Little Lake Deep Water Temperature
Little Lake Deep in Cook County, Minnesota typically sits around 63°F at the surface in September — warmest in Jul (~69°F) and coldest in May (~60°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 31 field readings (2010–2024) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Little Lake Deep warm enough to swim?
Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Want more than temperature? Little Lake Deep 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 ~55°F
Summer average ~57°F
Summer average ~71°F
Summer average ~69°F
Summer average ~71°F
Summer average ~71°F
Explore water temperatures
Where to stay near Little Lake Deep
Planning a swim or lake trip? Compare cabins, lodges, and vacation rentals near Little Lake Deep — 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 Little Lake Deep
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Frequently asked questions
What is the water temperature of Little Lake Deep?
Little Lake Deep typically sits around 63°F at the surface in September, from 31 EPA Water Quality Portal field readings (2010–2024). That is a typical value for the month, not a live reading.
When is Little Lake Deep warmest?
Surface water at Little Lake Deep 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 Little Lake Deep warm enough to swim?
At its typical summer peak of about 69°F, Little Lake Deep rates as "cool" for swimming. Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Where does this Little Lake Deep 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 — 31 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.