Tri-County, IL 14 Day Weather

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Tri-County, IL Weather - 14-Day Weather Forecast

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Tri-County IL Weather - Clear - 63°F
Clear
63°F
Updated 5:53 am
Feels Like 60°F
Humidity 90%
Wind ESE 3 mph
Barometer  30.1 in
Dew Point 60°F
Tri-County IL Weather - Clear - 17°C
Clear
17°C
Updated 5:53 am
Feels Like 16°C
Humidity 90%
Wind ESE 5 km/h
Barometer  101.9 kPa
Dew Point 16°C
Tri-County, IL Weather and Current Conditionstri-county il weather forecast

Tri-County, IL Weather Forecast

Tri-County Illinois WeatherTri-County, Illinois Weather Weather Forecast
Here is the API 14 day weather forecast for Tri-County. Note: The 7-day Tri-County weather forecast 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.
Tri-County, IL Weather Forecast Dated: 553 AM Tue Sep 08 2026
Expect a mild stretch 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
Tri-County Weather - 2026-09-08 - Morning - Overcast
72°F 22°C
Overcast
Mid-Afternoon
Tri-County Weather - 2026-09-08 - Afternoon - Overcast
88°F 31°C
Overcast
Early-Evening
Tri-County Weather - 2026-09-08 - Evening - Overcast
82°F 28°C
Overcast
Warm and summery near 88°F 31°C, overcast throughout the day, with steady humidity and barometric pressure falling. Winds out of the SSE at 11 mph 17 km/h. Gusts up to 28 mph 44 km/h.

Wednesday, September 9, 2026

Mid-Morning
Tri-County Weather - 2026-09-09 - Morning - Light Showers
70°F 21°C
Light Showers
Mid-Afternoon
Tri-County Weather - 2026-09-09 - Afternoon - Overcast
82°F 28°C
Overcast
Early-Evening
Tri-County Weather - 2026-09-09 - Evening - Overcast
77°F 25°C
Overcast
Balmy with temperatures reaching 82°F 28°C, scattered morning showers before drying out later, with steady humidity and steady pressure. Winds switching from the W to the SSE at 3 mph 5 km/h.

Thursday, September 10, 2026

Mid-Morning
Tri-County Weather - 2026-09-10 - Morning - Overcast
67°F 19°C
Overcast
Mid-Afternoon
Tri-County Weather - 2026-09-10 - Afternoon - Sunny
79°F 26°C
Sunny
Early-Evening
Tri-County Weather - 2026-09-10 - Evening - Sunny
71°F 22°C
Sunny
Enjoyable around 79°F 26°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds moving from the NE to the ENE at 8 mph 12 km/h.

Friday, September 11, 2026

Mid-Morning
Tri-County Weather - 2026-09-11 - Morning - Overcast
68°F 20°C
Overcast
Mid-Afternoon
Tri-County Weather - 2026-09-11 - Afternoon - Partly Cloudy
90°F 32°C
Partly Cloudy
Early-Evening
Tri-County Weather - 2026-09-11 - Evening - Sunny
81°F 28°C
Sunny
Hot temperatures near 90°F 32°C, overcast in the morning, partly cloudy in the afternoon, and sunny this 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
Tri-County Weather - 2026-09-12 - Morning - Scattered Showers
68°F 20°C
Scattered Showers
Mid-Afternoon
Tri-County Weather - 2026-09-12 - Afternoon - Sunny
84°F 29°C
Sunny
Early-Evening
Tri-County Weather - 2026-09-12 - Evening - Sunny
81°F 27°C
Sunny
Quite warm reaching 84°F 29°C, feeling like 87°F 31°C during peak afternoon, scattered downpours possible, with lower humidity and steady pressure. Winds shifting from the N to the E at 8 mph 13 km/h.

Sunday, September 13, 2026

Mid-Morning
Tri-County Weather - 2026-09-13 - Morning - Overcast
76°F 25°C
Overcast
Mid-Afternoon
Tri-County Weather - 2026-09-13 - Afternoon - Sunny
94°F 35°C
Sunny
Early-Evening
Tri-County Weather - 2026-09-13 - Evening - Sunny
91°F 33°C
Sunny
Very hot with a high of 94°F 35°C, feeling closer to 101°F 39°C in the humidity, overcast in the morning, sunny in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling. Winds turning from the SSE to the S at 13 mph 21 km/h. Gusts up to 30 mph 49 km/h.

Monday, September 14, 2026

Mid-Morning
Tri-County Weather - 2026-09-14 - Morning - Sunny
82°F 28°C
Sunny
Mid-Afternoon
Tri-County Weather - 2026-09-14 - Afternoon - Partly Cloudy
89°F 32°C
Partly Cloudy
Early-Evening
Tri-County Weather - 2026-09-14 - Evening - Overcast
76°F 25°C
Overcast
Warm and summery around 89°F 32°C (feels like 93°F 34°C), partly cloudy in the morning, cloudy in the afternoon, and overcast this evening, with increasing humidity and steady pressure. Winds switching from the SSW to the NW at 15 mph 24 km/h. Gusts up to 26 mph 42 km/h.

