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Illiopolis IL Weather - Clear - 53°F
Clear
53°F
Updated 1:02 am
Feels Like 50°F
Humidity 71%
Wind N 8 mph
Barometer  30.25 in
Dew Point 44°F
Illiopolis IL Weather - Clear - 12°C
Clear
12°C
Updated 1:02 am
Feels Like 10°C
Humidity 71%
Wind N 13 km/h
Barometer  102.4 kPa
Dew Point 7°C
Illiopolis, IL Weather and Current Conditionsilliopolis il weather forecast

Illiopolis, IL Weather Forecast

Illiopolis Illinois WeatherIlliopolis, Illinois Weather Weather Forecast
Here is the API 14 day weather forecast for Illiopolis, Illinois. Note: The 7-day weather forecast for Illiopolis, IL is the most reliable and accurate weather forecast. This template should only be used as a probable scenario. Forecasting weather beyond the next 7 days is a challenge.
Illiopolis, IL Weather Forecast Dated: 102 AM Mon Oct 05 2026
Expect a mild stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Monday, October 5, 2026

Mid-Morning
Illiopolis Weather - 2026-10-05 - Morning - Sunny
58°F 14°C
Sunny
Mid-Afternoon
Illiopolis Weather - 2026-10-05 - Afternoon - Sunny
72°F 22°C
Sunny
Early-Evening
Illiopolis Weather - 2026-10-05 - Evening - Sunny
62°F 17°C
Sunny
Pleasant near 72°F 22°C, sunny throughout the day, with steady humidity and barometric pressure falling.

Tuesday, October 6, 2026

Mid-Morning
Illiopolis Weather - 2026-10-06 - Morning - Sunny
59°F 15°C
Sunny
Mid-Afternoon
Illiopolis Weather - 2026-10-06 - Afternoon - Sunny
77°F 25°C
Sunny
Early-Evening
Illiopolis Weather - 2026-10-06 - Evening - Sunny
67°F 19°C
Sunny
Comfortable with temperatures reaching 77°F 25°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds turning from the SSE to the S at 7 mph 12 km/h.

Wednesday, October 7, 2026

Mid-Morning
Illiopolis Weather - 2026-10-07 - Morning - Sunny
65°F 18°C
Sunny
Mid-Afternoon
Illiopolis Weather - 2026-10-07 - Afternoon - Sunny
84°F 29°C
Sunny
Early-Evening
Illiopolis Weather - 2026-10-07 - Evening - Sunny
74°F 24°C
Sunny
Quite warm around 84°F 29°C, sunny through the afternoon, turning cloudy this evening, with increasing humidity and steady pressure. Winds switching from the WSW to the N at 7 mph 11 km/h.

Thursday, October 8, 2026

Mid-Morning
Illiopolis Weather - 2026-10-08 - Morning - Partly Cloudy
61°F 16°C
Partly Cloudy
Mid-Afternoon
Illiopolis Weather - 2026-10-08 - Afternoon - Partly Cloudy
74°F 24°C
Partly Cloudy
Early-Evening
Illiopolis Weather - 2026-10-08 - Evening - Overcast
65°F 18°C
Overcast
Mild temperatures up to 74°F 24°C, cloudy through the afternoon, turning overcast this evening, with steady humidity and steady pressure. Winds moving from the N to the NE at 7 mph 11 km/h.

Friday, October 9, 2026

Mid-Morning
Illiopolis Weather - 2026-10-09 - Morning - Overcast
61°F 16°C
Overcast
Mid-Afternoon
Illiopolis Weather - 2026-10-09 - Afternoon - Overcast
73°F 23°C
Overcast
Early-Evening
Illiopolis Weather - 2026-10-09 - Evening - Overcast
63°F 18°C
Overcast
Mild with a high of 73°F 23°C, overcast throughout the day, with steady humidity and steady pressure.

Saturday, October 10, 2026

Mid-Morning
Illiopolis Weather - 2026-10-10 - Morning - Sunny
61°F 16°C
Sunny
Mid-Afternoon
Illiopolis Weather - 2026-10-10 - Afternoon - Sunny
80°F 27°C
Sunny
Early-Evening
Illiopolis Weather - 2026-10-10 - Evening - Sunny
71°F 22°C
Sunny
Warm and summery near 80°F 27°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds swinging from the E to the SE at 10 mph 15 km/h. Gusts up to 21 mph 34 km/h.

Sunday, October 11, 2026

Mid-Morning
Illiopolis Weather - 2026-10-11 - Morning - Partly Cloudy
69°F 21°C
Partly Cloudy
Mid-Afternoon
Illiopolis Weather - 2026-10-11 - Afternoon - Overcast
81°F 27°C
Overcast
Early-Evening
Illiopolis Weather - 2026-10-11 - Evening - Overcast
73°F 23°C
Overcast
Balmy with temperatures reaching 81°F 27°C, overcast throughout the day, with steady humidity and barometric pressure falling. Winds shifting from the S to the SE at 6 mph 9 km/h.

