Skip to content
Satellite view of Grass Lake

Grass Lake

Lake

Cool water — ease in carefully

Use caution

Cool water — ease in carefully: water temperature is 68°F, cool enough to cause cold-water shock on a sudden entry.

  • Water temperature is 68°F, cool enough to cause cold-water shock on a sudden entry.
Use cautionGood conditions today

Interactive map not available

Cool water — ease in carefully

Use caution

Cool water — ease in carefully: water temperature is 68°F, cool enough to cause cold-water shock on a sudden entry.

  • Water temperature is 68°F, cool enough to cause cold-water shock on a sudden entry. NOAA buoy RCKM4, as of Aug 22, 2:18 AM UTC
Water temp
68°F
20°C

No official beach-advisory feed for Michigan yet — follow posted signs and local guidance.

Live data from NOAA buoy RCKM4 (18 mi away), as of Aug 22, 2:18 AM UTC.

Weather at Grass Lake

H: 78° L: 60°
Overcast
Overcast
66°
|
Feels like 64°
Precipitation
19%
Humidity
82%
Wind
10 mph
UV Index
0
Water Conditions:
🏊Cool but swimmable
12 AM
Partly Cloudy
60°
3 AM
Overcast
60°
6 AM
Overcast
61°
9 AM
Patchy rain nearby
68°
12 PM
Patchy rain nearby
69°
3 PM
Sunny
78°
6 PM
Partly Cloudy
76°
9 PM
Partly Cloudy
67°

Sponsored gear checklist

Pack smarter for Grass Lake

Useful gear categories for this kind of water spot. These links open Amazon search results so you can compare current options.

As an Amazon Associate we earn from qualifying purchases.

Frequently asked questions

Where is Grass Lake?
Grass Lake is a lake in Michigan.
What is the water temperature at Grass Lake?
As of August 22, 2026, the water temperature at Grass Lake in Michigan is 68°F (20°C), measured by NOAA buoy RCKM4, 18 miles away.
Can you swim at Grass Lake?
Cool water — ease in carefully: water temperature is 68°F, cool enough to cause cold-water shock on a sudden entry. Checked August 22, 2026.

Visitor Reviews

Be the first to share your experience here

Join our community to share your water adventures

Earn badges as you share your experiences!

💧 Droplet💦 Stream🌊 Wave💧 Current🌀 Tide🌊 Ocean

No reviews yet — share what you know

Been here? A quick note helps the next visitor plan their day. Handy things to mention:

Water temperatureCrowds & parkingBest time to goSafety & access

Best Times to Visit

👍
Right Now
Good conditions for visiting
🏞️ Lakes Tips:
  • 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
Best Seasons:
☀️ Summer (Jun-Aug)🍂 Fall (Sep-Nov)🌸 Spring (Mar-May)

Location & Contact

Michigan

</> Embed this location on your site

Paste this snippet into your website to show a live badge for Grass Lake — free to use with the included credit link.