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Niantic IL Weather - Clear - 57°F
Clear
57°F
Updated 3:51 am
Feels Like 62°F
Humidity 93%
Wind N 0 mph
Barometer  30.11 in
Dew Point 55°F
Niantic IL Weather - Clear - 14°C
Clear
14°C
Updated 3:51 am
Feels Like 17°C
Humidity 93%
Wind N 0 km/h
Barometer  101.9 kPa
Dew Point 13°C
Niantic, IL Weather and Current Conditionsniantic il weather forecast

Niantic, IL Weather Forecast

Niantic Illinois WeatherNiantic, Illinois Weather Weather Forecast
14 day API Niantic, IL weather forecast. Note. Our 7-day weather forecast for Niantic, Illinois is our most reliable and accurate forecast. This model should only be used as a likely scenario. Forecasting more than 7 days is difficult.
Niantic, IL Weather Forecast Dated: 351 AM Tue Sep 08 2026
Expect a very warm period with a mix of sun and clouds and frequent chances of rain over the coming period. moderate humidity and no major pressure swings will dominate.

Tuesday, September 8, 2026

Mid-Morning
Niantic Weather - 2026-09-08 - Morning - Cloudy
74°F 23°C
Cloudy
Mid-Afternoon
Niantic Weather - 2026-09-08 - Afternoon - Partly Cloudy
92°F 33°C
Partly Cloudy
Early-Evening
Niantic Weather - 2026-09-08 - Evening - Cloudy
84°F 29°C
Cloudy
Very hot with temperatures reaching 92°F 33°C, cloudy through the afternoon, turning overcast this evening, with lower humidity and steady pressure. Winds out of the SSW at 7 mph 11 km/h.

Wednesday, September 9, 2026

Mid-Morning
Niantic Weather - 2026-09-09 - Morning - Scattered Showers
81°F 27°C
Scattered Showers
Mid-Afternoon
Niantic Weather - 2026-09-09 - Afternoon - Partly Cloudy
93°F 34°C
Partly Cloudy
Early-Evening
Niantic Weather - 2026-09-09 - Evening - Light Showers
78°F 26°C
Light Showers
Hot and sweltering around 93°F 34°C (heat index 96°F 35°C), scattered downpours possible, with increasing humidity and steady pressure. Winds switching from the WSW to the SW at 8 mph 13 km/h.

Thursday, September 10, 2026

Mid-Morning
Niantic Weather - 2026-09-10 - Morning - Overcast
73°F 23°C
Overcast
Mid-Afternoon
Niantic Weather - 2026-09-10 - Afternoon - Overcast
81°F 27°C
Overcast
Early-Evening
Niantic Weather - 2026-09-10 - Evening - Scattered Showers
75°F 24°C
Scattered Showers
Very warm near 81°F 27°C, though humidity makes it feel like 84°F 29°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds moving from the NNW to the NE at 8 mph 12 km/h.

Friday, September 11, 2026

Mid-Morning
Niantic Weather - 2026-09-11 - Morning - Cloudy
72°F 22°C
Cloudy
Mid-Afternoon
Niantic Weather - 2026-09-11 - Afternoon - Sunny
90°F 32°C
Sunny
Early-Evening
Niantic Weather - 2026-09-11 - Evening - Sunny
81°F 27°C
Sunny
Hot temperatures near 90°F 32°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds swinging from the SSE to the SE at 8 mph 13 km/h.

Saturday, September 12, 2026

Mid-Morning
Niantic Weather - 2026-09-12 - Morning - Overcast
74°F 23°C
Overcast
Mid-Afternoon
Niantic Weather - 2026-09-12 - Afternoon - Sunny
93°F 34°C
Sunny
Early-Evening
Niantic Weather - 2026-09-12 - Evening - Sunny
88°F 31°C
Sunny
Hot and sweltering around 93°F 34°C (heat index 96°F 36°C), overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds shifting from the SW to the S at 7 mph 11 km/h.

Sunday, September 13, 2026

Mid-Morning
Niantic Weather - 2026-09-13 - Morning - Light Showers
77°F 25°C
Light Showers
Mid-Afternoon
Niantic Weather - 2026-09-13 - Afternoon - Sunny
98°F 37°C
Sunny
Early-Evening
Niantic Weather - 2026-09-13 - Evening - Partly Cloudy
92°F 33°C
Partly Cloudy
Very hot with temperatures reaching 98°F 37°C, morning showers, giving way to clearing skies, with lower humidity and barometric pressure falling. Winds turning from the SSW to the SSE at 12 mph 18 km/h. Gusts up to 22 mph 36 km/h.

