Jackson Park East Lagoon Lake Water Temperature
Jackson Park East Lagoon Lake in Cook County, Illinois averages about 78°F at the surface in summer — warmest in Jun (~78°F) and coldest in Oct (~56°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 21 field readings (2014–2023) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Jackson Park East Lagoon Lake warm enough to swim?
Pleasant for swimming — the range most people find enjoyable without a wetsuit.
Want more than temperature? Jackson Park East Lagoon Lake scored D on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.
Water temperatures at nearby Illinois lakes
Summer average ~78°F
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Summer average ~75°F
Summer average ~78°F
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Frequently asked questions
What is the water temperature of Jackson Park East Lagoon Lake?
Jackson Park East Lagoon Lake has a typical summer surface temperature of about 78°F. It is usually warmest in June (around 78°F) and coldest in October (around 56°F). These are typical values by month from 21 EPA Water Quality Portal field readings (2014–2023), not a live reading.
When is Jackson Park East Lagoon Lake warmest?
Surface water at Jackson Park East Lagoon Lake is typically warmest in June, reaching about 78°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 Jackson Park East Lagoon Lake warm enough to swim?
At its typical summer peak of about 78°F, Jackson Park East Lagoon Lake rates as "comfortable" for swimming. Pleasant for swimming — the range most people find enjoyable without a wetsuit.
Where does this Jackson Park East Lagoon 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 — 21 readings from 2 monitoring stations between 2014 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.