Seneca, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Mostly Clear 78°F 26°C Heat Index: 78°F	Observed at: Seneca, IL	Elevation: 910 ft | 277 m
	Last Updated: July 27, 12:15 AM Timezone: GMT -5/-4
	Sky Conditions: Mostly Clear	Temperature: 78°F | 26°C
	Pressure: 29.3 in | 992.3 mb	Dewpoint: 75°F | 24°C
	Humidity: 88%	Wind: S 5 mph | S 8 kph
	Feels Like: 87°F | 31°C	Visibility: 29.4 mi | 47.2 km
	Lat/Long: 41.3111 | -88.6097	Sunrise: 5:45 AM   Sunset: 8:16 PM

7 Day Graphical Forecast

Valid: 4:42 PM 7/29/2026

Tonight Overcast 75 °F 17% Chance Precipitation Tuesday Overcast 82 |65 °F 4% Chance Precipitation Wednesday Overcast 82 |62 °F 1% Chance Precipitation Thursday Overcast 83 |66 °F 5% Chance Precipitation Friday Showers 72 |67 °F 40% Chance Precipitation Saturday Light Drizzle 80 |66 °F 28% Chance Precipitation Sunday Clear 86 |66 °F 16% Chance Precipitation

7 Hour Graphical Forecast

Valid: 4:42 PM 7/29/2026

4 PM Clear 82 °F 1% Chance Precipitation

5 PM Clear 82 °F 1% Chance Precipitation

6 PM Clear 82 °F 1% Chance Precipitation

7 PM Clear 80 °F 1% Chance Precipitation

8 PM Clear 74 °F 1% Chance Precipitation

9 PM Clear 72 °F 1% Chance Precipitation

10 PM Clear 71 °F 1% Chance Precipitation

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

7 Day & Night Weather Forecast for Seneca, IL - (Fahrenheit & Celsius) Valid: 4:42 PM 7/29/2026 Tonight Overcast with a low around 75°F [24°C]. SW wind to around 14 mph [23 kph], with gusts to near 30 mph [49 kph]. Chance of precipitation 17% with QPF of 0.00 in [0.0 mm]. Tuesday Overcast with a high near 82°F [28°C]. NNE wind to around 13 mph [21 kph], with gusts to near 26 mph [42 kph]. Dewpoint near 75°F [24°C] with humidity of 95%. Pressure around 29.30 in [992.3 mb]. UV Index: 7.3. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 65°F [18°C]. NNE wind to around 13 mph [21 kph], with gusts to near 26 mph [42 kph]. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Wednesday Overcast with a high near 82°F [28°C]. ENE wind to around 7 mph [11 kph], with gusts to near 11 mph [18 kph]. Dewpoint near 75°F [24°C] with humidity of 86%. Pressure around 29.30 in [992.3 mb]. UV Index: 7.35. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 62°F [16°C]. ENE wind to around 7 mph [11 kph], with gusts to near 11 mph [18 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Overcast with a high near 83°F [28°C]. SSW wind to around 11 mph [17 kph], with gusts to near 16 mph [25 kph]. Dewpoint near 75°F [24°C] with humidity of 92%. Pressure around 29.30 in [992.3 mb]. UV Index: 6.65. Chance of precipitation 5% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 66°F [19°C]. SSW wind to around 11 mph [17 kph], with gusts to near 16 mph [25 kph]. Chance of precipitation 5% with QPF of 0.00 in [0.0 mm]. Friday Showers with a high near 72°F [22°C]. SE wind to around 11 mph [18 kph], with gusts to near 25 mph [40 kph]. Dewpoint near 75°F [24°C] with humidity of 99%. Pressure around 29.30 in [992.3 mb]. UV Index: 0.75. Chance of precipitation 40% with QPF of 1.03 in [26.2 mm]. Friday Night Showers with a low around 67°F [19°C]. SE wind to around 11 mph [18 kph], with gusts to near 25 mph [40 kph]. Chance of precipitation 40% with QPF of 1.03 in [26.2 mm]. Saturday Light Drizzle with a high near 80°F [27°C]. NNE wind to around 11 mph [17 kph], with gusts to near 18 mph [28 kph]. Dewpoint near 75°F [24°C] with humidity of 99%. Pressure around 29.30 in [992.3 mb]. UV Index: 6.7. Chance of precipitation 28% with QPF of 0.04 in [0.9 mm]. Saturday Night Light Drizzle with a low around 66°F [19°C]. NNE wind to around 11 mph [17 kph], with gusts to near 18 mph [28 kph]. Chance of precipitation 28% with QPF of 0.04 in [0.9 mm]. Sunday Clear with a high near 86°F [30°C]. WNW wind to around 8 mph [12 kph], with gusts to near 9 mph [15 kph]. Dewpoint near 75°F [24°C] with humidity of 94%. Pressure around 29.30 in [992.3 mb]. UV Index: 7.2. Chance of precipitation 16% with QPF of 0.00 in [0.0 mm]. Sunday Night Clear with a low around 66°F [19°C]. WNW wind to around 8 mph [12 kph], with gusts to near 9 mph [15 kph]. Chance of precipitation 16% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Seneca, IL

Tonight: 0.0 mm | 0.00 in

Tuesday: 0.0 mm | 0.00 in

Tuesday Night: 0.0 mm | 0.00 in

Wednesday: 0.0 mm | 0.00 in

Wednesday Night: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 26.2 mm | 1.03 in

Friday Night: 26.2 mm | 1.03 in

Saturday: 0.9 mm | 0.04 in

Saturday Night: 0.9 mm | 0.04 in

Sunday: 0.0 mm | 0.00 in

Sunday Night: 0.0 mm | 0.00 in

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

Tonight: SW @ 23 kph | 14 mph

Tuesday: NNE @ 21 kph | 13 mph

Tuesday Night: NNE @ 21 kph | 13 mph

Wednesday: ENE @ 11 kph | 7 mph

Wednesday Night: ENE @ 11 kph | 7 mph

Thursday: SSW @ 17 kph | 11 mph

Thursday Night: SSW @ 17 kph | 11 mph

Friday: SE @ 18 kph | 11 mph

Friday Night: SE @ 18 kph | 11 mph

Saturday: NNE @ 17 kph | 11 mph

Saturday Night: NNE @ 17 kph | 11 mph

Sunday: WNW @ 12 kph | 8 mph

Sunday Night: WNW @ 12 kph | 8 mph

7 Day and Night - Maximum Humidity Forecast for Seneca, IL

Tonight: 96 %

Tuesday: 95 %

Tuesday Night: 95 %

Wednesday: 86 %

Wednesday Night: 86 %

Thursday: 92 %

Thursday Night: 92 %

Friday: 99 %

Friday Night: 99 %

Saturday: 99 %

Saturday Night: 99 %

Sunday: 94 %

Sunday Night: 94 %

7 Day and Night - Snowfall Totals Forecast for Seneca, IL

Tonight: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

Wednesday: 0.0 cm | 0.00 in

Wednesday Night: 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

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