East Branch Clarion River Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in East Branch Clarion River Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in East Branch Clarion River Lake today is 18.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 3 | 15.0°C | 18.5°C | |
| JUN 4 | 15.2°C | 18.5°C | |
| JUN 5 | 16.1°C | 18.5°C | |
| JUN 6 | 16.4°C | 18.5°C | |
| JUN 7 | 17.0°C | 18.5°C | |
| JUN 8 | 17.5°C | 18.5°C | |
| JUN 11 | 18.5°C | 18.4°C | |
| JUN 12 | 18.5°C | 18.4°C | |
| JUN 13 | 18.5°C | 18.4°C | |
| JUN 14 | 18.5°C | 18.4°C | |
| JUN 15 | 18.5°C | 18.4°C | |
| JUN 16 | 18.5°C | 18.4°C | |
| JUN 17 | 18.5°C | 18.4°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 | 0°C | 4°C | 6°C |
| February | 0°C | 4°C | 7°C |
| March | 0°C | 4°C | 7°C |
| April | 5°C | 10°C | 14°C |
| May | 8°C | 15°C | 22°C |
| June | 13°C | 19°C | 24°C |
| July | 21°C | 24°C | 27°C |
| August | 20°C | 25°C | 29°C |
| September | 18°C | 22°C | 25°C |
| October | 12°C | 15°C | 18°C |
| November | 4°C | 9°C | 13°C |
| December | 0°C | 5°C | 8°C |
East Branch Clarion River Lake: Water Temperature by Location
East Branch Clarion River Lake: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
East Branch Clarion River Lake tends to follow a typical temperate reservoir pattern: spring surface temperatures usually climb from roughly 40–60°F (4–16°C) as snowmelt and cool rains give way to warmer days. In summer, surface waters are warmest, commonly ranging between about 65–78°F (18–26°C) on sunny afternoons, though cooler pockets can persist near inlets and deeper channels. Early fall sees a steady cooling to roughly 55–70°F (13–21°C) as air temperatures drop and stratification breaks down. In winter the lake approaches freezing; surface temperatures often sit near 32–40°F (0–4°C) where open water exists, and portions may ice over depending on seasonal severity.
Swimming is generally allowed at Corps-managed reservoirs like East Branch Clarion River Lake, but opportunities are shaped by safety and management considerations: there are few if any staffed lifeguard beaches, water levels and currents near the dam or inlets can be hazardous, and cold-water shock is a real risk outside mid-summer. Recreational use is permitted where posted, but visitors should follow signs, avoid dangerous areas, wear flotation when appropriate, and be prepared for rapidly changing temperatures and submerged hazards. Always check local postings and the managing agency for any seasonal restrictions before entering the water.