Lost Grove Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lost Grove Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lost Grove Lake today is 27.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 79°F (26°C) to 82°F (28°C). This is very warm water, allowing for extended stays without any discomfort. Swimming in these conditions will be particularly enjoyable, making it the ideal temperature range for those who want to relax in the sea. Additionally, water in this temperature range is suitable for children and elderly people, as it is comfortable for prolonged stays. 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 |
|---|---|---|---|
| AUG 4 | 26.9°C | 24.5°C | |
| AUG 5 | 27.2°C | 24.5°C | |
| AUG 6 | 27.3°C | 24.5°C | |
| AUG 7 | 27.5°C | 24.5°C | |
| AUG 8 | 27.4°C | 24.5°C | |
| AUG 9 | 27.6°C | 24.5°C | |
| AUG 10 | 27.7°C | 24.5°C | |
| AUG 11 | 27.8°C | 24.5°C | |
| AUG 12 | 24.5°C | 27.6°C | |
| AUG 13 | 24.5°C | 27.5°C | |
| AUG 14 | 24.5°C | 27.3°C | |
| AUG 15 | 24.5°C | 27.1°C | |
| AUG 16 | 24.5°C | 27.0°C | |
| AUG 17 | 24.5°C | 26.8°C | |
| AUG 18 | 24.5°C | 26.6°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 | 3°C | 6°C |
| March | 1°C | 6°C | 9°C |
| April | 6°C | 12°C | 18°C |
| May | 13°C | 18°C | 24°C |
| June | 19°C | 22°C | 26°C |
| July | 22°C | 26°C | 31°C |
| August | 21°C | 25°C | 28°C |
| September | 19°C | 21°C | 24°C |
| October | 14°C | 18°C | 22°C |
| November | 5°C | 10°C | 15°C |
| December | 0°C | 3°C | 6°C |
Lost Grove Lake: Water Temperature by Location
Lost Grove Lake: Weather Forecast
August 12
August 13
August 14
August 15
Location & Local Information
Lost Grove Lake in Iowa experiences the seasonal temperature swings common to Midwestern reservoirs. In spring the surface water typically ranges from about 40–60°F (4–16°C) as snowmelt and runoff cool the basin. Summer brings the warmest conditions, with surface temperatures often climbing to roughly 65–80°F (18–27°C) on sunny days, while stratification can leave deeper water several degrees colder. During autumn the lake cools back to roughly 50–65°F (10–18°C) and by winter the surface approaches freezing, commonly around 32–39°F (0–4°C) when ice conditions are forming. Weather, wind, and recent rainfall can cause short-term variations, so actual readings at the shore may differ from these general ranges.
Swimming at Lost Grove Lake is generally possible where public shoreline access exists, but there are typically no staffed lifeguards or formal, monitored swim beaches, so people swim at their own risk. Local rules and posted signs should be followed because hazards such as sudden drop-offs, underwater vegetation, boat traffic, and cold-water shock in shoulder seasons can increase danger. In colder months swimming is discouraged due to low water temperatures and the risk of hypothermia. Visitors should check current conditions and adhere to any on-site restrictions before entering the water.