Dillon Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Dillon Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Dillon Lake today is 21.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 |
|---|---|---|---|
| SEP 14 | 21.9°C | 27.0°C | |
| SEP 15 | 22.4°C | 27.0°C | |
| SEP 16 | 21.9°C | 27.0°C | |
| SEP 17 | 20.7°C | 27.0°C | |
| SEP 18 | 20.3°C | 27.0°C | |
| SEP 19 | 21.7°C | 27.0°C | |
| SEP 20 | 21.4°C | 27.0°C | |
| SEP 21 | 21.9°C | 27.0°C | |
| SEP 22 | 27.0°C | 21.8°C | |
| SEP 23 | 27.0°C | 22.1°C | |
| SEP 24 | 27.0°C | 22.3°C | |
| SEP 25 | 27.0°C | 22.6°C | |
| SEP 26 | 27.0°C | 22.9°C | |
| SEP 27 | 27.0°C | 23.2°C | |
| SEP 28 | 27.0°C | 23.4°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 | 5°C | 8°C |
| February | 0°C | 5°C | 9°C |
| March | 1°C | 7°C | 12°C |
| April | 6°C | 14°C | 21°C |
| May | 13°C | 19°C | 24°C |
| June | 18°C | 23°C | 28°C |
| July | 19°C | 25°C | 30°C |
| August | 22°C | 27°C | 32°C |
| September | 21°C | 27°C | 33°C |
| October | 15°C | 19°C | 22°C |
| November | 5°C | 11°C | 16°C |
| December | 1°C | 6°C | 9°C |
Dillon Lake: Water Temperature by Location
Dillon Lake: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Dillon Lake in Ohio follows the typical seasonal pattern of midwestern reservoirs. Surface temperatures in winter hover around freezing, roughly 32–40°F (0–4°C) with ice forming in sustained cold spells. In spring the lake usually warms from about 40–60°F (4–15°C) as air temperatures rise and runoff mixes into the basin. By summer, surface readings commonly reach the mid 60s to low 80s Fahrenheit, roughly 18–28°C, although shallow bays can warm faster and occasional heat waves can push surface temps a few degrees higher. In autumn the water cools again, falling through the 50s to 40s°F (10–4°C) as nights lengthen. Depth, seasonal stratification, inflow and recent weather all influence these ranges, so local conditions can vary from one year to the next.
Swimming at Dillon Lake is generally allowed in designated areas managed by the local authorities, but unrestricted wading or swimming outside those spots is often discouraged for reasons of safety and water-quality protection. Reservoirs can have sudden drop-offs, underwater hazards and boat traffic, and agencies may restrict swimming to beaches or roped-off zones to reduce risks and protect drinking-water sources or habitat. Always check current posted rules and advisories before entering the water.