Peter Lake Water Temperature
Peter Lake in Hennepin County, Minnesota averages about 50°F at the surface in summer — warmest in Jul (~50°F) and coldest in Apr (~44°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 625 field readings (2011–2024) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Peter Lake warm enough to swim?
Wetsuit territory. Brief exposure is tolerable but prolonged swimming without protection risks hypothermia.
Want more than temperature? Peter Lake scored C 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 ~57°F
Summer average ~60°F
Summer average ~57°F
Summer average ~59°F
Summer average ~56°F
Summer average ~61°F
Explore water temperatures
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Frequently asked questions
What is the water temperature of Peter Lake?
Peter Lake has a typical summer surface temperature of about 50°F. It is usually warmest in July (around 50°F) and coldest in April (around 44°F). These are typical values by month from 625 EPA Water Quality Portal field readings (2011–2024), not a live reading.
When is Peter Lake warmest?
Surface water at Peter Lake is typically warmest in July, reaching about 50°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 Peter Lake warm enough to swim?
At its typical summer peak of about 50°F, Peter Lake rates as "cold" for swimming. Wetsuit territory. Brief exposure is tolerable but prolonged swimming without protection risks hypothermia.
Where does this Peter 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 — 625 readings from 1 monitoring station between 2011 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.