Monday, October 12, 2026

Mid-Morning
Illiopolis Weather - 2026-10-12 - Morning - Sunny
67°F 19°C
Sunny
Mid-Afternoon
Illiopolis Weather - 2026-10-12 - Afternoon - Sunny
80°F 27°C
Sunny
Early-Evening
Illiopolis Weather - 2026-10-12 - Evening - Sunny
73°F 23°C
Sunny
Quite warm around 80°F 27°C, cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure.

Tuesday, October 13, 2026

Mid-Morning
Illiopolis Weather - 2026-10-13 - Morning - Sunny
69°F 20°C
Sunny
Mid-Afternoon
Illiopolis Weather - 2026-10-13 - Afternoon - Partly Cloudy
83°F 28°C
Partly Cloudy
Early-Evening
Illiopolis Weather - 2026-10-13 - Evening - Scattered Showers
73°F 23°C
Scattered Showers
Warm temperatures up to 83°F 28°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds turning from the S to the E at 13 mph 20 km/h. Gusts up to 20 mph 32 km/h.

Wednesday, October 14, 2026

Mid-Morning
Illiopolis Weather - 2026-10-14 - Morning - Rain
60°F 15°C
Rain
Mid-Afternoon
Illiopolis Weather - 2026-10-14 - Afternoon - Scattered Showers
64°F 18°C
Scattered Showers
Early-Evening
Illiopolis Weather - 2026-10-14 - Evening - Overcast
57°F 14°C
Overcast
Mildly cool near 64°F 18°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure rising. Winds switching from the SE to the W at 14 mph 22 km/h. Gusts up to 24 mph 38 km/h.

Thursday, October 15, 2026

Mid-Morning
Illiopolis Weather - 2026-10-15 - Morning - Partly Cloudy
43°F 6°C
Partly Cloudy
Mid-Afternoon
Illiopolis Weather - 2026-10-15 - Afternoon - Overcast
49°F 10°C
Overcast
Early-Evening
Illiopolis Weather - 2026-10-15 - Evening - Partly Cloudy
46°F 8°C
Partly Cloudy
Chilly near 49°F 10°C, overcast in the morning, cloudy in the afternoon, and sunny this evening, with steady humidity and steady pressure. Winds tapering down from W 17 mph 27 km/h to WNW 8 mph 12 km/h.

Friday, October 16, 2026

Mid-Morning
Illiopolis Weather - 2026-10-16 - Morning - Sunny
50°F 10°C
Sunny
Mid-Afternoon
Illiopolis Weather - 2026-10-16 - Afternoon - Sunny
68°F 20°C
Sunny
Early-Evening
Illiopolis Weather - 2026-10-16 - Evening - Scattered Showers
60°F 16°C
Scattered Showers
Comfortable with temperatures reaching 68°F 20°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds swinging from the SSW to the WNW at 11 mph 17 km/h. Gusts up to 20 mph 32 km/h.

Saturday, October 17, 2026

Mid-Morning
Illiopolis Weather - 2026-10-17 - Morning - Sunny
50°F 10°C
Sunny
Mid-Afternoon
Illiopolis Weather - 2026-10-17 - Afternoon - Scattered Showers
57°F 14°C
Scattered Showers
Early-Evening
Illiopolis Weather - 2026-10-17 - Evening - Sunny
52°F 11°C
Sunny
Brisk around 57°F 14°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds shifting from the NNW to the NW at 8 mph 14 km/h.

Sunday, October 18, 2026

Mid-Morning
Illiopolis Weather - 2026-10-18 - Morning - Scattered Showers
48°F 9°C
Scattered Showers
Mid-Afternoon
Illiopolis Weather - 2026-10-18 - Afternoon - Scattered Showers
53°F 12°C
Scattered Showers
Early-Evening
Illiopolis Weather - 2026-10-18 - Evening - Overcast
49°F 9°C
Overcast
Cool and brisk at 53°F 12°C, scattered downpours possible, with lower humidity and steady pressure. Winds turning from the NW to the WSW at 7 mph 11 km/h.

