High pressure positioned over the Four Corners will continue to lift north into the first half of the work week. This is going to warm temperatures through Tuesday, with many locations 10 degrees above July normals. Afternoon highs will be in the mid and upper 90′s in the valley’s and Siskiyou County, and the mid to upper 80′s on the East Side. A longwave trough will then move in the from the East on Wednesday, bringing in a cooler air mass.
Through the end of the week temperatures will be on a steady decline, dropping to more seasonal values. Cloud cover should remain sunny to mostly sunny across the entire viewing area Monday through Friday, with the exception of the Coastline. Partly sunny conditions through the middle of the week will move in as the cooler air mass settles. Light drizzle is possible across northern coastal sections Thursday and Friday.
The moisture remains low this week, so the thunderstorm threat is going to be minimal. The most instability will be present on Thursday and this could bring a stray thunderstorm to Siskiyou County or the Klamath Basin.
Have a great week!