Lake Winnibigoshish Water Temperature
Lake Winnibigoshish in Cass County, Minnesota typically sits around 58°F at the surface in October — warmest in Jul (~69°F) and coldest in May (~49°F). That is a typical value for the month, not a live reading.
Typical water temperature by month
Column height runs from this lake’s coldest month (49°F) to its warmest (69°F).
Typical surface water temperature by month, from 240 field readings (2024–2025) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Lake Winnibigoshish warm enough to swim?
Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Want more than temperature? Lake Winnibigoshish water quality: clarity, algae, phosphorus, depth, fish species, and current advisories, all on one page.
Water temperatures at nearby Minnesota lakes
Summer average ~70°F
Summer average ~69°F
Summer average ~61°F
Summer average ~58°F
Summer average ~61°F
Summer average ~70°F
Explore water temperatures
Where to stay near Lake Winnibigoshish
Planning a swim or lake trip? Compare cabins, lodges, and vacation rentals near Lake Winnibigoshish — 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 Lake Winnibigoshish
Prices for Oct 23–25, 4 adults. Change dates on the map below.
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Frequently asked questions
What is the water temperature of Lake Winnibigoshish?
Lake Winnibigoshish typically sits around 58°F at the surface in October, from 240 EPA Water Quality Portal field readings (2024–2025). That is a typical value for the month, not a live reading.
When is Lake Winnibigoshish warmest?
Surface water at Lake Winnibigoshish is typically warmest in July, reaching about 69°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 Winnibigoshish warm enough to swim?
At its typical summer peak of about 66°F, Lake Winnibigoshish rates as "cool" for swimming. Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Where does this Lake Winnibigoshish 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 — 240 readings from 1 monitoring station between 2024 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.