June 18, 2009 One of the stranger Junes in recent memory continues this weekend after a very fleeting glimpse of the summer to come today. A ridge of high pressure briefly builds over the Sierra this morning, bringing seasonably warm and even above normal-temperatures today before breaking down on Friday. Look for highs in the 70s today around the lake and into the 60s at the mountain passes, while Reno hits 80 for the first time this month and Sacramento pushes into the 90s. The threat of thunderstorms is slight, but moisture in the air from the front that passed through earlier this week could trigger a few showers along the crest, especially south of Tahoe. That will be it, though. Friday will carry through with some residual warmth but by Friday afternoon or evening another trough of low pressure will be heading our way, bringing cooler temperatures and a renewed threat of widespread showers and thunderstorms. High temperatures will drop another 5 to 10 degrees and winds should pick up, with gusts around 30 mph. Saturday and Sunday should also be cool but drier, before high pressure begins to build again early next week. By Tuesday or Wednesday temperatures should be near normal for this time of year. Tahoeloco.com