TONIGHT: We will see mostly clear skies with winds out of the North at 5 to 10 and gusts up to 15 mph. Some light fog will form after mid night with overnight lows in the low to mid 50s. Little to no chance of showers.
TOMORROW: We will start off with mostly sunny skies with light morning fog and light winds out of the Northwest at 5 to 10 mph and morning temperatures in the mid to low 50s. As we move into the afternoon high pressure ridging will continue to expands over the region as a surface thermal low develops to shoot temperatures into the triple digits. This will bring mostly sunny skies and warmer afternoon highs in the upper 90s to low 100s with light winds out of the North at 5 to 10 and gusts up to 25 mph.
LATE WEEKEND: Very hot and dry conditions today through Sunday will be followed by a chance for thunderstorms late Sunday into Monday. This magnitude and duration of hot weather in June has not been observed in the Rogue Valley since the 1960s and will pose a threat to public safety. Additionally, the thunderstorms that follow the heat could result in new wildfires in the forecast area. The Southern Oregon coast near Brookings, which has experienced temperatures in the 80s the past few days, is now seeing more normal temperatures in the 60s as a coastal surge of cooler air and clouds moves south to north. It will take until Sunday to really cool down in the North Bend area as the surge slowly moves up the coast. We have increased temperatures for North Bend for Saturday based on the latest guidance and the understanding that guidance can underforecast high temperatures in these highly anomalous situations. For most inland areas, the heat will peak on Saturday. Daily Record high temperatures are possible for several locations on Saturday and Sunday. Substantial cooling won`t occur until Monday when readings dip to only 10 degrees above normal, compared to the 25 degrees above normal that are expected over the weekend. Heat Advisories and Excessive Heat Warnings have been issued for most inland areas west of the Cascades for the weekend. We want to emphasize some safety tips because over the past 30 years, more weather-related fatalities have occurred due to heat compared to any other weather. As is typical with any waning of a heat wave, the upper ridge of high pressure pushes east, moisture and instability move into the forecast area, and thunderstorms are possible as the area transitions to cooler conditions. This happens on Sunday and Monday as moisture and energy are introduced into the forecast area from the south and west. Of particular interest is upper level instability present on Sunday night from the Cascades westward, bringing the potential for nighttime thunderstorms. Often storms at night have less rainfall than afternoon storms, and this can result in a better chance for new fire starts. Fire Weather Watches have been issued to account for the chance of new fire starts due to lightning. Monday will feature gusty west winds, especially east of the Cascades, as the cooler air mass enters the forecast area. Temperatures will actually reach near normal readings by Tuesday and this should continue for most of the week.
Today's Record Temperatures