SAN FRANCISCO (KRON) -- Fall weather has arrived in the Bay Area at last, with Tuesday morning bringing some of the coldest temps to the region since May. Tuesday's forecast is for clear skies. However, according to the National Weather Service, Tuesday is the only day projected to stay dry this week. According to KRON4 Weather Reporter Gayle Ong, a chance of widespread light rain will arrive in the North Bay Wednesday afternoon. Chances for rain will gradually increase across the Bay Area Wednesday evening into Thursday morning -- Halloween. More than 10 suspects attempt to break into sneaker shop in Daly City: police Showers, according to Ong, are expected to taper off late Thursday morning, but a chance of drizzly conditions for trick-or-treaters remains for the evening. Halloween temps across the Bay Area look set to remain on the cool side, according to the NWS. Graphic: National Weather Service There is also a chance of rain across the region, with wet conditions possible in Napa, San Rafael, San Francisco, Concord and Santa Rosa in particular. Chances for rain decrease overnight Thursday into Friday. However, according to Ong, the storm door is set to remain open through the end of the week with another chance of rain on Saturday. Colder temps are also expected to continue through Saturday, according to the NWS. Bay City News contributed to this report.