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Satellite view of Green Lake

Green 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.
Good to swimGood conditions today

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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 45198, as of Aug 22, 8:00 AM UTC
Water temp
73°F
23°C

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

Live data from NOAA buoy 45198 (21.1 mi away), as of Aug 22, 8:00 AM UTC.

Weather at Green Lake

H: 81° L: 65°
Mist
Mist
66°
|
Feels like 69°
Precipitation
5%
Humidity
95%
Wind
5 mph
UV Index
0
Water Conditions:
🏊Cool but swimmable
12 AM
Partly Cloudy
68°
3 AM
Mist
67°
6 AM
Mist
65°
9 AM
Sunny
69°
12 PM
Sunny
81°
3 PM
Sunny
81°
6 PM
Sunny
76°
9 PM
Clear
71°

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Frequently asked questions

Where is Green Lake?
Green Lake is a lake in Illinois.
What is the water temperature at Green Lake?
As of August 22, 2026, the water temperature at Green Lake in Illinois is 73°F (23°C), measured by NOAA buoy 45198, 21.1 miles away.
Can you swim at Green Lake?
Comfortable for a swim today: water temperature is 73°F, within the comfortable 70–86°F range. Checked August 22, 2026.

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Best Times to Visit

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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

Illinois

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