Big Flat Lake, IL 14 Day Weather

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Big Flat Lake, IL Weather - 14-Day Weather Forecast

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Big Flat Lake IL Weather - Clear - 64°F
Clear
64°F
Updated 10:03 am
Feels Like 62°F
Humidity 63%
Wind N 0 mph
Barometer  30.39 in
Dew Point 51°F
Big Flat Lake IL Weather - Clear - 18°C
Clear
18°C
Updated 10:03 am
Feels Like 17°C
Humidity 63%
Wind N 0 km/h
Barometer  102.9 kPa
Dew Point 11°C
Big Flat Lake, IL Weather and Current Conditionsbig flat lake il weather forecast

Big Flat Lake, IL Weather Forecast

Big Flat Lake Illinois WeatherBig Flat Lake, Illinois Weather Weather Forecast
Here is the API 14 day weather forecast for Big Flat Lake. Note: The 7-day Big Flat Lake weather forecast is the most reliable and accurate weather forecast. This template should only be used as a probable scenario. Forecasting weather beyond the next 7 days is a challenge.
Big Flat Lake, IL Weather Forecast Dated: 1003 AM Mon Oct 26 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Monday, October 26, 2026

Mid-Morning
Big Flat Lake Weather - 2026-10-26 - Morning - Overcast
63°F 17°C
Overcast
Mid-Afternoon
Big Flat Lake Weather - 2026-10-26 - Afternoon - Overcast
77°F 25°C
Overcast
Early-Evening
Big Flat Lake Weather - 2026-10-26 - Evening - Sunny
66°F 19°C
Sunny
Pleasant near 77°F 25°C, overcast through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling.

Tuesday, October 27, 2026

Mid-Morning
Big Flat Lake Weather - 2026-10-27 - Morning - Overcast
61°F 16°C
Overcast
Mid-Afternoon
Big Flat Lake Weather - 2026-10-27 - Afternoon - Overcast
75°F 24°C
Overcast
Early-Evening
Big Flat Lake Weather - 2026-10-27 - Evening - Overcast
66°F 19°C
Overcast
Comfortable with temperatures reaching 75°F 24°C, overcast throughout the day, with lower humidity and steady pressure. Winds out of the S at 9 mph 14 km/h.

Wednesday, October 28, 2026

Mid-Morning
Big Flat Lake Weather - 2026-10-28 - Morning - Partly Cloudy
61°F 16°C
Partly Cloudy
Mid-Afternoon
Big Flat Lake Weather - 2026-10-28 - Afternoon - Overcast
80°F 26°C
Overcast
Early-Evening
Big Flat Lake Weather - 2026-10-28 - Evening - Partly Cloudy
69°F 21°C
Partly Cloudy
Quite warm around 80°F 26°C, partly cloudy in the morning, overcast in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds switching from the N to the S at 8 mph 13 km/h.

Thursday, October 29, 2026

Mid-Morning
Big Flat Lake Weather - 2026-10-29 - Morning - Sunny
64°F 18°C
Sunny
Mid-Afternoon
Big Flat Lake Weather - 2026-10-29 - Afternoon - Sunny
83°F 28°C
Sunny
Early-Evening
Big Flat Lake Weather - 2026-10-29 - Evening - Overcast
71°F 22°C
Overcast
Warm temperatures up to 83°F 28°C, sunny through the afternoon, turning overcast this evening, with steady humidity and steady pressure. Winds moving from the SSW to the S at 8 mph 13 km/h.

Friday, October 30, 2026

Mid-Morning
Big Flat Lake Weather - 2026-10-30 - Morning - Overcast
66°F 19°C
Overcast
Mid-Afternoon
Big Flat Lake Weather - 2026-10-30 - Afternoon - Overcast
81°F 27°C
Overcast
Early-Evening
Big Flat Lake Weather - 2026-10-30 - Evening - Overcast
69°F 21°C
Overcast
Very warm with a high of 81°F 27°C, overcast throughout the day, with steady humidity and steady pressure.

Saturday, October 31, 2026

Mid-Morning
Big Flat Lake Weather - 2026-10-31 - Morning - Drizzle
63°F 17°C
Drizzle
Mid-Afternoon
Big Flat Lake Weather - 2026-10-31 - Afternoon - Drizzle
68°F 20°C
Drizzle
Early-Evening
Big Flat Lake Weather - 2026-10-31 - Evening - Scattered Showers
65°F 19°C
Scattered Showers
Pleasant near 68°F 20°C, locally heavy downpours at times, with steady humidity and steady pressure.

Sunday, November 1, 2026

Mid-Morning
Big Flat Lake Weather - 2026-11-01 - Morning - Scattered Showers
65°F 18°C
Scattered Showers
Mid-Afternoon
Big Flat Lake Weather - 2026-11-01 - Afternoon - Scattered Showers
68°F 20°C
Scattered Showers
Early-Evening
Big Flat Lake Weather - 2026-11-01 - Evening - Scattered Showers
65°F 19°C
Scattered Showers
Comfortable with temperatures reaching 68°F 20°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure.

