Big Maggie Lake; Mastodon Township Water Temperature
Big Maggie Lake; Mastodon Township in Iron County, Michigan averages about 64°F at the surface in summer — warmest in Aug (~67°F) and coldest in May (~55°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 36 field readings (2016–2016) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Big Maggie Lake; Mastodon Township warm enough to swim?
Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Want more than temperature? Big Maggie Lake; Mastodon 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 ~60°F
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Summer average ~68°F
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Frequently asked questions
What is the water temperature of Big Maggie Lake; Mastodon Township?
Big Maggie Lake; Mastodon Township has a typical summer surface temperature of about 64°F. It is usually warmest in August (around 67°F) and coldest in May (around 55°F). These are typical values by month from 36 EPA Water Quality Portal field readings (2016–2016), not a live reading.
When is Big Maggie Lake; Mastodon Township warmest?
Surface water at Big Maggie Lake; Mastodon Township is typically warmest in August, reaching about 67°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 Big Maggie Lake; Mastodon Township warm enough to swim?
At its typical summer peak of about 64°F, Big Maggie Lake; Mastodon Township rates as "cool" for swimming. Brisk but swimmable for short dips — most people acclimate after the first few minutes.
Where does this Big Maggie Lake; Mastodon 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 — 36 readings from 1 monitoring station between 2016 and 2016. 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.