We've been warming today under a sunny sky, and the heat will only get more intense going forward. Today we warmed back to seasonal averages, and it will get much hotter through the weekend and beyond. Tonight we can expect a clear sky and warmer overnight lows due to breezes and a warming airmass. Lows will range from the 40s in the mountains to the 50s and 60s in the foothills and valley. Wednesday will begin clear and mild and we can expect more clouds in the sky by the afternoon. The clouds will do nothing to keep us cool, however, as we climb well above average for mid-June. Highs Wednesday will range from the 80s and lower 90s in the mountains and foothills to the upper 90s and lower 100s for the valley.
The Excessive Heat Warning has been expanded to include the mountains, and it will also begin Wednesday rather than Thursday. Trinity County has a Heat Advisory Thursday, which isn't as severe, along with an Excessive Heat Watch for Friday. Northerly breezes will also increase the next couple days which is far from ideal regarding fire danger, but it will be mainly in the valley, and mostly in the morning. Highs will peak Thursday and Friday, with a modest cooling through Monday, and perhaps a little better cooling next Tuesday. Overnight lows will continue to warm well above average before cooling slightly next week. Valley highs will be mainly in the 105 to 112 degree range from Thursday to Sunday before cooling slightly next week.