Monday, November 2, 2026

Mid-Morning
Big Flat Lake Weather - 2026-11-02 - Morning - Light Showers
67°F 19°C
Light Showers
Mid-Afternoon
Big Flat Lake Weather - 2026-11-02 - Afternoon - Light Showers
72°F 22°C
Light Showers
Early-Evening
Big Flat Lake Weather - 2026-11-02 - Evening - Light Showers
68°F 20°C
Light Showers
Enjoyable around 72°F 22°C, persistent showers off and on through the day, with steady humidity and barometric pressure falling. Winds swinging from the SSE to the S at 13 mph 20 km/h. Gusts up to 32 mph 51 km/h.

Tuesday, November 3, 2026

Mid-Morning
Big Flat Lake Weather - 2026-11-03 - Morning - Overcast
59°F 15°C
Overcast
Mid-Afternoon
Big Flat Lake Weather - 2026-11-03 - Afternoon - Partly Cloudy
62°F 17°C
Partly Cloudy
Early-Evening
Big Flat Lake Weather - 2026-11-03 - Evening - Partly Cloudy
57°F 14°C
Partly Cloudy
Refreshing around 62°F 17°C, overcast in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds shifting from the WNW to the NW at 9 mph 14 km/h. Gusts up to 24 mph 39 km/h.

Wednesday, November 4, 2026

Mid-Morning
Big Flat Lake Weather - 2026-11-04 - Morning - Cloudy
53°F 12°C
Cloudy
Mid-Afternoon
Big Flat Lake Weather - 2026-11-04 - Afternoon - Partly Cloudy
60°F 15°C
Partly Cloudy
Early-Evening
Big Flat Lake Weather - 2026-11-04 - Evening - Partly Cloudy
55°F 13°C
Partly Cloudy
Mildly cool near 60°F 15°C, cloudy in the morning, partly cloudy in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds turning from the NNW to the N at 6 mph 9 km/h. Gusts up to 20 mph 31 km/h.

Thursday, November 5, 2026

Mid-Morning
Big Flat Lake Weather - 2026-11-05 - Morning - Partly Cloudy
56°F 13°C
Partly Cloudy
Mid-Afternoon
Big Flat Lake Weather - 2026-11-05 - Afternoon - Partly Cloudy
62°F 17°C
Partly Cloudy
Early-Evening
Big Flat Lake Weather - 2026-11-05 - Evening - Scattered Showers
54°F 12°C
Scattered Showers
Comfortable at 62°F 17°C, scattered downpours possible, with increasing humidity and steady pressure.

Friday, November 6, 2026

Mid-Morning
Big Flat Lake Weather - 2026-11-06 - Morning - Sunny
51°F 11°C
Sunny
Mid-Afternoon
Big Flat Lake Weather - 2026-11-06 - Afternoon - Sunny
57°F 14°C
Sunny
Early-Evening
Big Flat Lake Weather - 2026-11-06 - Evening - Partly Cloudy
51°F 11°C
Partly Cloudy
Crisp with a high near 57°F 14°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure.

Saturday, November 7, 2026

Mid-Morning
Big Flat Lake Weather - 2026-11-07 - Morning - Partly Cloudy
46°F 8°C
Partly Cloudy
Mid-Afternoon
Big Flat Lake Weather - 2026-11-07 - Afternoon - Partly Cloudy
54°F 12°C
Partly Cloudy
Early-Evening
Big Flat Lake Weather - 2026-11-07 - Evening - Partly Cloudy
48°F 9°C
Partly Cloudy
Brisk around 54°F 12°C, partly cloudy in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure.

Sunday, November 8, 2026

Mid-Morning
Big Flat Lake Weather - 2026-11-08 - Morning - Partly Cloudy
52°F 11°C
Partly Cloudy
Mid-Afternoon
Big Flat Lake Weather - 2026-11-08 - Afternoon - Partly Cloudy
61°F 16°C
Partly Cloudy
Early-Evening
Big Flat Lake Weather - 2026-11-08 - Evening - Partly Cloudy
55°F 13°C
Partly Cloudy
Mildly cool near 61°F 16°C, partly cloudy in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds out of the S at 8 mph 13 km/h.

