Pillager Lake Water Temperature
Pillager Lake in Cass County, Minnesota averages about 66°F at the surface in summer — warmest in Aug (~77°F) and coldest in Jun (~59°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 68 field readings (2010–2024) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Pillager Lake warm enough to swim?
Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Want more than temperature? Pillager Lake scored A on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.
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Frequently asked questions
What is the water temperature of Pillager Lake?
Pillager Lake has a typical summer surface temperature of about 66°F. It is usually warmest in August (around 77°F) and coldest in June (around 59°F). These are typical values by month from 68 EPA Water Quality Portal field readings (2010–2024), not a live reading.
When is Pillager Lake warmest?
Surface water at Pillager Lake is typically warmest in August, reaching about 77°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 Pillager Lake warm enough to swim?
At its typical summer peak of about 66°F, Pillager Lake rates as "cool" for swimming. Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Where does this Pillager 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 — 68 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.