Niantic, IL Weather Forecast

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Niantic, IL Weather Forecast

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Niantic IL weather  - Overcast - 74°F
Overcast
74°F
Updated 6:06 pm
Feels Like 66°F
Humidity 41%
Wind N 12 mph
Barometer  30.11 in
Dew Point 49°F
Niantic IL weather  - Overcast - 23°C
Overcast
23°C
Updated 6:06 pm
Feels Like 19°C
Humidity 41%
Wind N 19 km/h
Barometer  101.9 kPa
Dew Point 9°C

Niantic Weather Forecast

TONIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY SATURDAY SATURDAY NIGHT
Niantic, IL Weather - Tonight Mostly Cloudy Niantic, IL Weather - Monday Mostly Sunny Niantic, IL Weather - Monday Night Mostly Clear Niantic, IL Weather - Tuesday Chance Of T-Storm Niantic, IL Weather - Tuesday Night Chance Of T-Storm Niantic, IL Weather - Wednesday Chance Of Showers Niantic, IL Weather - Wednesday Night Chance Of Showers Niantic, IL Weather - Thursday Chance Of Showers Niantic, IL Weather - Thursday Night Partly Cloudy Niantic, IL Weather - Friday Partly Cloudy Niantic, IL Weather - Saturday Chance Of Showers Niantic, IL Weather - Saturday Night Chance Of Showers
Mostly Cloudy Mostly Sunny Mostly Clear Chance of T-Storm Chance of T-Storm Chance of Showers Chance of Showers Chance of Showers Partly Cloudy Partly Cloudy Chance of Showers Chance of Showers
Lo: 59°FLo: 15°C Hi: 81°FHi: 27°C
Lo: 69°FLo: 21°C Hi: 95°FHi: 35°C
Lo: 69°FLo: 21°C Hi: 90°FHi: 32°C
Hi: 89°FHi: 32°C
Lo: 71°FLo: 22°C
Hi: 89°FHi: 32°C
Lo: 71°FLo: 22°C
Hi: 85°FHi: 29°C
Lo: 65°FLo: 18°C
Hi: 85°FHi: 29°C
Lo: 65°FLo: 18°C
Hi: 89°FHi: 32°C
Lo: 61°FLo: 16°C
POP: 50% POP: 50% POP: 50% POP: 40% POP: 40% POP: 30% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 437 PM CDT Sun Sep 13 2026 Niantic, IL Weather - WeatherWorld.com

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Issued: 150 PM CDT Sun Sep 13 2026

Key Messages

  • Pleasant sleeping weather is expected tonight, with low temperatures in the 50s. Some lows near 50 can`t be ruled out in a few areas north of I-74.
  • A significant temperature range is expected Tuesday through Thursday, based on placement of a stationary front. South of the front, highs in the mid 90s are likely, while low-mid 80s are more common north of it.
  • Rainfall will be most widespread north of this front as well. Chances of more than an inch of rain range from 50-70% near Galesb...