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Lake Decatur — Boating Conditions
Tides, water temp & weather • Macon County, IL
Boating Conditions at Lake Decatur
Current wind, air and water temperature, tide times and a 10-day forecast for Lake Decatur on Lake Decatur in Macon County, Illinois. Check conditions before you launch.
Right Now
Overcast
Calm — good conditions to get on the water
Air Temp
80°F
Wind
2 mph
gusts 3 mph
Next Few Hours
Now
⛅
80°
1%
2 mph
8PM
⛅
78°
1%
4 mph
9PM
⛅
75°
3%
5 mph
10PM
⛅
74°
4%
5 mph
11PM
⛅
73°
5%
4 mph
12AM
⛅
73°
5%
6 mph
10-Day Boating Forecast
Sat, 9/19
🌧️
86° / 71°
Wind 9, gusts 20 mph
35% rain
Sun, 9/20
🌧️
84° / 69°
Wind 13, gusts 24 mph
21% rain
Mon, 9/21
🌧️
71° / 63°
Wind 12, gusts 20 mph
67% rain
Tue, 9/22
⛅
69° / 56°
Wind 12, gusts 21 mph
33% rain
Wed, 9/23
⛅
72° / 53°
Wind 14, gusts 20 mph
4% rain
Thu, 9/24
⛅
67° / 48°
Wind 10, gusts 19 mph
Fri, 9/25
⛅
69° / 59°
Wind 9, gusts 16 mph
2% rain
Sat, 9/26
🌧️
63° / 56°
Wind 7, gusts 17 mph
8% rain
Sun, 9/27
⛅
73° / 52°
Wind 11, gusts 18 mph
6% rain
Mon, 9/28
☀️
76° / 49°
Wind 8, gusts 20 mph
13% rain
Weather & wave data from Open-Meteo. Tides & water temperature from NOAA CO-OPS. Conditions are estimates for trip planning — always confirm locally and check official marine forecasts before heading out.
