JACKSONVILLE, Fla -- Some of the hottest temperatures of the year so far Friday with highs around 90 degrees inland and low to mid 80s at the coast. Humidity will slowly increase and could be high enough for an isolated afternoon shower or storm as the sea breeze moves west of I-95. Most places will stay dry Friday. By Saturday humidity will be high enough to trigger scattered afternoon thunderstorms as temperatures again approach 90 degrees. Rainfall coverage Saturday should be less than half the area but with some brief downpours and gusty winds. Rain and thunderstorms will occur just about everywhere -- at one time or another -- Sunday into Sunday evening.