Folsom Lake water temp
This data the coastal Folsom Lake 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 Folsom Lake
Water temperature in Folsom Lake today is 77°F. Based on our historical data over a period of ten years, the warmest water in this day in Folsom Lake was recorded in 2022 and was 84.2°F, and the coldest was recorded in 2018 at 71.6°F. Water temperature in Folsom Lake is expected to drop to 75.9°F in the next 10 days. September average water temperature in Folsom Lake is 75.2°F, the minimum temperature is 66.2°F, and the maximum is 89.6°F.
The swimming season in Folsom Lake lasts from June to October. During those months, Folsom Lake water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Folsom Lake 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.
Folsom Lake water temperature now
| September 5, 2025 |
|---|
| today temp |
| 77°F |
| September 4, 2025 |
|---|
| yesterday temp |
| 78.8°F |
Current temperature and weather
Data in a table show Folsom Lake temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast Folsom Lake.
| 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 |
You may also be interested in other sections of our site for Folsom Lake: Sunrise and Sunset
Folsom Lake water temperature by month
These figures shows the average, minimum and maximum monthly water temperature in Folsom Lake. 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 Folsom Lake 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
| Month | Avr | Min | Max | |
|---|---|---|---|---|
| January | 47.8°F | 41°F | 55.4°F | cold |
| Water temperature in Folsom Lake in January | ||||
| February | 49.1°F | 42.8°F | 55.4°F | cold |
| Water temperature in Folsom Lake in February | ||||
| March | 51.8°F | 37.4°F | 66.2°F | cold |
| Water temperature in Folsom Lake in March | ||||
| April | 58.5°F | 46.4°F | 68°F | cold |
| Water temperature in Folsom Lake in April | ||||
| May | 66.2°F | 55.4°F | 75.2°F | cold |
| Water temperature in Folsom Lake in May | ||||
| June | 73.8°F | 64.4°F | 82.4°F | warm |
| Water temperature in Folsom Lake in June | ||||
| July | 78.1°F | 69.8°F | 86°F | hot |
| Water temperature in Folsom Lake in July | ||||
| August | 78.8°F | 68°F | 89.6°F | hot |
| Water temperature in Folsom Lake in August | ||||
| September | 75.2°F | 66.2°F | 89.6°F | warm |
| Water temperature in Folsom Lake in September | ||||
| October | 67.5°F | 57.2°F | 80.6°F | cold |
| Water temperature in Folsom Lake in October | ||||
| November | 55°F | 46.4°F | 64.4°F | cold |
| Water temperature in Folsom Lake in November | ||||
| December | 49.1°F | 42.8°F | 53.6°F | cold |
| Water temperature in Folsom Lake in December | ||||
Chart monthly average water temperature in Folsom Lake
