The heavy rain San Diego County received in early January might turn out to be the only significant precipitation the region gets this month, the National Weather Service says. There is some storm activity in and near the Gulf of Alaska, which regularly generates winter storms that drench cities suc h as Seattle, Portland and San Francisco. Some of those systems sink down the West Coast, bringing rain to greater San Diego. But the weather service says there’s a huge ridge of high pressure in the Pacific Northwest that’s preventing storms from taking a southern track. On the upside, San Diego has already recorded 3.08 inches of precipitation this month, about 1.11 inches more than average. San Diego will continue to be unseasonably warm. The city’s daytime high will be 72 on Monday, 73 on Tuesday, 71 on Wednesday and 68 on Thursday, when the marine layer is expected to be thicker than it has been for the past couple of weeks. The seasonal high is 66. So far, the average monthly temperature in San Diego is 59.6, which is 1.5 degrees above average. ...read more read less