Black Lake Southwest Basin; Grant Township Water Temperature
Black Lake Southwest Basin; Grant Township in Cheboygan County, Michigan averages about 64°F at the surface in summer — warmest in Aug (~69°F) and coldest in May (~53°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 135 field readings (2023–2023) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Black Lake Southwest Basin; Grant Township warm enough to swim?
Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Want more than temperature? Black Lake Southwest Basin; Grant Township 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 ~67°F
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Summer average ~76°F
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Frequently asked questions
What is the water temperature of Black Lake Southwest Basin; Grant Township?
Black Lake Southwest Basin; Grant Township has a typical summer surface temperature of about 64°F. It is usually warmest in August (around 69°F) and coldest in May (around 53°F). These are typical values by month from 135 EPA Water Quality Portal field readings (2023–2023), not a live reading.
When is Black Lake Southwest Basin; Grant Township warmest?
Surface water at Black Lake Southwest Basin; Grant Township is typically warmest in August, 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 Black Lake Southwest Basin; Grant Township warm enough to swim?
At its typical summer peak of about 64°F, Black Lake Southwest Basin; Grant Township rates as "cool" for swimming. Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Where does this Black Lake Southwest Basin; Grant Township 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 — 135 readings from 1 monitoring station between 2023 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.