From the National Weather Service: National Weather Service wrote: This Afternoon: A chance of rain after 2pm. Cloudy, with a high near 59. Southeast wind between 11 and 14 mph. Chance of precipitation is 40%. Tonight: Rain, mainly after 9pm. Patchy fog after 9pm. Low around 52. Southeast wind at 10 mph becoming southwest. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible. Saturday: Showers likely, with thunderstorms also possible after 2pm. Patchy fog before 9am. Otherwise, cloudy, with a high near 67. Light wind becoming west between 10 and 13 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. I read this as it actually being a higher probability that tonight gets rained out than tomorrow.