Peary Lake Water Temperature
Peary Lake in St. Louis County, Minnesota typically sits around 70°F at the surface in August — warmest in Jul (~70°F) and coldest in Jun (~68°F). That is a typical value for the month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 192 field readings (2010–2024) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Peary Lake warm enough to swim?
Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Want more than temperature? Peary Lake scored B 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 ~62°F
Summer average ~53°F
Summer average ~70°F
Summer average ~67°F
Summer average ~57°F
Summer average ~53°F
Explore water temperatures
Where to stay near Peary Lake
Planning a swim or lake trip? Compare cabins, lodges, and vacation rentals near Peary Lake — live availability and prices. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Peary Lake
Prices for Sep 4–6, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Peary Lake?
Get lake water-quality report cards plus the best cabin & lodging deals near Peary Lake — straight to your inbox. No spam, unsubscribe anytime.
Frequently asked questions
What is the water temperature of Peary Lake?
Peary Lake typically sits around 70°F at the surface in August, from 192 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
When is Peary Lake warmest?
Surface water at Peary Lake is typically warmest in July, reaching about 70°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 Peary Lake warm enough to swim?
At its typical summer peak of about 69°F, Peary Lake rates as "cool" for swimming. Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Where does this Peary 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 — 192 readings from 1 monitoring station between 2010 and 2024. 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.