Medicine Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Medicine Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Medicine Lake today is 24.7°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 | 21.8°C | 20.5°C | |
| JUL 15 | 22.1°C | 20.5°C | |
| JUL 16 | 22.1°C | 20.5°C | |
| JUL 17 | 21.3°C | 20.5°C | |
| JUL 18 | 24.8°C | 20.5°C | |
| JUL 19 | 25.2°C | 20.5°C | |
| JUL 20 | 25.3°C | 20.5°C | |
| JUL 21 | 25.0°C | 20.5°C | |
| JUL 22 | 20.5°C | 24.5°C | |
| JUL 23 | 20.5°C | 24.3°C | |
| JUL 24 | 20.5°C | 24.1°C | |
| JUL 25 | 20.5°C | 23.9°C | |
| JUL 26 | 20.5°C | 23.7°C | |
| JUL 27 | 20.5°C | 23.4°C | |
| JUL 28 | 20.5°C | 23.2°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 | 4°C |
| February | 0°C | 1°C | 4°C |
| March | 0°C | 2°C | 5°C |
| April | 2°C | 7°C | 11°C |
| May | 8°C | 14°C | 19°C |
| June | 13°C | 18°C | 22°C |
| July | 14°C | 21°C | 27°C |
| August | 17°C | 23°C | 28°C |
| September | 16°C | 19°C | 21°C |
| October | 7°C | 12°C | 17°C |
| November | 2°C | 6°C | 10°C |
| December | 0°C | 2°C | 5°C |
Medicine Lake: Water Temperature by Location
Medicine Lake: Weather Forecast
July 22
July 23
July 24
July 25
July 26
Location & Local Information
Medicine Lake in northeastern Montana is a prairie wetland lake whose water temperatures change a lot through the year. In winter the surface typically sits near freezing, roughly 33–40°F (0.5–4°C) under ice and in early thaw. Spring sees a steady rise as runoff and sun warm the shallows, commonly reaching 40–55°F (4–13°C). Peak summer temperatures in July and August can warm the upper water to around 60–75°F (15–24°C) on warm, calm days, especially in shallow bays; cooler, deeper or wind-exposed areas remain colder. By fall the water cools again, often falling into the 45–60°F (7–16°C) range before ice forms.
Swimming is possible in summer where public access exists because the lake can become comfortably warm in shallow areas, but use is subject to a few practical and regulatory limits. Much of the shoreline and surrounding waters are managed for wildlife habitat, so portions of the lake may be seasonally closed or discouraged to protect birds and wetlands; waterfowl presence, algae blooms or localized water-quality advisories can also make swimming inadvisable. Even in summer, sudden wind and cold water near depth changes can produce cold-shock risk, so anyone considering a swim should check local access rules, watch for posted advisories, and use caution.