Lacey Keosauqua Lake Water Temperature
Lacey Keosauqua Lake in Van Buren County, Iowa typically sits around 78°F at the surface in September — warmest in Jul (~83°F) and coldest in May (~73°F). That is a typical value for the month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 103 field readings (2010–2023) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Lacey Keosauqua Lake warm enough to swim?
Very comfortable for swimming. Warm surface water can also favor blue-green algae in nutrient-rich lakes, so check for advisories before you go in.
Want more than temperature? Lacey Keosauqua Lake scored A on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.
Water temperatures at nearby Iowa lakes
Summer average ~78°F
Summer average ~81°F
Summer average ~78°F
Summer average ~78°F
Summer average ~81°F
Summer average ~78°F
Explore water temperatures
Where to stay near Lacey Keosauqua Lake
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Top-rated places to stay near Lacey Keosauqua Lake
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Frequently asked questions
What is the water temperature of Lacey Keosauqua Lake?
Lacey Keosauqua Lake typically sits around 78°F at the surface in September, from 103 EPA Water Quality Portal field readings (2010–2023). That is a typical value for the month, not a live reading.
When is Lacey Keosauqua Lake warmest?
Surface water at Lacey Keosauqua Lake is typically warmest in July, reaching about 83°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 Lacey Keosauqua Lake warm enough to swim?
At its typical summer peak of about 81°F, Lacey Keosauqua Lake rates as "warm" for swimming. Very comfortable for swimming. Warm surface water can also favor blue-green algae in nutrient-rich lakes, so check for advisories before you go in.
Where does this Lacey Keosauqua 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 — 103 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.