If you go. 1  What: Mardi Gras Upriver. 2  When: Feb. 24-26. 3  Where: Downtown Jefferson. 4  Cost: Most activities are free. 5  Information: www.mardigrasupriver.com.
monterey bay, ca: Annual Weather Averages. August is the hottest month in monterey bay, ca with an average temperature of 18Â°C (64Â°F) and the coldest is January at 11Â°C (52Â°F) .onterey bay, ca: Annual Weather Averages. August is the hottest month in monterey bay, ca with an average temperature of 18Â°C (64Â°F) and the coldest is January at 11Â°C (52Â°F) .
No matter how cold it gets at night, the days can be counted on to warm up to at least 40 degrees. In fact, typically all but eight days a year at the waterfront city have highs of 50 degrees or more. Average number of days with low temperatures of 40 and 50 Â°F or cooler in Monterey. 40 Â°F.