Monday, September 14, 2026

Mid-Morning
Niantic Weather - 2026-09-14 - Morning - Sunny
87°F 30°C
Sunny
Mid-Afternoon
Niantic Weather - 2026-09-14 - Afternoon - Sunny
96°F 36°C
Sunny
Early-Evening
Niantic Weather - 2026-09-14 - Evening - Overcast
87°F 31°C
Overcast
Sizzling hot near 96°F 36°C with a heat index reaching 99°F 37°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds switching from the SSW to the SW at 10 mph 16 km/h.

Tuesday, September 15, 2026

Mid-Morning
Niantic Weather - 2026-09-15 - Morning - Scattered Showers
59°F 15°C
Scattered Showers
Mid-Afternoon
Niantic Weather - 2026-09-15 - Afternoon - Sunny
68°F 20°C
Sunny
Early-Evening
Niantic Weather - 2026-09-15 - Evening - Sunny
61°F 16°C
Sunny
Enjoyable around 68°F 20°C, scattered downpours possible, with lower humidity and steady pressure. Winds moving from the NW to the NNW at 11 mph 18 km/h. Gusts up to 21 mph 33 km/h.

Wednesday, September 16, 2026

Mid-Morning
Niantic Weather - 2026-09-16 - Morning - Sunny
55°F 13°C
Sunny
Mid-Afternoon
Niantic Weather - 2026-09-16 - Afternoon - Partly Cloudy
68°F 20°C
Partly Cloudy
Early-Evening
Niantic Weather - 2026-09-16 - Evening - Overcast
62°F 17°C
Overcast
Mild temperatures up to 68°F 20°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds swinging from the N to the NE at 8 mph 13 km/h.

Thursday, September 17, 2026

Mid-Morning
Niantic Weather - 2026-09-17 - Morning - Overcast
57°F 14°C
Overcast
Mid-Afternoon
Niantic Weather - 2026-09-17 - Afternoon - Overcast
72°F 22°C
Overcast
Early-Evening
Niantic Weather - 2026-09-17 - Evening - Overcast
67°F 20°C
Overcast
Mild with a high of 72°F 22°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling.

Friday, September 18, 2026

Mid-Morning
Niantic Weather - 2026-09-18 - Morning - Overcast
68°F 20°C
Overcast
Mid-Afternoon
Niantic Weather - 2026-09-18 - Afternoon - Overcast
81°F 27°C
Overcast
Early-Evening
Niantic Weather - 2026-09-18 - Evening - Overcast
76°F 25°C
Overcast
Warm and summery near 81°F 27°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds shifting from the S to the SSE at 8 mph 14 km/h.

Saturday, September 19, 2026

Mid-Morning
Niantic Weather - 2026-09-19 - Morning - Light Showers
56°F 13°C
Light Showers
Mid-Afternoon
Niantic Weather - 2026-09-19 - Afternoon - Overcast
61°F 16°C
Overcast
Early-Evening
Niantic Weather - 2026-09-19 - Evening - Overcast
56°F 14°C
Overcast
Cool with a high near 61°F 16°C, morning showers, giving way to clearing skies, with lower humidity and barometric pressure rising. Winds turning from the ESE to the NNE at 13 mph 20 km/h. Gusts up to 22 mph 35 km/h.

Sunday, September 20, 2026

Mid-Morning
Niantic Weather - 2026-09-20 - Morning - Partly Cloudy
54°F 12°C
Partly Cloudy
Mid-Afternoon
Niantic Weather - 2026-09-20 - Afternoon - Sunny
67°F 20°C
Sunny
Early-Evening
Niantic Weather - 2026-09-20 - Evening - Sunny
60°F 15°C
Sunny
Refreshing around 67°F 20°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and barometric pressure falling. Winds ENE at 8 mph 13 km/h.

Monday, September 21, 2026

Mid-Morning
Niantic Weather - 2026-09-21 - Morning - Sunny
57°F 14°C
Sunny
Mid-Afternoon
Niantic Weather - 2026-09-21 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
Niantic Weather - 2026-09-21 - Evening - Sunny
64°F 18°C
Sunny
Mild temperatures up to 73°F 23°C, sunny throughout the day, with steady humidity and steady pressure. Winds out of the NE at 6 mph 9 km/h.

