The water temperature for the Gulf of Mexico (West Coast) ranges from the high 50s to high 60s. The Atlantic Ocean(East Coast) waters average mid-to-high 50s from Central Florida north. The beaches to the south - West Palm Beach, Miami and The Keys - are always several degrees warmer than those in North Florida. Source: http://goflorida.about.com/od/allaboutflorida/a/january.htm
This web site has a map of the USA with average ground water temperatures: http://homerepair.about.com/od/plumbingrepair/ss/tankless_hwh_5.htm Good luck.
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The water temperature in late March usually average between 70 to 74 degrees
http://www.nodc.noaa.gov/dsdt/cwtg/egof.html
It fluctuates from Summer 850 to 750 in the Winter. Regards www.rentalo.com
The average groundwater temperature in Jacksonville, Florida is typically around 68-70 degrees Fahrenheit. However, this can vary depending on the specific location and depth of the groundwater source.
In a freshwater marsh, the type of weather can vary depending on the specific location and season of this biome. For example, freshwater marshes or wetlands found in Florida, the tropic zone, and the Arabian Peninsula can have different temperature ranges. However, in summer months, the average temperature in this biome type can vary between 65 to 75 degrees Fahrenheit. In winter, the average temperature range can be between 35 to 45 degrees Fahrenheit. Freshwater marshes also have wet seasons.
Water temperatures in August are in the lower 70s. See this page for monthly air and water temperatures: www.ocbound.com/delaware/plan/weather.htm
The average ocean water temperature of San Francisco Bay ranges from around 52°F (11°C) in the winter months to about 60-65°F (15-18°C) in the summer months.
The average water temperature in Wildwood Crest, NJ ranges from around 40°F in the winter months to about 75-80°F in the summer months. The exact temperature can vary depending on the time of year and weather conditions.
The average surface water temperature of the Great Lakes varies throughout the year. In summer, temperatures can range from the low 60s to low 70s Fahrenheit, while in winter, they can drop below freezing. The average annual temperature for the Great Lakes hovers around 45-50 degrees Fahrenheit.
Average temperature is 60C