What happens when it rains?
There is no escaping the fact that getting wet on a cycle ride can be unpleasant!
But as a wise person once said...
"There is no such thing as bad weather, only unsuitable clothing!"
With that in mind, here are some of the things to consider...
Consider using multiple layers of clothing. This could include a base layer, a mid-layer and an outside layer. Any of these could be removed depending on the weather conditions.
Keep an eye on the weather forecast for the temperature and likelihood of rain
When the temperature is below 10C I personally use a base layer, a cycling jersey and a light cycling jacket. If light rain is expected I carry a very thin water-resistant jacket in my bag. When heavier rain is expected I have a thicker, more water-resistant jacket with one or more layers underneath, dependent on the temperature.
Not to be underestimated to keep you warm and cosy. Inexpensive.
These can be found in various thicknesses. Some are very thick and designed for the toughest winter conditions whereas others add an extra layer for just slightly toastier feet.
These can be bolted on the bike or clip-on. Even very good designs can be inexpensive. Highly recommended to reduce a wet bottom and wet feet. Also helps protect the bike.
Consider using glasses to protect your eyes from flying insects. They can be tinted or clear.