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Weather by the Numbers

Tue, 8th
Niantic IL Weather - Tuesday, Sep 8, 2026 - Partly Cloudy
Hi: 92°F 33°C
Lo: 60°F 16°C
Sunrise 06:31 AM
Sunset 07:16 PM
Wind SSW 8 mph13 km/h
Dew Point 49°F9°C
uv Index 7
Barometric Pressure 30.09 in1019 mb
POP 2% *
Humidity 28%
Wed, 9th
Niantic IL Weather - Wednesday, Sep 9, 2026 - Patchy Rain Nearby
Hi: 93°F 34°C
Lo: 73°F 23°C
Sunrise 06:32 AM
Sunset 07:15 PM
Wind WNW 12 mph19 km/h
Dew Point 63°F17°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 17% *
Humidity 44%
Thu, 10th
Niantic IL Weather - Thursday, Sep 10, 2026 - Light Rain Shower
Hi: 83°F 28°C
Lo: 69°F 21°C
Sunrise 06:32 AM
Sunset 07:13 PM
Wind NNE 0 mph1 km/h
Dew Point 66°F19°C
uv Index 4
Barometric Pressure 29.94 in1014 mb
POP 57% *
Humidity 57%
Fri, 11th
Niantic IL Weather - Friday, Sep 11, 2026 - Cloudy
Hi: 91°F 33°C
Lo: 65°F 18°C
Sunrise 06:33 AM
Sunset 07:11 PM
Wind SSW 9 mph15 km/h
Dew Point 64°F18°C
uv Index 6
Barometric Pressure 29.88 in1012 mb
POP 7% *
Humidity 50%
Sat, 12th
Niantic IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 95°F 35°C
Lo: 69°F 20°C
Sunrise 06:34 AM
Sunset 07:10 PM
Wind SW 6 mph10 km/h
Dew Point 65°F18°C
uv Index 8
Barometric Pressure 29.88 in1012 mb
POP 2% *
Humidity 50%
Sun, 13th
Niantic IL Weather - Sunday, Sep 13, 2026 - Light Rain Shower
Hi: 99°F 37°C
Lo: 74°F 23°C
Sunrise 06:35 AM
Sunset 07:08 PM
Wind S 15 mph23 km/h
Dew Point 63°F17°C
uv Index 7
Barometric Pressure 29.91 in1013 mb
POP 17% *
Humidity 44%
Mon, 14th
Niantic IL Weather - Monday, Sep 14, 2026 - Sunny
Hi: 97°F 36°C
Lo: 75°F 24°C
Sunrise 06:36 AM
Sunset 07:06 PM
Wind SW 16 mph26 km/h
Dew Point 63°F17°C
uv Index 8
Barometric Pressure 29.88 in1012 mb
POP 1% *
Humidity 36%
Tue, 15th
Niantic IL Weather - Tuesday, Sep 15, 2026 - Overcast
Hi: 72°F 22°C
Lo: 55°F 13°C
Sunrise 06:37 AM
Sunset 07:05 PM
Wind NW 15 mph24 km/h
Dew Point 42°F5°C
uv Index 4
Barometric Pressure 30.15 in1021 mb
POP 3% *
Humidity 45%
Wed, 16th
Niantic IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 68°F 20°C
Lo: 47°F 8°C
Sunrise 06:38 AM
Sunset 07:03 PM
Wind N 11 mph18 km/h
Dew Point 36°F2°C
uv Index 5
Barometric Pressure 30.33 in1027 mb
POP 3% *
Humidity 36%
Thu, 17th
Niantic IL Weather - Thursday, Sep 17, 2026 - Overcast
Hi: 74°F 23°C
Lo: 52°F 11°C
Sunrise 06:39 AM
Sunset 07:01 PM
Wind E 6 mph10 km/h
Dew Point 38°F4°C
uv Index 4
Barometric Pressure 30.39 in1029 mb
POP 9% *
Humidity 37%
Fri, 18th
Niantic IL Weather - Friday, Sep 18, 2026 - Overcast
Hi: 81°F 27°C
Lo: 61°F 16°C
Sunrise 06:40 AM
Sunset 07:00 PM
Wind SSW 10 mph16 km/h
Dew Point 42°F6°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 9% *
Humidity 29%
Sat, 19th
Niantic IL Weather - Saturday, Sep 19, 2026 - Overcast
Hi: 75°F 24°C
Lo: 52°F 11°C
Sunrise 06:41 AM
Sunset 06:58 PM
Wind N 14 mph23 km/h
Dew Point 47°F8°C
uv Index 3
Barometric Pressure 30.21 in1023 mb
POP 18% *
Humidity 69%
Sun, 20th
Niantic IL Weather - Sunday, Sep 20, 2026 - Partly Cloudy
Hi: 68°F 20°C
Lo: 47°F 8°C
Sunrise 06:42 AM
Sunset 06:56 PM
Wind ENE 9 mph15 km/h
Dew Point 34°F1°C
uv Index 5
Barometric Pressure 30.24 in1024 mb
POP 1% *
Humidity 34%
Mon, 21st
Niantic IL Weather - Monday, Sep 21, 2026 - Sunny
Hi: 74°F 23°C
Lo: 49°F 9°C
Sunrise 06:43 AM
Sunset 06:55 PM
Wind ENE 5 mph9 km/h
Dew Point 36°F2°C
uv Index 5
Barometric Pressure 30.24 in1024 mb
POP 1% *
Humidity 32%
* POP = Probability of Precipitation. Data for 12:00 PM.