Highs Monday were a few degrees above average, for the most part, but over the next few days, temperatures will be approaching triple digits. An area of low pressure brought a few showers to extreme southeastern Modoc County earlier on Monday, but as that low continues to exit the area, high pressure builds in from the west.
We have been anticipating this warm up for about a week now, and it looks to bring temperatures about ten degrees above average by Wednesday. Fortunately, this is only a short-lived hot spell. A cold front passing towards the beginning of the weekend will be dropping temperatures back down to the middle 80′s. It does bring with it a few showers on Saturday, but the rain chances are gone by Sunday. Labor Day Monday will be mostly sunny with temperatures still fairly comfortable – in the upper 80′s for highs.
As far as the smoke and air quality concerns in northern California, easterly winds higher in the atmosphere has been pushing the smoke towards western Siskiyou and Del Norte Counties. This is giving central Siskiyou County a break from the smoke and allowed air quality back in the “good” category. However, winds aloft will be shifting by the end of the week, blowing more from the west southwest. This will push the smoke back towards southern Oregon by the weekend.
Chief Meteorologist Kate McKenna