Hazy sunshine late this afternoon/early this evening will give way to more May Gray later tonight as the marine layer remains a primary player in our forecast. The low clouds and fog that develop late tonight by the coast will spread inland towards the adjacent valleys during the overnight hours. Temperature wise...overnight lows will cool down to the upper 40s and 50s by the coast, and the middle to upper 40s in the valleys.
Our forecast will change very little from Tuesday to Wednesday. We'll continue to see areas of low clouds and fog for the nighttime and morning hours. In addition to the marine layer, there will also be some mid and high level clouds, keeping skies on the partly to mostly cloudy side. Daytime highs will warm into the 60s and 70s by the coast, with 70s and 80s for the valleys.
By Thursday, a trough of low pressure moving down the west coast will form into a closed low and bring some pretty big changes to our area late this week. The low doesn't have a lot of available moisture by the time that it reaches our area, but it does have a decent amount of cold/unstable air. This will mean a slight chance for showers on Thursday and Saturday, with better chances for rain on Friday. For now, this doesn't appear to be a big rain event, with rainfall amounts ranging from nothing up to maybe .25". Temperatures will warm up Sunday and Monday behind the low...returning to normal by early next week.