Rockport Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Rockport Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Rockport Lake today is 18.1°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 |
|---|---|---|---|
| SEP 14 | 16.7°C | 19.2°C | |
| SEP 15 | 17.9°C | 19.2°C | |
| SEP 16 | 18.0°C | 19.2°C | |
| SEP 17 | 17.8°C | 19.2°C | |
| SEP 18 | 18.0°C | 19.2°C | |
| SEP 19 | 17.7°C | 19.2°C | |
| SEP 20 | 18.1°C | 19.2°C | |
| SEP 22 | 19.2°C | 18.2°C | |
| SEP 23 | 19.2°C | 18.2°C | |
| SEP 24 | 19.2°C | 18.3°C | |
| SEP 25 | 19.2°C | 18.3°C | |
| SEP 26 | 19.2°C | 18.4°C | |
| SEP 27 | 19.2°C | 18.4°C | |
| SEP 28 | 19.2°C | 18.5°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 | 1°C | 4°C | 6°C |
| March | 1°C | 6°C | 12°C |
| April | 0°C | 7°C | 13°C |
| May | 5°C | 12°C | 19°C |
| June | 13°C | 17°C | 21°C |
| July | 18°C | 22°C | 26°C |
| August | 19°C | 23°C | 27°C |
| September | 15°C | 19°C | 24°C |
| October | 8°C | 13°C | 17°C |
| November | 3°C | 7°C | 11°C |
| December | 1°C | 3°C | 6°C |
Rockport Lake: Water Temperature by Location
Rockport Lake: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Rockport Lake (Rockport Reservoir) in northern Utah experiences a wide range of surface water temperatures through the year because of its elevation and seasonal weather. In summer months (June–August) surface temperatures typically rise into the 60s–70s °F (around 16–24 °C) on warm days. Spring (March–May) and fall (September–November) are much cooler, with surface readings commonly between the mid‑30s and mid‑60s °F (about 2–18 °C) depending on the timing of snowmelt and air temperatures. In winter the reservoir approaches freezing; surface temperatures are often near 32–40 °F (0–4 °C) and parts of the lake can ice over. Deeper water remains considerably colder year‑round, as stratification and inflowing river water keep sub-surface temperatures lower than the warmest surface values.
Swimming at Rockport is generally permitted because the reservoir is managed for multiple recreational uses, including boating and shoreline access, and visitors commonly swim in suitable weather. However, there are no lifeguards posted, boat traffic and sudden drop‑offs can pose hazards, and the water can be unexpectedly cold even in summer, increasing risk of cold‑water shock or hypothermia. For safety, swimmers should choose calm, shallow areas, wear appropriate protection (wetsuit or flotation device if needed), and be mindful of changing conditions.