Greenwood Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Greenwood Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Greenwood 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 |
|---|---|---|---|
| JUL 14 | 18.7°C | 20.9°C | |
| JUL 15 | 21.0°C | 20.9°C | |
| JUL 16 | 19.6°C | 20.9°C | |
| JUL 17 | 19.6°C | 20.9°C | |
| JUL 18 | 20.8°C | 20.9°C | |
| JUL 19 | 21.2°C | 20.9°C | |
| JUL 20 | 21.5°C | 20.9°C | |
| JUL 21 | 21.5°C | 20.9°C | |
| JUL 22 | 20.9°C | 21.5°C | |
| JUL 23 | 20.9°C | 21.4°C | |
| JUL 24 | 20.9°C | 21.4°C | |
| JUL 25 | 20.9°C | 21.4°C | |
| JUL 26 | 20.9°C | 21.4°C | |
| JUL 27 | 20.9°C | 21.3°C | |
| JUL 28 | 20.9°C | 21.3°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 | 1°C | 3°C |
| February | 0°C | 1°C | 3°C |
| March | 0°C | 1°C | 3°C |
| April | 1°C | 4°C | 6°C |
| May | 3°C | 10°C | 16°C |
| June | 12°C | 17°C | 21°C |
| July | 14°C | 21°C | 27°C |
| August | 16°C | 23°C | 30°C |
| September | 14°C | 16°C | 19°C |
| October | 9°C | 13°C | 16°C |
| November | 0°C | 6°C | 11°C |
| December | 0°C | 0°C | 2°C |
Greenwood Lake: Water Temperature by Location
Greenwood Lake: Weather Forecast
July 22
July 23
July 24
July 25
July 26
Location & Local Information
Greenwood Lake in Minnesota follows the familiar seasonal pattern of shallow to medium-depth northern lakes, with surface temperatures changing noticeably through the year. In spring (April–June) waters commonly range from about 40–60°F (4–16°C) as the lake mixes and warms. During the peak of summer (late June–August) surface temperatures typically reach roughly 68–78°F (20–26°C), which is when the warmest swimming conditions occur. In early fall (September–October) temperatures fall back toward 45–60°F (7–16°C) as cooling progresses. By late fall and winter the surface approaches freezing, around 32°F (0°C), and under ice the water just below the cover is generally in the low 30s to upper 30s °F (0–3°C).
Swimming in Greenwood Lake is generally possible during the open-water season while the lake is ice-free and when local access permits it; Minnesota lakes are commonly used for recreation in summer because surface temperatures are comfortable and many shorelines allow entry. Swimming is not advisable during ice cover or when temperatures are very cold, and local advisories about water quality (such as blue‑green algae blooms), lifeguard availability, or posted rules should be checked before entering the water for safety.