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) .
How Often Monterey Has Cold Temperatures. At night, the temperature in Monterey can drop into the 30s Fahrenheit (below 4 Â°C) during late fall, winter and early spring.But only a couple of nights a year on average reach freezing.ow Often Monterey Has Cold Temperatures. At night, the temperature in Monterey can drop into the 30s Fahrenheit (below 4 Â°C) during late fall, winter and early spring.