Agency Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Agency Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Agency Lake today is 17°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 |
|---|---|---|---|
| JUN 23 | 19.0°C | 18.6°C | |
| JUN 24 | 19.3°C | 18.6°C | |
| JUN 25 | 19.3°C | 18.6°C | |
| JUN 26 | 19.4°C | 18.6°C | |
| JUN 27 | 19.4°C | 18.6°C | |
| JUN 28 | 18.8°C | 18.6°C | |
| JUN 29 | 18.6°C | 18.6°C | |
| JUN 30 | 17.7°C | 18.6°C | |
| JUL 1 | 22.5°C | 17.3°C | |
| JUL 2 | 22.5°C | 17.6°C | |
| JUL 3 | 22.5°C | 17.8°C | |
| JUL 4 | 22.5°C | 18.1°C | |
| JUL 5 | 22.5°C | 18.4°C | |
| JUL 6 | 22.5°C | 18.7°C | |
| JUL 7 | 22.5°C | 18.9°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 | 0°C | 2°C | 4°C |
| February | 0°C | 2°C | 4°C |
| March | 1°C | 5°C | 9°C |
| April | 5°C | 10°C | 15°C |
| May | 9°C | 15°C | 21°C |
| June | 14°C | 19°C | 23°C |
| July | 19°C | 23°C | 26°C |
| August | 18°C | 23°C | 27°C |
| September | 15°C | 19°C | 22°C |
| October | 9°C | 12°C | 15°C |
| November | 2°C | 6°C | 9°C |
| December | 0°C | 2°C | 5°C |
Agency Lake: Water Temperature by Location
Agency Lake: Weather Forecast
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Location & Local Information
Agency Lake, in south-central Oregon, is a shallow, broad water body whose surface temperatures vary notably with the seasons. In winter the lake commonly hovers near freezing to the low 40s °F (0–5 °C). Spring warming typically brings surface conditions into the mid-40s to around 60 °F (7–16 °C). By summer, shallow areas warm most, with common surface temperatures in the mid-60s to mid-70s °F (18–24 °C) and occasional stretches into the low 80s °F (about 27–28 °C) during heat waves. Fall sees a steady decline, often ranging from roughly 50 to 65 °F (10–18 °C) as the lake cools toward winter.
Swimming at Agency Lake is permitted and people do enter the water, especially at shoreline access points and recreation areas, but conditions warrant caution. The lake’s shallowness, aquatic vegetation and often-murky water can make swim conditions less comfortable and visibility poor, and cooler temperatures persist outside the warmest weeks. Additionally, the lake can experience water-quality issues such as algal blooms at times, so swimmers are advised to check current local advisories and use designated access areas; lifeguards are typically not provided, so personal safety precautions are important.