Where is Forest Lake?

Forest Lake is a lake in Wisconsin.

What is the water temperature at Forest Lake?

As of August 22, 2026, the water temperature at Forest Lake in Wisconsin is 73°F (23°C), measured by NOAA buoy 45013, 28.1 miles away.

What amenities does Forest Lake have?

Visitor-listed amenities at Forest Lake include pet-friendly.

Updated June 13, 2026

Forest Lake

Lake

Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 73°F, within the comfortable 70–86°F range.

Water temperature is 73°F, within the comfortable 70–86°F range.

See full conditions ↓Can I swim today? →

Good to swimCool todaypet-friendly

lake in Waukesha County, Wisconsin, United States of America

Interactive map not available

Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 73°F, within the comfortable 70–86°F range.

Water temperature is 73°F, within the comfortable 70–86°F range. — NOAA buoy 45013, as of Aug 22, 11:00 AM UTC

Water temp

73°F

23°C

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

Live data from NOAA buoy 45013 (28.1 mi away), as of Aug 22, 11:00 AM UTC.

Live map near here →

Weather at Forest Lake

H: 81° L: 61°

Sunny

65°

Feels like 63°

Precipitation

Humidity

83%

Wind

9 mph

UV Index

0.8

Water Conditions:

🥶Too cold for most swimmers

12 AM

66°

3 AM

64°

6 AM

61°

9 AM

68°

12 PM

79°

3 PM

79°

6 PM

75°

9 PM

65°

Pack smarter for Forest 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.

Inflatable PaddleboardA popular way to explore calm coves and shorelines.

Compare on Amazon →

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 Forest Lake?: Forest Lake is a lake in Wisconsin.
What is the water temperature at Forest Lake?: As of August 22, 2026, the water temperature at Forest Lake in Wisconsin is 73°F (23°C), measured by NOAA buoy 45013, 28.1 miles away.
Can you swim at Forest Lake?: Comfortable for a swim today: water temperature is 73°F, within the comfortable 70–86°F range. Checked August 22, 2026.
What amenities does Forest Lake have?: Visitor-listed amenities at Forest Lake include pet-friendly.

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Best Times to Visit

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Right Now

Cool weather - dress warmly

🏞️ 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

Wisconsin

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