Where is Arnold Lake?

Arnold Lake is a lake in Michigan.

What is the water temperature at Arnold Lake?

As of August 22, 2026, the water temperature at Arnold Lake in Michigan is 77°F (25°C), measured by NOAA buoy 45200, 41.6 miles away.

Updated June 13, 2026

Arnold Lake

Lake

Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 77°F, within the comfortable 70–86°F range.

Water temperature is 77°F, within the comfortable 70–86°F range.
A Special Weather Statement has been issued for Washtenaw.

See full conditions ↓Can I swim today? →

Good to swimGood conditions today

lake in Washtenaw County, Michigan, USA

Interactive map not available

Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 77°F, within the comfortable 70–86°F range.

Water temperature is 77°F, within the comfortable 70–86°F range. — NOAA buoy 45200, as of Aug 22, 2:10 PM UTC
A Special Weather Statement has been issued for Washtenaw. — NWS Detroit/Pontiac MI

Water temp

77°F

25°C

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

Live data from NOAA buoy 45200 (41.6 mi away), as of Aug 22, 2:10 PM UTC.

Live map near here →

Weather at Arnold Lake

H: 79° L: 60°

Sunny

73°

Feels like 73°

Precipitation

64%

Humidity

72%

Wind

8 mph

UV Index

2.4

Water Conditions:

🏊Cool but swimmable

12 AM

66°

3 AM

63°

6 AM

60°

9 AM

68°

12 PM

77°

3 PM

77°

6 PM

79°

9 PM

68°

Pack smarter for Arnold Lake

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

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Inflatable PaddleboardA popular way to explore calm coves and shorelines.

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Life JacketImportant around boats, paddling, and deeper swimming areas.

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Floating CoolerKeeps drinks nearby for swim areas, docks, and boats.

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Waterproof Phone PouchProtects phones around docks, boats, and splashy shorelines.

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Frequently asked questions

Where is Arnold Lake?: Arnold Lake is a lake in Michigan.
What is the water temperature at Arnold Lake?: As of August 22, 2026, the water temperature at Arnold Lake in Michigan is 77°F (25°C), measured by NOAA buoy 45200, 41.6 miles away.
Can you swim at Arnold Lake?: Comfortable for a swim today: water temperature is 77°F, within the comfortable 70–86°F range. Checked August 22, 2026.

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🏞️ 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

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