Lake Darling Water Temperature
Lake Darling in Renville County, North Dakota averages about 45°F at the surface in summer — warmest in Jul (~47°F) and coldest in Sep (~40°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 104 field readings (2015–2023) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Lake Darling warm enough to swim?
Cold-water shock is a real risk below 50°F — unprotected swimming is unsafe and even strong swimmers can lose muscle control within minutes.
Want more than temperature? Lake Darling scored B on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.
Water temperatures at nearby North Dakota lakes
Summer average ~60°F
Summer average ~67°F
Summer average ~63°F
Summer average ~60°F
Summer average ~60°F
Summer average ~68°F
Explore water temperatures
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Frequently asked questions
What is the water temperature of Lake Darling?
Lake Darling has a typical summer surface temperature of about 45°F. It is usually warmest in July (around 47°F) and coldest in September (around 40°F). These are typical values by month from 104 EPA Water Quality Portal field readings (2015–2023), not a live reading.
When is Lake Darling warmest?
Surface water at Lake Darling is typically warmest in July, reaching about 47°F. Lake surface temperature lags air temperature by several weeks, so the warmest water usually arrives in mid-to-late summer even though the hottest air can come earlier.
Is Lake Darling warm enough to swim?
At its typical summer peak of about 45°F, Lake Darling rates as "very cold" for swimming. Cold-water shock is a real risk below 50°F — unprotected swimming is unsafe and even strong swimmers can lose muscle control within minutes.
Where does this Lake Darling water temperature data come from?
Every temperature on this page is a typical (climatological) value computed from real surface-water field readings collected by state and federal agencies and published through the EPA Water Quality Portal — 104 readings from 1 monitoring station between 2015 and 2023. They describe what is typical for each month, not the temperature right now.
About this data
Water temperatures are a climatology — the typical value for each month, averaged from real surface-water field readings collected by state and federal agencies and published through the EPA Water Quality Portal. They tell you what to expect, not the temperature at this moment. Actual conditions vary with recent weather, depth, and time of day.