Newman Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Newman Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Newman Lake today is 20.5°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 |
|---|---|---|---|
| JUN 23 | 20.8°C | 19.5°C | |
| JUN 24 | 20.8°C | 19.5°C | |
| JUN 25 | 20.8°C | 19.5°C | |
| JUN 26 | 20.8°C | 19.5°C | |
| JUN 27 | 20.8°C | 19.5°C | |
| JUN 28 | 20.7°C | 19.5°C | |
| JUN 29 | 20.6°C | 19.5°C | |
| JUN 30 | 20.6°C | 19.5°C | |
| JUL 1 | 18.5°C | 20.4°C | |
| JUL 2 | 18.5°C | 20.3°C | |
| JUL 3 | 18.5°C | 20.2°C | |
| JUL 4 | 18.5°C | 20.1°C | |
| JUL 5 | 18.5°C | 20.0°C | |
| JUL 6 | 18.5°C | 19.9°C | |
| JUL 7 | 18.5°C | 19.8°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 | 5°C |
| February | 1°C | 3°C | 6°C |
| March | 2°C | 5°C | 7°C |
| April | 2°C | 7°C | 12°C |
| May | 9°C | 14°C | 19°C |
| June | 15°C | 20°C | 24°C |
| July | 14°C | 19°C | 23°C |
| August | 21°C | 24°C | 26°C |
| September | 15°C | 19°C | 23°C |
| October | 10°C | 14°C | 17°C |
| November | 5°C | 9°C | 13°C |
| December | 1°C | 5°C | 9°C |
Newman Lake: Water Temperature by Location
Newman Lake: Weather Forecast
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July 4
July 5
Location & Local Information
Newman Lake in eastern Washington experiences a clear seasonal pattern in surface water temperature. In winter the lake commonly approaches near-freezing conditions, roughly 32–40°F (0–4°C), while spring warming moves temperatures into about 45–60°F (7–16°C). By midsummer surface readings often reach the warmest range, typically around 65–80°F (18–27°C) on sunny, calm days, with shallow bays heating faster than deeper spots. In autumn the water cools back toward 50–60°F (10–16°C) as air temperatures drop. Local factors such as depth, wind, and sunlight can cause short-term variation; shallow nearshore areas and sheltered coves usually register higher temperatures than the main basins.
Swimming in Newman Lake is generally permitted and commonly practiced during the warm months because summer surface temperatures become comfortable for recreational use. There are public and private access points where people swim, but beaches are often unguarded and users should consider standard safety precautions. Occasional water-quality issues, including blue-green algae blooms or runoff after heavy rains, can prompt advisories that make swimming inadvisable; checking current local notices and observing visible conditions is advisable. In colder seasons the lake is too cold for typical recreational swimming and poses hypothermia risk even on milder days.