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Weather by the Numbers

Mon, 5th
Illiopolis IL Weather - Monday, Oct 5, 2026 - Sunny
Hi: 72°F 22°C
Lo: 50°F 10°C
Sunrise 06:56 AM
Sunset 06:32 PM
Wind NE 6 mph9 km/h
Dew Point 41°F5°C
uv Index 5
Barometric Pressure 30.27 in1025 mb
POP 1% *
Humidity 37%
Tue, 6th
Illiopolis IL Weather - Tuesday, Oct 6, 2026 - Sunny
Hi: 77°F 25°C
Lo: 51°F 10°C
Sunrise 06:58 AM
Sunset 06:30 PM
Wind S 10 mph15 km/h
Dew Point 43°F6°C
uv Index 4
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 35%
Wed, 7th
Illiopolis IL Weather - Wednesday, Oct 7, 2026 - Sunny
Hi: 84°F 29°C
Lo: 57°F 14°C
Sunrise 06:59 AM
Sunset 06:29 PM
Wind WSW 12 mph19 km/h
Dew Point 50°F10°C
uv Index 4
Barometric Pressure 29.91 in1013 mb
POP 1% *
Humidity 36%
Thu, 8th
Illiopolis IL Weather - Thursday, Oct 8, 2026 - Overcast
Hi: 74°F 24°C
Lo: 55°F 13°C
Sunrise 07:00 AM
Sunset 06:27 PM
Wind NNE 10 mph16 km/h
Dew Point 33°F1°C
uv Index 4
Barometric Pressure 30.15 in1021 mb
POP 8% *
Humidity 24%
Fri, 9th
Illiopolis IL Weather - Friday, Oct 9, 2026 - Overcast
Hi: 73°F 23°C
Lo: 54°F 12°C
Sunrise 07:01 AM
Sunset 06:25 PM
Wind SSE 7 mph11 km/h
Dew Point 36°F2°C
uv Index 5
Barometric Pressure 30.18 in1022 mb
POP 9% *
Humidity 29%
Sat, 10th
Illiopolis IL Weather - Saturday, Oct 10, 2026 - Sunny
Hi: 81°F 27°C
Lo: 53°F 12°C
Sunrise 07:02 AM
Sunset 06:24 PM
Wind SE 11 mph18 km/h
Dew Point 40°F5°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 1% *
Humidity 31%
Sun, 11th
Illiopolis IL Weather - Sunday, Oct 11, 2026 - Overcast
Hi: 82°F 28°C
Lo: 61°F 16°C
Sunrise 07:03 AM
Sunset 06:22 PM
Wind S 7 mph12 km/h
Dew Point 55°F13°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 11% *
Humidity 46%
Mon, 12th
Illiopolis IL Weather - Monday, Oct 12, 2026 - Overcast
Hi: 80°F 27°C
Lo: 61°F 16°C
Sunrise 07:04 AM
Sunset 06:21 PM
Wind WSW 3 mph5 km/h
Dew Point 58°F14°C
uv Index 5
Barometric Pressure 29.85 in1011 mb
POP 5% *
Humidity 54%
Tue, 13th
Illiopolis IL Weather - Tuesday, Oct 13, 2026 - Sunny
Hi: 84°F 29°C
Lo: 61°F 16°C
Sunrise 07:05 AM
Sunset 06:19 PM
Wind SSW 11 mph18 km/h
Dew Point 58°F14°C
uv Index 7
Barometric Pressure 29.83 in1010 mb
POP 3% *
Humidity 49%
Wed, 14th
Illiopolis IL Weather - Wednesday, Oct 14, 2026 - Moderate Rain
Hi: 65°F 18°C
Lo: 48°F 9°C
Sunrise 07:06 AM
Sunset 06:18 PM
Wind SSW 13 mph20 km/h
Dew Point 58°F14°C
uv Index 4
Barometric Pressure 29.77 in1008 mb
POP 73% *
Humidity 87%
Thu, 15th
Illiopolis IL Weather - Thursday, Oct 15, 2026 - Overcast
Hi: 51°F 10°C
Lo: 42°F 6°C
Sunrise 07:07 AM
Sunset 06:16 PM
Wind WNW 17 mph27 km/h
Dew Point 32°F0°C
uv Index 2
Barometric Pressure 30.06 in1018 mb
POP 14% *
Humidity 60%
Fri, 16th
Illiopolis IL Weather - Friday, Oct 16, 2026 - Sunny
Hi: 69°F 21°C
Lo: 41°F 5°C
Sunrise 07:08 AM
Sunset 06:15 PM
Wind SW 10 mph16 km/h
Dew Point 38°F3°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 41%
Sat, 17th
Illiopolis IL Weather - Saturday, Oct 17, 2026 - Sunny
Hi: 57°F 14°C
Lo: 46°F 8°C
Sunrise 07:09 AM
Sunset 06:14 PM
Wind NNW 11 mph18 km/h
Dew Point 41°F5°C
uv Index 4
Barometric Pressure 30.12 in1020 mb
POP 6% *
Humidity 58%
Sun, 18th
Illiopolis IL Weather - Sunday, Oct 18, 2026 - Patchy Rain Nearby
Hi: 53°F 12°C
Lo: 44°F 7°C
Sunrise 07:10 AM
Sunset 06:12 PM
Wind NW 11 mph18 km/h
Dew Point 35°F2°C
uv Index 3
Barometric Pressure 30.21 in1023 mb
POP 13% *
Humidity 54%
* POP = Probability of Precipitation. Data for 12:00 PM.