American River (Folsom) water temp

This data the coastal American River (Folsom) water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current water temperature in American River (Folsom)

Water temperature in American River (Folsom) today is 77°F. Based on our historical data over a period of ten years, the warmest water in this day in American River (Folsom) was recorded in 2022 and was 84.2°F, and the coldest was recorded in 2018 at 71.6°F. Water temperature in American River (Folsom) is expected to drop to 75.9°F in the next 10 days. September average water temperature in American River (Folsom) is 75.2°F, the minimum temperature is 66.2°F, and the maximum is 89.6°F.

The swimming season in American River (Folsom) lasts from June to October. During those months, American River (Folsom) water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in American River (Folsom) in winter reaches 48.7°F, in spring 58.8°F, in summer the average temperature rises to 76.8°F, and in autumn it is 65.8°F.

American River (Folsom) water temperature now

Current temperature and weather

Data in a table show American River (Folsom) temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast American River (Folsom).

0-3 h	3-6 h	6-9 h	9-12 h
64.9°F	60.8°F	59.2°F	62.2°F

12-15 h	15-18 h	18-21 h	21-24 h
76.1°F	88.9°F	87.3°F	75°F

American River (Folsom) water temperature by month

These figures shows the average, minimum and maximum monthly water temperature in American River (Folsom). In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in American River (Folsom) on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in American River (Folsom)

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Our report for American River (Folsom) is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.