Gage Lake Water Temperature
Gage Lake in Cass County, Michigan averages about 71°F at the surface in summer — warmest in Aug (~73°F) and coldest in Feb (~39°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 775 field readings (2013–2025) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Gage Lake warm enough to swim?
Pleasant for swimming — the range most people find enjoyable without a wetsuit.
Want more than temperature? Gage Lake scored F 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 ~70°F
Summer average ~59°F
Summer average ~72°F
Summer average ~66°F
Summer average ~66°F
Summer average ~66°F
Explore water temperatures
Where to stay near Gage Lake
Planning a swim or lake trip? Compare cabins, lodges, and vacation rentals near Gage Lake — live availability and prices.
Top-rated places to stay near Gage Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Gage Lake?
Get lake water-quality report cards plus the best cabin & lodging deals near Gage Lake — straight to your inbox. No spam, unsubscribe anytime.
Frequently asked questions
What is the water temperature of Gage Lake?
Gage Lake has a typical summer surface temperature of about 71°F. It is usually warmest in August (around 73°F) and coldest in February (around 39°F). These are typical values by month from 775 EPA Water Quality Portal field readings (2013–2025), not a live reading.
When is Gage Lake warmest?
Surface water at Gage Lake is typically warmest in August, reaching about 73°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 Gage Lake warm enough to swim?
At its typical summer peak of about 71°F, Gage Lake rates as "comfortable" for swimming. Pleasant for swimming — the range most people find enjoyable without a wetsuit.
Where does this Gage Lake 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 — 775 readings from 1 monitoring station between 2013 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.