Parent Lake Water Temperature
Parent Lake in Lake County, Minnesota averages about 58°F at the surface in summer — warmest in Jul (~58°F) and coldest in May (~41°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 55 field readings (2016–2025) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Parent Lake warm enough to swim?
Wetsuit territory. Brief exposure is tolerable but prolonged swimming without protection risks hypothermia.
Want more than temperature? Parent Lake scored A on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.
Water temperatures at nearby Minnesota lakes
Summer average ~59°F
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Frequently asked questions
What is the water temperature of Parent Lake?
Parent Lake has a typical summer surface temperature of about 58°F. It is usually warmest in July (around 58°F) and coldest in May (around 41°F). These are typical values by month from 55 EPA Water Quality Portal field readings (2016–2025), not a live reading.
When is Parent Lake warmest?
Surface water at Parent Lake is typically warmest in July, reaching about 58°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 Parent Lake warm enough to swim?
At its typical summer peak of about 58°F, Parent Lake rates as "cold" for swimming. Wetsuit territory. Brief exposure is tolerable but prolonged swimming without protection risks hypothermia.
Where does this Parent Lake 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 — 55 readings from 1 monitoring station between 2016 and 2025. 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.