A weak low-pressure system will slide inland to our north this week, strengthening the onshore flow with gusty west winds, cooler temperatures, and a chance of showers. As the onshore flow increases, the marine layer will deepen enough for some light rain and drizzle across the coastal and valley areas over the next few days, mainly during the late night and early morning hours. This moisture will bank up against the lower coastal slopes and could spill into the Big Bear Valley, especially Wednesday night or Thursday morning. This may generate a few light showers or flurries across our area with little accumulation expected. Highs will cool to the mid-60s today, dropping into the 50s on Wednesday and Thursday, while overnight lows generally cool to the 30s, but may dip into the upper 20s Wednesday night. If this low gets close enough, there could even be some elevated convection with a few thunderstorms possible, but at this time, it looks like the low stays too far north. High pressure will settle back over the region by the end of the week, bringing a nice warm-up through the weekend. Longer range continues to suggest above normal rainfall through the summer season, signaling we could have a fairly active monsoon pattern this year.