Can you swim here today?
Grass Lake
Michigan · Lake
Cool water — ease in carefully
Use cautionAs of August 22, 2026, the water temperature at Grass Lake is 61°F (16°C), measured by NOAA buoy 45211, 37.1 miles away.
Cool water — ease in carefully: water temperature is 61°F, cool enough to cause cold-water shock on a sudden entry.
- Water temperature is 61°F, cool enough to cause cold-water shock on a sudden entry. — NOAA buoy 45211, as of Aug 22, 2:26 AM UTC
- Heavy rain today can raise bacteria levels near outfalls and river mouths.
Water temp
61°F
16°C
No official beach-advisory feed for Michigan yet — follow posted signs and local guidance.
Live data from NOAA buoy 45211 (37.1 mi away), as of Aug 22, 2:26 AM UTC.
Before you get in
- Never swim alone — and keep weaker swimmers within arm's reach.
- Scout depth and entry/exit points before you get in.
- Read the current: avoid fast, rising, or murky water.
- Check the forecast — get out well before storms or lightning.
- Obey posted signs, flags, and lifeguard guidance.
Read next
Conditions are for general information only and can change quickly. Always judge the water in person and follow posted advisories and local guidance before swimming or paddling.