Round Lake Central Basin Water Temperature
Round Lake Central Basin in Lenawee County, Michigan averages about 61°F at the surface in summer — warmest in Jul (~62°F) and coldest in Mar (~42°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 1,397 field readings (2010–2023) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Round Lake Central Basin warm enough to swim?
Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Want more than temperature? Round Lake Central Basin scored A on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.
Water temperatures at nearby Michigan lakes
Summer average ~62°F
Summer average ~63°F
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Summer average ~66°F
Summer average ~67°F
Summer average ~67°F
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Frequently asked questions
What is the water temperature of Round Lake Central Basin?
Round Lake Central Basin has a typical summer surface temperature of about 61°F. It is usually warmest in July (around 62°F) and coldest in March (around 42°F). These are typical values by month from 1,397 EPA Water Quality Portal field readings (2010–2023), not a live reading.
When is Round Lake Central Basin warmest?
Surface water at Round Lake Central Basin is typically warmest in July, reaching about 62°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 Round Lake Central Basin warm enough to swim?
At its typical summer peak of about 61°F, Round Lake Central Basin rates as "cool" for swimming. Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Where does this Round Lake Central Basin 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 — 1,397 readings from 2 monitoring stations between 2010 and 2023. 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.