RIVERSIDE (CNS) - Temperatures will remain around seasonal averages Monday, Aug. 10 throughout Riverside County, but highs will gradually increase as the week progresses and a heat wave is expected to grip the region by this upcoming weekend. A slowly building ridge of high pressure over the southwestern United States will cause temperatures to rise from Wednesday through Sunday, according to the National Weather Service. The heat wave is expected to be similar to the record-breaking one that gripped Southern California two weekends ago, but current projections show it won't be quite as strong, forecasters said. Highs in the Coachella Valley are expected to reach 112 on Thursday, then climb to 116 on Sunday, according to the NWS. The mercury in the Riverside metropolitan area is expecte
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