After a warm El Nino rain the air can be very humid and still. In the nursery business we controlled greenhouse humidity, and of course heat, with exhaust fans to promote drying and fresh air in the green house.
So what can I do at home to improve drying conditions?
First, place plants in the sun after the rain event.
Second, after a rain event the air can be very still. During an El Nino I remember very high humidity and on some days fog scattered around after it rained. If these conditions exist after a long and/or a heavy rain event, it will not allow for proper/timely drying of soil in containers or in the ground. Bad things can happen to the roots not to mention above ground diseases. Soil evaporation, plant respiration and plant transpiration are minimal under those conditions. In 1983 during an El Nino period of rain after rain, an old nursery "salt" told me to get a fan and and point it at the plants to create artificial air movement. I have used a fan now on many occasions when the conditions warrant it. Once a breeze comes up, I turn it off unless the plants are very wet. Be sure to remove the fan before the next rain event.
For fertilizing or soil applied products for disease control, try to use dry products and let the next rain storm get them into the ground. Sometimes one cannot wait for the next rain so foliar feeding and foliarly applied disease products work nicely. For plants in the ground, the same applies when the soils are too saturated for soil drenches. My garden soil can literally back up with water after frequent, heavy rains, so foliar feeding kept my citrus alive and well until the roots recovered from the "drowning".
Hope this is helpful.