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Niantic, IL Weather Tomorrow

Get the forecast you need for Niantic tomorrow with an extended 5 day weather outlook featuring precipitation potential, daytime and nighttime forecasts, temperature highs and lows in Fahrenheit and Celsius, sunrise and sunset times, cloud cover, wind chill, wind speed, and wind direction throughout the Niantic area and around Macon county, Illinois.
Updated: Sat Aug 29th 2026 1:15 AM CDT
Niantic, IL Weather – 8-29 – Overcast
81° / 62°
Overcast
Highs will reach 81°F with lows near 62°F in Niantic, where overcast is. There might be light rainfall having a 11% chance. Wind will be moderate, blowing around 11mph on average and gusts of 23.1mph at 11 PM. The humidity will be on the higher side, averaging about 65%, the maximum being 90% at 6 AM and 47% being its lowest at 2 PM. Barometric pressure is its highest of 30.15inHg at 8 AM, a lowest point of 29.99inHg at 8 PM with an avg 30.07inHg.
Niantic, IL Weather – 8-30 – Overcast
90° / 69°

Weather Tomorrow

Overcast
Niantic may see cloud-filled skies, with daytime highs of 90°F and overnight lows near 69°F. There might be light rainfall having a 20% chance with an estimated 0.01in. Wind will be moderate, blowing around 15mph on average and gusts of 34.3mph at 10 PM. Humidity levels should be comfortable, sitting around 58% on average, the maximum being 74% at 8 AM and 46% being its lowest at 11 PM. Barometric pressure is its highest of 30.04inHg at 9 AM, a lowest point of 29.87inHg at 7 PM with an avg 29.96inHg.
Niantic, IL Weather – 8-31 – Overcast
93° / 78°
Overcast
It will be overcast in Niantic, with a high of 93°F and a low of 78°F. There's a very small chance of rainfall, only about 6%. Wind will be moderate, blowing around 18mph on average and gusts of 37.5mph at 11 PM. Humidity levels should be comfortable, sitting around 45% on average, the maximum being 57% at 7 PM and 35% being its lowest at 12 PM. Barometric pressure is its highest of 29.95inHg at 11 AM, a lowest point of 29.83inHg at 8 PM with an avg 29.9inHg.
Niantic, IL Weather – 9-1 – Sunny
99° / 76°
Sunny
Niantic may see a sunny day, with daytime highs of 99°F and overnight lows near 76°F. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 17mph on average and gusts of 38.9mph at 12 AM. Humidity levels should be comfortable, sitting around 43% on average, the maximum being 70% at 7 AM and 27% being its lowest at 3 PM. Barometric pressure is its highest of 29.98inHg at 11 AM, a lowest point of 29.84inHg at 12 AM with an avg 29.9inHg.
Niantic, IL Weather – 9-2 – Sunny
102° / 80°
Sunny
In Niantic, a sunny day is likely with a high near 102°F and a low around 80°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 19mph on average and gusts of 36.1mph at 5 AM. Humidity levels should be comfortable, sitting around 48% on average, the maximum being 80% at 11 PM and 24% being its lowest at 4 PM. Barometric pressure is its highest of 29.93inHg at 11 PM, a lowest point of 29.83inHg at 4 PM with an avg 29.89inHg.
Niantic, IL Weather – 9-3 – Sunny
98° / 72°
Sunny
A sunny day is in the forecast for Niantic, with a high of 98°F and a low of 72°F. There's a moderate 36% chance of rainfall with an estimated 0.02in. Winds will be light at 10mph and gusts of 13.9mph at 7 PM. The humidity will be on the higher side, averaging about 62%, the maximum being 91% at 7 AM and 32% being its lowest at 3 PM. Barometric pressure is its highest of 30inHg at 10 AM, a lowest point of 29.88inHg at 7 PM with an avg 29.94inHg.

Currently

Clear 66°F
30.11 inHg.
Barometer
68%
Humidity
SE 9.4 mph
Wind
Clear

5 Day Forecast Nearby

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