Big Bay, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 69°F 21°C	Observed at: Big Bay, IL	Elevation: 391 ft | 119 m
	Last Updated: July 29, 5:30 AM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 69°F | 21°C
	Pressure: 29.51 in | 999.3 mb	Dewpoint: 66°F | 19°C
	Humidity: 91%	Wind: N 3 mph | N 5 kph
	Feels Like: 73°F | 23°C	Visibility: 26.7 mi | 43 km
	Lat/Long: 37.3167 | -88.7217	Sunrise: 5:57 AM   Sunset: 8:05 PM

7 Day Graphical Forecast

Valid: 5:30 AM 7/29/2026

Tonight Overcast 68 °F 1% Chance Precipitation Thursday Overcast 85 |66 °F 0% Chance Precipitation Friday Light Showers 81 |65 °F 66% Chance Precipitation Saturday Light Showers 75 |68 °F 66% Chance Precipitation Sunday Overcast 82 |64 °F 33% Chance Precipitation Monday Clear 84 |64 °F 26% Chance Precipitation Tuesday Light Drizzle 88 |65 °F 24% Chance Precipitation

7 Hour Graphical Forecast

Valid: 5:30 AM 7/29/2026

5 AM Clear 69 °F 0% Chance Precipitation

6 AM Clear 68 °F 1% Chance Precipitation

7 AM Overcast 69 °F 1% Chance Precipitation

8 AM Mostly Clear 71 °F 1% Chance Precipitation

9 AM Clear 73 °F 1% Chance Precipitation

10 AM Clear 76 °F 0% Chance Precipitation

11 AM Clear 79 °F 0% Chance Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index

7 Day & Night Weather Forecast for Big Bay, IL - (Fahrenheit & Celsius) Valid: 5:30 AM 7/29/2026 Tonight Overcast with a low around 68°F [20°C]. NNE wind to around 7 mph [12 kph], with gusts to near 18 mph [29 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Overcast with a high near 85°F [29°C]. NE wind to around 7 mph [12 kph], with gusts to near 12 mph [19 kph]. Dewpoint near 66°F [19°C] with humidity of 84%. Pressure around 29.51 in [999.3 mb]. UV Index: 7.65. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 66°F [19°C]. NE wind to around 7 mph [12 kph], with gusts to near 12 mph [19 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Friday Light Showers with a high near 81°F [27°C]. SE wind to around 10 mph [16 kph], with gusts to near 26 mph [41 kph]. Dewpoint near 66°F [19°C] with humidity of 94%. Pressure around 29.51 in [999.3 mb]. UV Index: 6.25. Chance of precipitation 66% with QPF of 0.11 in [2.9 mm]. Friday Night Light Showers with a low around 65°F [18°C]. SE wind to around 10 mph [16 kph], with gusts to near 26 mph [41 kph]. Chance of precipitation 66% with QPF of 0.11 in [2.9 mm]. Saturday Light Showers with a high near 75°F [24°C]. NNW wind to around 12 mph [20 kph], with gusts to near 28 mph [45 kph]. Dewpoint near 66°F [19°C] with humidity of 98%. Pressure around 29.51 in [999.3 mb]. UV Index: 1.65. Chance of precipitation 66% with QPF of 0.11 in [2.8 mm]. Saturday Night Light Showers with a low around 68°F [20°C]. NNW wind to around 12 mph [20 kph], with gusts to near 28 mph [45 kph]. Chance of precipitation 66% with QPF of 0.11 in [2.8 mm]. Sunday Overcast with a high near 82°F [28°C]. NNE wind to around 14 mph [23 kph], with gusts to near 28 mph [45 kph]. Dewpoint near 66°F [19°C] with humidity of 96%. Pressure around 29.51 in [999.3 mb]. UV Index: 7.5. Chance of precipitation 33% with QPF of 0.00 in [0.0 mm]. Sunday Night Overcast with a low around 64°F [18°C]. NNE wind to around 14 mph [23 kph], with gusts to near 28 mph [45 kph]. Chance of precipitation 33% with QPF of 0.00 in [0.0 mm]. Monday Clear with a high near 84°F [29°C]. NE wind to around 11 mph [18 kph], with gusts to near 22 mph [35 kph]. Dewpoint near 66°F [19°C] with humidity of 96%. Pressure around 29.51 in [999.3 mb]. UV Index: 7.5. Chance of precipitation 26% with QPF of 0.00 in [0.0 mm]. Monday Night Clear with a low around 64°F [18°C]. NE wind to around 11 mph [18 kph], with gusts to near 22 mph [35 kph]. Chance of precipitation 26% with QPF of 0.00 in [0.0 mm]. Tuesday Light Drizzle with a high near 88°F [31°C]. E wind to around 7 mph [11 kph], with gusts to near 15 mph [25 kph]. Dewpoint near 66°F [19°C] with humidity of 92%. Pressure around 29.51 in [999.3 mb]. UV Index: 7.5. Chance of precipitation 24% with QPF of 0.04 in [0.9 mm]. Tuesday Night Light Drizzle with a low around 65°F [18°C]. E wind to around 7 mph [11 kph], with gusts to near 15 mph [25 kph]. Chance of precipitation 24% with QPF of 0.04 in [0.9 mm].

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7 Day and Night - QPF Forecast for Big Bay, IL

Tonight: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 2.9 mm | 0.11 in

Friday Night: 2.9 mm | 0.11 in

Saturday: 2.8 mm | 0.11 in

Saturday Night: 2.8 mm | 0.11 in

Sunday: 0.0 mm | 0.00 in

Sunday Night: 0.0 mm | 0.00 in

Monday: 0.0 mm | 0.00 in

Monday Night: 0.0 mm | 0.00 in

Tuesday: 0.9 mm | 0.04 in

Tuesday Night: 0.9 mm | 0.04 in

7 Day and Night - Maximum Wind Speed Forecast for Big Bay, IL

Tonight: NNE @ 12 kph | 7 mph

Thursday: NE @ 12 kph | 7 mph

Thursday Night: NE @ 12 kph | 7 mph

Friday: SE @ 16 kph | 10 mph

Friday Night: SE @ 16 kph | 10 mph

Saturday: NNW @ 20 kph | 12 mph

Saturday Night: NNW @ 20 kph | 12 mph

Sunday: NNE @ 23 kph | 14 mph

Sunday Night: NNE @ 23 kph | 14 mph

Monday: NE @ 18 kph | 11 mph

Monday Night: NE @ 18 kph | 11 mph

Tuesday: E @ 11 kph | 7 mph

Tuesday Night: E @ 11 kph | 7 mph

7 Day and Night - Maximum Humidity Forecast for Big Bay, IL

Tonight: 94 %

Thursday: 84 %

Thursday Night: 84 %

Friday: 94 %

Friday Night: 94 %

Saturday: 98 %

Saturday Night: 98 %

Sunday: 96 %

Sunday Night: 96 %

Monday: 96 %

Monday Night: 96 %

Tuesday: 92 %

Tuesday Night: 92 %

7 Day and Night - Snowfall Totals Forecast for Big Bay, IL

Tonight: 0.0 cm | 0.00 in

Thursday: 0.0 cm | 0.00 in

Thursday Night: 0.0 cm | 0.00 in

Friday: 0.0 cm | 0.00 in

Friday Night: 0.0 cm | 0.00 in

Saturday: 0.0 cm | 0.00 in

Saturday Night: 0.0 cm | 0.00 in

Sunday: 0.0 cm | 0.00 in

Sunday Night: 0.0 cm | 0.00 in

Monday: 0.0 cm | 0.00 in

Monday Night: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

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