It will often happen that travelers planning to come to Colombia or already in Colombia are disheartened by the forecast they see on their smartphone apps thinking it's going to be a washed out day or vacation, it says rain every day!
Although it may of course turn out to be a rainy day, best pay no heed to the forecasts please, we pretty much consider them useless here.
The weather here is famous for not only changing drastically from one day to the next but during the same day itself.
What happens with the forecasts is that we are down in the tropics so chances are it might rain somewhere in the area at some time in the next 24 hours, even if it's a light drizzle or heavy shower, but they tend to be patchy and short lived, it certainly does not mean that it's going to pour everywhere all day every day as the forecasts make it look.
It's as if those responsible for the weather forecast are playing it safe, so don't let the forecasts get in your way of planning and booking your days of outdoor fun, chances are way high that rain will not get in your way; you'll probably not see any at all, so go outdoors and have some fun!