Old Longview Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Old Longview Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Old Longview 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 |
|---|---|---|---|
| OCT 5 | 20.9°C | 19.5°C | |
| OCT 6 | 19.9°C | 19.5°C | |
| OCT 7 | 19.4°C | 19.5°C | |
| OCT 8 | 18.9°C | 19.5°C | |
| OCT 9 | 19.1°C | 19.5°C | |
| OCT 10 | 18.9°C | 19.5°C | |
| OCT 11 | 18.9°C | 19.5°C | |
| OCT 12 | 19.2°C | 19.5°C | |
| OCT 13 | 19.5°C | 18.5°C | |
| OCT 14 | 19.5°C | 18.5°C | |
| OCT 15 | 19.5°C | 18.6°C | |
| OCT 16 | 19.5°C | 18.6°C | |
| OCT 17 | 19.5°C | 18.7°C | |
| OCT 18 | 19.5°C | 18.7°C | |
| OCT 19 | 19.5°C | 18.8°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 | 3°C | 6°C |
| February | 0°C | 3°C | 6°C |
| March | 1°C | 9°C | 18°C |
| April | 9°C | 14°C | 20°C |
| May | 15°C | 20°C | 25°C |
| June | 20°C | 24°C | 27°C |
| July | 25°C | 30°C | 35°C |
| August | 23°C | 27°C | 31°C |
| September | 21°C | 25°C | 29°C |
| October | 15°C | 20°C | 24°C |
| November | 5°C | 11°C | 17°C |
| December | 1°C | 3°C | 6°C |
Old Longview Lake: Water Temperature by Location
Old Longview Lake: Weather Forecast
October 13
October 14
October 15
October 16
October 17
Location & Local Information
Old Longview Lake in Missouri follows the typical seasonal pattern of shallow Midwestern reservoirs, with surface temperatures that change dramatically through the year. In late winter and early spring (roughly December through May) surface readings often sit between about 32–65°F (0–18°C) depending on air temperatures and inflows; spring warming tends to push values into the upper 40s and 50s °F (8–15°C). By summer (June through August) the lake commonly reaches its warmest range, often in the 70s to mid-80s °F, roughly 21–29°C at the surface on warm, calm days. During autumn the surface cools again, typically falling to about 50–70°F (10–21°C). Deeper water and shaded coves remain noticeably cooler year-round, and short-term weather, recent rains and creek inputs can change temperatures markedly.
Swimming at Longview Lake is generally possible during the warmer months, but opportunities are informal rather than organized: the lake has limited lifeguarded beaches and some areas may be posted as restricted. Authorities and visitors cite safety concerns—boat traffic, submerged hazards, variable water quality and lack of lifeguards—as reasons to swim only in designated or clearly safe spots and to heed posted advisories. For the most comfortable experience, swimming is best in late June through August when surface temperatures are warmest, and users should always check current local guidance before entering the water.