Thursday, May 21, 2009 | 6:16 a.m.
Temperatures will remain above the normal upper 80s to low 90s accompanied by clouds in the Las Vegas Valley through the Memorial Day weekend.
The daytime high is expected to reach 96 to 98 degrees today and that pattern will remain into the weekend, the National Weather Service says.
Lows at night have stayed in the lower 70s and are expected to stick around as well, according to the weather service.
The passing clouds and moisture plume streaming across the valley from the south and southeast offer an unusual feature for this time of year. The moist air normally comes in mid July when the Southwestern monsoons bring afternoon and evening thunderstorms.
At this time of year the air is so dry that most of the storm activity will remain north of Las Vegas or to the east. Forecasters say that the best chance of a thunderstorm in the next few days will be in the mountainous areas of Southern Nevada.
Each morning should start with fairly clear skies followed by breezy to windy conditions bringing passing clouds into the area, the weather service says.