Forecast for tonight:  Mostly cloudy, then gradually becoming clear, with a low around 38. North northwest wind 5 to 15 mph, with gusts as high as 30 mph.  Tuesday:  Increasing clouds, with a high near 54. West northwest wind 5 to 10 mph.  Tuesday Night:  Partly cloudy, with a low around 36. North northwest wind 5 to 15 mph.