Updated
Grass Lake
Lake
Use caution — no live reading, and an advisory is in effect
Use cautionUse caution — no live reading, and an advisory is in effect: a Severe Thunderstorm Watch is in effect for Dane, WI; Green, WI; Iowa, WI; Jefferson, WI; Kenosha, WI; Lafayette, WI; Rock, WI; Sauk, WI; Walworth, WI.
- A Severe Thunderstorm Watch is in effect for Dane, WI; Green, WI; Iowa, WI; Jefferson, WI; Kenosha, WI; Lafayette, WI; Rock, WI; Sauk, WI; Walworth, WI.
- Heavy rain today can raise bacteria levels near outfalls and river mouths.
lake in Dane County, United States of America - Geonames ID = 5254899
Interactive map not available
Use caution — no live reading, and an advisory is in effect
Use cautionUse caution — no live reading, and an advisory is in effect: a Severe Thunderstorm Watch is in effect for Dane, WI; Green, WI; Iowa, WI; Jefferson, WI; Kenosha, WI; Lafayette, WI; Rock, WI; Sauk, WI; Walworth, WI.
- A Severe Thunderstorm Watch is in effect for Dane, WI; Green, WI; Iowa, WI; Jefferson, WI; Kenosha, WI; Lafayette, WI; Rock, WI; Sauk, WI; Walworth, WI. — NWS Milwaukee/Sullivan WI
- Heavy rain today can raise bacteria levels near outfalls and river mouths.
- No live water-temperature reading for this spot.
No official beach-advisory feed for Wisconsin yet — follow posted signs and local guidance.
Weather at Grass Lake
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Frequently asked questions
- Where is Grass Lake?
- Grass Lake is a lake in Wisconsin.
- Can you swim at Grass Lake?
- Use caution — no live reading, and an advisory is in effect: a Severe Thunderstorm Watch is in effect for Dane, WI; Green, WI; Iowa, WI; Jefferson, WI; Kenosha, WI; Lafayette, WI; Rock, WI; Sauk, WI; Walworth, WI. Checked August 22, 2026.
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Best Times to Visit
- ›Check for boat launch facilities and fees
- ›Obtain required fishing licenses before arrival
- ›Be aware of lake-specific regulations and restrictions
- ›Monitor water quality reports before swimming
Location & Contact
Wisconsin
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