Niantic, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Mostly Clear 78°F 26°C Heat Index: 78°F	Observed at: Niantic, IL	Elevation: 721 ft | 220 m
	Last Updated: July 16, 10:15 PM Timezone: GMT -5/-4
	Sky Conditions: Mostly Clear	Temperature: 78°F | 26°C
	Pressure: 29.37 in | 994.6 mb	Dewpoint: 74°F | 23°C
	Humidity: 86%	Wind: SE 4 mph | SE 6 kph
	Feels Like: 87°F | 31°C	Visibility: 32 mi | 51.5 km
	Lat/Long: 39.8539 | -89.1661	Sunrise: 5:42 AM   Sunset: 8:23 PM

7 Day Graphical Forecast

Valid: 10:26 PM 7/16/2026

Tonight Overcast 71 °F 13% Chance Precipitation Friday Overcast 90 |73 °F 25% Chance Precipitation Saturday Drizzle 93 |74 °F 44% Chance Precipitation Sunday Drizzle 83 |68 °F 26% Chance Precipitation Monday Light Showers 88 |69 °F 10% Chance Precipitation Tuesday Overcast 87 |68 °F 14% Chance Precipitation Wednesday Partly Cloudy 72 |52 °F 3% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:26 PM 7/16/2026

10 PM Mostly Clear 79 °F 3% Chance Precipitation

11 PM Clear 77 °F 6% Chance Precipitation

12 AM Clear 77 °F 6% Chance Precipitation

1 AM Clear 76 °F 5% Chance Precipitation

2 AM Mostly Clear 75 °F 4% Chance Precipitation

3 AM Clear 74 °F 4% Chance Precipitation

4 AM Clear 74 °F 5% Chance Precipitation

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

7 Day & Night Weather Forecast for Niantic, IL - (Fahrenheit & Celsius) Valid: 10:26 PM 7/16/2026 Tonight Overcast with a low around 71°F [21°C]. SSE wind to around 6 mph [9 kph], with gusts to near 9 mph [14 kph]. Chance of precipitation 13% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 90°F [32°C]. WSW wind to around 10 mph [16 kph], with gusts to near 15 mph [24 kph]. Dewpoint near 74°F [23°C] with humidity of 96%. Pressure around 29.37 in [994.6 mb]. UV Index: 7.4. Chance of precipitation 25% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 73°F [23°C]. WSW wind to around 10 mph [16 kph], with gusts to near 15 mph [24 kph]. Chance of precipitation 25% with QPF of 0.00 in [0.0 mm]. Saturday Drizzle with a high near 93°F [34°C]. W wind to around 15 mph [24 kph], with gusts to near 28 mph [46 kph]. Dewpoint near 74°F [23°C] with humidity of 94%. Pressure around 29.37 in [994.6 mb]. UV Index: 7.7. Chance of precipitation 44% with QPF of 0.04 in [1.0 mm]. Saturday Night Drizzle with a low around 74°F [24°C]. W wind to around 15 mph [24 kph], with gusts to near 28 mph [46 kph]. Chance of precipitation 44% with QPF of 0.04 in [1.0 mm]. Sunday Drizzle with a high near 83°F [28°C]. E wind to around 8 mph [12 kph], with gusts to near 16 mph [25 kph]. Dewpoint near 74°F [23°C] with humidity of 96%. Pressure around 29.37 in [994.6 mb]. UV Index: 7.7. Chance of precipitation 26% with QPF of 0.04 in [1.0 mm]. Sunday Night Drizzle with a low around 68°F [20°C]. E wind to around 8 mph [12 kph], with gusts to near 16 mph [25 kph]. Chance of precipitation 26% with QPF of 0.04 in [1.0 mm]. Monday Light Showers with a high near 88°F [31°C]. S wind to around 11 mph [17 kph], with gusts to near 27 mph [44 kph]. Dewpoint near 74°F [23°C] with humidity of 92%. Pressure around 29.37 in [994.6 mb]. UV Index: 7.7. Chance of precipitation 10% with QPF of 0.14 in [3.6 mm]. Monday Night Light Showers with a low around 69°F [20°C]. S wind to around 11 mph [17 kph], with gusts to near 27 mph [44 kph]. Chance of precipitation 10% with QPF of 0.14 in [3.6 mm]. Tuesday Overcast with a high near 87°F [31°C]. WNW wind to around 20 mph [32 kph], with gusts to near 36 mph [58 kph]. Dewpoint near 74°F [23°C] with humidity of 85%. Pressure around 29.37 in [994.6 mb]. UV Index: 7.1. Chance of precipitation 14% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 68°F [20°C]. WNW wind to around 20 mph [32 kph], with gusts to near 36 mph [58 kph]. Chance of precipitation 14% with QPF of 0.00 in [0.0 mm]. Wednesday Partly Cloudy with a high near 72°F [22°C]. NNE wind to around 13 mph [21 kph], with gusts to near 27 mph [43 kph]. Dewpoint near 74°F [23°C] with humidity of 89%. Pressure around 29.37 in [994.6 mb]. UV Index: 7.5. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm]. Wednesday Night Partly Cloudy with a low around 52°F [11°C]. NNE wind to around 13 mph [21 kph], with gusts to near 27 mph [43 kph]. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Niantic, IL

Tonight: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 1.0 mm | 0.04 in

Saturday Night: 1.0 mm | 0.04 in

Sunday: 1.0 mm | 0.04 in

Sunday Night: 1.0 mm | 0.04 in

Monday: 3.6 mm | 0.14 in

Monday Night: 3.6 mm | 0.14 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

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

Tonight: SSE @ 9 kph | 6 mph

Friday: WSW @ 16 kph | 10 mph

Friday Night: WSW @ 16 kph | 10 mph

Saturday: W @ 24 kph | 15 mph

Saturday Night: W @ 24 kph | 15 mph

Sunday: E @ 12 kph | 8 mph

Sunday Night: E @ 12 kph | 8 mph

Monday: S @ 17 kph | 11 mph

Monday Night: S @ 17 kph | 11 mph

Tuesday: WNW @ 32 kph | 20 mph

Tuesday Night: WNW @ 32 kph | 20 mph

Wednesday: NNE @ 21 kph | 13 mph

Wednesday Night: NNE @ 21 kph | 13 mph

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

Tonight: 92 %

Friday: 96 %

Friday Night: 96 %

Saturday: 94 %

Saturday Night: 94 %

Sunday: 96 %

Sunday Night: 96 %

Monday: 92 %

Monday Night: 92 %

Tuesday: 85 %

Tuesday Night: 85 %

Wednesday: 89 %

Wednesday Night: 89 %

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

Tonight: 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

Wednesday: 0.0 cm | 0.00 in

Wednesday Night: 0.0 cm | 0.00 in

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