Standley Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Standley Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Standley Lake today is 16.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 6 | 17.1°C | 17.0°C | |
| OCT 7 | 17.6°C | 17.0°C | |
| OCT 8 | 17.4°C | 17.0°C | |
| OCT 9 | 17.1°C | 17.0°C | |
| OCT 10 | 16.9°C | 17.0°C | |
| OCT 11 | 16.9°C | 17.0°C | |
| OCT 12 | 16.6°C | 17.0°C | |
| OCT 13 | 16.5°C | 17.0°C | |
| OCT 14 | 17.0°C | 16.2°C | |
| OCT 15 | 17.0°C | 16.3°C | |
| OCT 16 | 17.0°C | 16.3°C | |
| OCT 17 | 17.0°C | 16.4°C | |
| OCT 18 | 17.0°C | 16.4°C | |
| OCT 19 | 17.0°C | 16.4°C | |
| OCT 20 | 17.0°C | 16.5°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 | 0°C | 4°C | 8°C |
| March | 0°C | 7°C | 15°C |
| April | 6°C | 12°C | 17°C |
| May | 10°C | 16°C | 22°C |
| June | 16°C | 21°C | 26°C |
| July | 21°C | 26°C | 32°C |
| August | 21°C | 26°C | 32°C |
| September | 19°C | 24°C | 29°C |
| October | 13°C | 17°C | 21°C |
| November | 8°C | 11°C | 13°C |
| December | 2°C | 6°C | 10°C |
Standley Lake: Water Temperature by Location
Standley Lake: Weather Forecast
October 13
October 14
October 15
October 16
October 17
October 18
Location & Local Information
Standley Lake, a reservoir in the Denver metro area, experiences pronounced seasonal changes in surface water temperature driven by elevation and local climate. In winter the surface commonly sits near freezing, roughly 32–40°F (0–4°C), and ice can form in prolonged cold spells. Spring typically warms from about 40–60°F (4–15°C) as runoff and sunnier days raise temperatures. By summer, surface waters often reach the mid-60s to mid-70s Fahrenheit (about 18–24°C) on warm afternoons, though shallow bays may warm slightly more and deeper water layers remain significantly cooler. Autumn brings a steady decline, with temperatures generally falling back into the 45–60°F (7–15°C) range. Because Standley Lake is a reservoir with varying depth and limited mixing, temperatures can change quickly with weather and the deeper strata stay cold year-round.
Swimming at Standley Lake is not permitted; the reservoir serves as part of the municipal water supply and park rules prohibit entering the water for public-health and safety reasons. In addition to water-quality protection, there are safety concerns such as cold water, underwater hazards and the absence of lifeguarded swim areas. Recreational uses allowed around the lake focus on boating, fishing and shoreline activities in designated areas, while signage and park regulations are used to enforce the no‑swimming policy.