Eastern Stump Lake Water Temperature
Eastern Stump Lake in Nelson County, North Dakota averages about 58°F at the surface in summer — warmest in Sep (~66°F) and coldest in Jan (~33°F). These are typical values by month, not a live reading.
Typical water temperature by month
Typical surface water temperature by month, from 887 field readings (2010–2023) via the EPA Water Quality Portal. Months with too few readings are left blank.
Is Eastern Stump Lake warm enough to swim?
Wetsuit territory. Brief exposure is tolerable but prolonged swimming without protection risks hypothermia.
Want more than temperature? Eastern Stump Lake scored F on water quality — clarity, algae, phosphorus, depth, fish species, and swimming safety, all on one report card.
Water temperatures at nearby North Dakota lakes
Summer average ~63°F
Summer average ~61°F
Summer average ~67°F
Summer average ~66°F
Summer average ~67°F
Summer average ~70°F
Explore water temperatures
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Frequently asked questions
What is the water temperature of Eastern Stump Lake?
Eastern Stump Lake has a typical summer surface temperature of about 58°F. It is usually warmest in September (around 66°F) and coldest in January (around 33°F). These are typical values by month from 887 EPA Water Quality Portal field readings (2010–2023), not a live reading.
When is Eastern Stump Lake warmest?
Surface water at Eastern Stump Lake is typically warmest in September, reaching about 66°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 Eastern Stump Lake warm enough to swim?
At its typical summer peak of about 58°F, Eastern Stump Lake rates as "cold" for swimming. Wetsuit territory. Brief exposure is tolerable but prolonged swimming without protection risks hypothermia.
Where does this Eastern Stump 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 — 887 readings from 1 monitoring station 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.