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Weather by the Numbers

Mon, 26th
Big Flat Lake IL Weather - Monday, Oct 26, 2026 - Overcast
Hi: 77°F 25°C
Lo: 56°F 13°C
Sunrise 07:19 AM
Sunset 06:05 PM
Wind SSW 6 mph10 km/h
Dew Point 41°F5°C
uv Index 3
Barometric Pressure 30.3 in1026 mb
POP 9% *
Humidity 31%
Tue, 27th
Big Flat Lake IL Weather - Tuesday, Oct 27, 2026 - Overcast
Hi: 75°F 24°C
Lo: 54°F 12°C
Sunrise 07:20 AM
Sunset 06:04 PM
Wind S 9 mph14 km/h
Dew Point 43°F6°C
uv Index 3
Barometric Pressure 30.24 in1024 mb
POP 10% *
Humidity 34%
Wed, 28th
Big Flat Lake IL Weather - Wednesday, Oct 28, 2026 - Overcast
Hi: 80°F 26°C
Lo: 56°F 13°C
Sunrise 07:21 AM
Sunset 06:02 PM
Wind S 8 mph12 km/h
Dew Point 45°F7°C
uv Index 3
Barometric Pressure 30.21 in1023 mb
POP 10% *
Humidity 39%
Thu, 29th
Big Flat Lake IL Weather - Thursday, Oct 29, 2026 - Sunny
Hi: 83°F 28°C
Lo: 57°F 14°C
Sunrise 07:22 AM
Sunset 06:01 PM
Wind SSW 13 mph20 km/h
Dew Point 39°F4°C
uv Index 4
Barometric Pressure 30.18 in1022 mb
POP 0% *
Humidity 25%
Fri, 30th
Big Flat Lake IL Weather - Friday, Oct 30, 2026 - Overcast
Hi: 81°F 27°C
Lo: 59°F 15°C
Sunrise 07:23 AM
Sunset 06:00 PM
Wind S 8 mph12 km/h
Dew Point 39°F4°C
uv Index 6
Barometric Pressure 30.21 in1023 mb
POP 9% *
Humidity 26%
Sat, 31st
Big Flat Lake IL Weather - Saturday, Oct 31, 2026 - Patchy Rain Nearby
Hi: 68°F 20°C
Lo: 61°F 16°C
Sunrise 07:24 AM
Sunset 05:59 PM
Wind SSE 4 mph7 km/h
Dew Point 55°F13°C
uv Index 4
Barometric Pressure 30.15 in1021 mb
POP 38% *
Humidity 68%
Sun, 1st
Big Flat Lake IL Weather - Sunday, Nov 1, 2026 - Patchy Rain Nearby
Hi: 70°F 21°C
Lo: 61°F 16°C
Sunrise 07:25 AM
Sunset 05:58 PM
Wind SSE 5 mph8 km/h
Dew Point 59°F15°C
uv Index 5
Barometric Pressure 30.09 in1019 mb
POP 17% *
Humidity 68%
Mon, 2nd
Big Flat Lake IL Weather - Monday, Nov 2, 2026 - Overcast
Hi: 73°F 23°C
Lo: 62°F 17°C
Sunrise 06:26 AM
Sunset 04:57 PM
Wind S 14 mph23 km/h
Dew Point 63°F17°C
uv Index 5
Barometric Pressure 29.88 in1012 mb
POP 19% *
Humidity 72%
Tue, 3rd
Big Flat Lake IL Weather - Tuesday, Nov 3, 2026 - Partly Cloudy
Hi: 66°F 19°C
Lo: 53°F 12°C
Sunrise 06:27 AM
Sunset 04:56 PM
Wind WNW 12 mph19 km/h
Dew Point 45°F7°C
uv Index 5
Barometric Pressure 29.85 in1011 mb
POP 7% *
Humidity 54%
Wed, 4th
Big Flat Lake IL Weather - Wednesday, Nov 4, 2026 - Sunny
Hi: 60°F 15°C
Lo: 46°F 8°C
Sunrise 06:28 AM
Sunset 04:54 PM
Wind NNW 9 mph15 km/h
Dew Point 34°F1°C
uv Index 5
Barometric Pressure 29.94 in1014 mb
POP 2% *
Humidity 38%
Thu, 5th
Big Flat Lake IL Weather - Thursday, Nov 5, 2026 - Partly Cloudy
Hi: 62°F 17°C
Lo: 49°F 10°C
Sunrise 06:29 AM
Sunset 04:53 PM
Wind N 7 mph12 km/h
Dew Point 40°F4°C
uv Index 5
Barometric Pressure 29.88 in1012 mb
POP 5% *
Humidity 43%
Fri, 6th
Big Flat Lake IL Weather - Friday, Nov 6, 2026 - Partly Cloudy
Hi: 57°F 14°C
Lo: 45°F 7°C
Sunrise 06:30 AM
Sunset 04:52 PM
Wind NW 4 mph7 km/h
Dew Point 41°F5°C
uv Index 4
Barometric Pressure 29.91 in1013 mb
POP 5% *
Humidity 53%
Sat, 7th
Big Flat Lake IL Weather - Saturday, Nov 7, 2026 - Partly Cloudy
Hi: 54°F 12°C
Lo: 38°F 4°C
Sunrise 06:31 AM
Sunset 04:51 PM
Wind W 3 mph5 km/h
Dew Point 35°F2°C
uv Index 4
Barometric Pressure 30 in1016 mb
POP 5% *
Humidity 49%
Sun, 8th
Big Flat Lake IL Weather - Sunday, Nov 8, 2026 - Cloudy
Hi: 61°F 16°C
Lo: 43°F 6°C
Sunrise 06:32 AM
Sunset 04:50 PM
Wind S 9 mph14 km/h
Dew Point 44°F6°C
uv Index 4
Barometric Pressure 29.94 in1014 mb
POP 8% *
Humidity 53%
* POP = Probability of Precipitation. Data for 12:00 PM.