Hello everyone. It is a rainy Monday in July and this could lead to some fog overnight. Did you know that September has the most foggy nights of any month in our area? There is a good reason for that. As humid summer air lingers, the nights are getting longer by September so the air has longer to cool overnight. The cooling of the humid air squeezes out (condences) the moisture out of the air to give us a heavy dew and fog.
For this Monday night in July, the air will be very humid following rain. While the night isn't as long as it is later in the year, it will start out cooler because of the rain cooled air. This will give us a chance of fog. If the summer sky clears overnight, the chance of fog will increase. Yes, increase. A clear sky above allows the air near the ground to cool more as heat radiates upward away from earth. The more the air cools, the better chance for moisture condensing out into fog.
Expect some early morning fog Tuesday morning unless clouds continue over the area.
Phillip Williams
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