Lake Ashtabula — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Ashtabula, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Ashtabula today is 11.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| OCT 5 | 13.2°C | 11.0°C | |
| OCT 6 | 13.0°C | 11.0°C | |
| OCT 7 | 11.9°C | 11.0°C | |
| OCT 8 | 12.2°C | 11.0°C | |
| OCT 9 | 12.2°C | 11.0°C | |
| OCT 10 | 11.0°C | 11.0°C | |
| OCT 11 | 10.7°C | 11.0°C | |
| OCT 12 | 11.2°C | 11.0°C | |
| OCT 13 | 11.0°C | 11.8°C | |
| OCT 14 | 11.0°C | 11.7°C | |
| OCT 15 | 11.0°C | 11.7°C | |
| OCT 16 | 11.0°C | 11.6°C | |
| OCT 17 | 11.0°C | 11.6°C | |
| OCT 18 | 11.0°C | 11.6°C | |
| OCT 19 | 11.0°C | 11.5°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 1°C | 7°C | 12°C |
| February | 1°C | 8°C | 15°C |
| March | 1°C | 9°C | 17°C |
| April | 2°C | 11°C | 20°C |
| May | 7°C | 14°C | 21°C |
| June | 14°C | 18°C | 22°C |
| July | 17°C | 22°C | 28°C |
| August | 19°C | 24°C | 28°C |
| September | 16°C | 20°C | 23°C |
| October | 5°C | 11°C | 17°C |
| November | 3°C | 7°C | 10°C |
| December | 1°C | 5°C | 7°C |
Lake Ashtabula: Water Temperature by Location
Lake Ashtabula: Weather Forecast
October 13
October 14
October 15
October 16
October 17
Location & Local Information
Lake Ashtabula, the reservoir behind Baldhill Dam in North Dakota, experiences marked seasonal swings in water temperature. In spring (April–May) surface temperatures commonly range from roughly 40–60°F (4–16°C) as snowmelt and cool air keep the lake chilly. By early summer (June) the surface often warms to about 60–70°F (15–21°C), with peak midsummer (July–August) temperatures typically reaching 68–80°F (20–27°C) in open, shallow areas. Temperatures begin falling in fall (September–October) toward roughly 45–65°F (7–18°C). In winter the lake generally approaches freezing at 32°F (0°C) and commonly develops ice cover that keeps water temperatures at or below freezing for extended periods.
Swimming is generally permitted in Lake Ashtabula because it is a public recreational reservoir, and many visitors swim during the warmest weeks of July and August when surface temperatures are most comfortable. Conditions vary by location and season: shallow bays warm faster, while deeper or shaded areas remain cool. Visitors should note there may be limited or no lifeguard supervision, boat traffic, and occasional water-quality advisories after heavy runoff or algal blooms, so checking current local conditions and posted signs before swimming is advisable.