then this isn't an issue, but if it's heavy rain or snow, you'll want something that will keep all of that out of your bag.
I now carry these Patagonia Torrentshells instead. While they aren't cheap (about $100), they are very high quality and extremely durable. They block out water completely, don't let any through, and are designed to last. I also like that they have a drawstring at the waist so they fit properly.
If you live in an area that gets a lot of snow, you should get something similar to this TekLite SnowKilt. It's made of nylon and has two side pockets for your hands when they need washing. This would be useful if you were ice climbing or hiking in a remote area where there was no chance of running into anyone else.
Finally, if it's really raining hard and you need to keep your clothes on, you could always wear plastic bags over your head. Of course, this would only be suitable for small children or people who don't mind looking stupid.
A wind and water-resistant jacket or vest should be your outer layer. Wearing a waterproof rain slicker will trap moisture and heat. Also, avoid cotton (especially your socks) since it absorbs moisture. By cutting armholes and a neck hole in a large garbage bag, you may build a rain poncho. For a cheaper alternative, use clear plastic bags from the grocery store.
As for what to put on your body, wear clothes that are breathable but also water-resistant. Avoid cotton since it holds moisture and becomes heavy when wet; instead, choose synthetic materials such as polyester or nylon.
Finally, consider your environment when choosing where to run. If it's very hot outside or not humid, a T-shirt and shorts might be enough. But if it's raining or there is snow on the ground, you'll need something more protective against the elements.