Tuesday, September 15, 2026

Mid-Morning
Tri-County Weather - 2026-09-15 - Morning - Sunny
51°F 11°C
Sunny
Mid-Afternoon
Tri-County Weather - 2026-09-15 - Afternoon - Overcast
62°F 17°C
Overcast
Early-Evening
Tri-County Weather - 2026-09-15 - Evening - Sunny
58°F 15°C
Sunny
Cool with a high near 62°F 17°C, partly cloudy through the afternoon, turning sunny this evening, with lower humidity and steady pressure. Winds moving from the NW to the ESE at 10 mph 16 km/h. Gusts up to 20 mph 32 km/h.

Wednesday, September 16, 2026

Mid-Morning
Tri-County Weather - 2026-09-16 - Morning - Sunny
53°F 12°C
Sunny
Mid-Afternoon
Tri-County Weather - 2026-09-16 - Afternoon - Overcast
66°F 19°C
Overcast
Early-Evening
Tri-County Weather - 2026-09-16 - Evening - Overcast
61°F 16°C
Overcast
Refreshing around 66°F 19°C, sunny in the morning, becoming overcast through the afternoon and evening, with lower humidity and steady pressure.

Thursday, September 17, 2026

Mid-Morning
Tri-County Weather - 2026-09-17 - Morning - Overcast
58°F 14°C
Overcast
Mid-Afternoon
Tri-County Weather - 2026-09-17 - Afternoon - Sunny
69°F 20°C
Sunny
Early-Evening
Tri-County Weather - 2026-09-17 - Evening - Sunny
66°F 19°C
Sunny
Mild with a high of 69°F 20°C, overcast in the morning, sunny in the afternoon, and overcast this evening, with lower humidity and barometric pressure falling. Winds swinging from the SSE to the SE at 8 mph 12 km/h.

Friday, September 18, 2026

Mid-Morning
Tri-County Weather - 2026-09-18 - Morning - Overcast
64°F 18°C
Overcast
Mid-Afternoon
Tri-County Weather - 2026-09-18 - Afternoon - Light Showers
63°F 17°C
Light Showers
Early-Evening
Tri-County Weather - 2026-09-18 - Evening - Light Showers
61°F 16°C
Light Showers
Comfortable at 63°F 17°C, clouds and showers taking over for the afternoon and evening, with increasing humidity and barometric pressure falling. Winds shifting from the S to the WSW at 10 mph 17 km/h.

Saturday, September 19, 2026

Mid-Morning
Tri-County Weather - 2026-09-19 - Morning - Overcast
50°F 10°C
Overcast
Mid-Afternoon
Tri-County Weather - 2026-09-19 - Afternoon - Overcast
57°F 14°C
Overcast
Early-Evening
Tri-County Weather - 2026-09-19 - Evening - Overcast
53°F 12°C
Overcast
Crisp with a high near 57°F 14°C, overcast throughout the day, with lower humidity and steady pressure. Winds tapering down from SE 17 mph 27 km/h to NE 9 mph 15 km/h.

Sunday, September 20, 2026

Mid-Morning
Tri-County Weather - 2026-09-20 - Morning - Sunny
51°F 10°C
Sunny
Mid-Afternoon
Tri-County Weather - 2026-09-20 - Afternoon - Sunny
63°F 17°C
Sunny
Early-Evening
Tri-County Weather - 2026-09-20 - Evening - Sunny
57°F 14°C
Sunny
Refreshing around 63°F 17°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds switching from the E to the ENE at 6 mph 9 km/h.

Monday, September 21, 2026

Mid-Morning
Tri-County Weather - 2026-09-21 - Morning - Sunny
55°F 13°C
Sunny
Mid-Afternoon
Tri-County Weather - 2026-09-21 - Afternoon - Sunny
69°F 21°C
Sunny
Early-Evening
Tri-County Weather - 2026-09-21 - Evening - Sunny
63°F 18°C
Sunny
Mild temperatures up to 69°F 21°C, sunny throughout the day, with lower humidity and steady pressure.

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Weather by the Numbers

Tue, 8th
Tri-County IL Weather - Tuesday, Sep 8, 2026 - Partly Cloudy
Hi: 89°F 31°C
Lo: 61°F 16°C
Sunrise 06:34 AM
Sunset 07:21 PM
Wind S 9 mph14 km/h
Dew Point 57°F14°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 4% *
Humidity 44%
Wed, 9th
Tri-County IL Weather - Wednesday, Sep 9, 2026 - Light Rain Shower
Hi: 82°F 28°C
Lo: 69°F 21°C
Sunrise 06:35 AM
Sunset 07:20 PM
Wind SSW 5 mph8 km/h
Dew Point 67°F19°C
uv Index 6
Barometric Pressure 30.03 in1017 mb
POP 37% *
Humidity 82%
Thu, 10th
Tri-County IL Weather - Thursday, Sep 10, 2026 - Partly Cloudy
Hi: 79°F 26°C
Lo: 64°F 18°C
Sunrise 06:36 AM
Sunset 07:18 PM
Wind NE 9 mph14 km/h
Dew Point 57°F14°C
uv Index 6
Barometric Pressure 30 in1016 mb
POP 4% *
Humidity 55%
Fri, 11th
Tri-County IL Weather - Friday, Sep 11, 2026 - Overcast
Hi: 91°F 33°C
Lo: 61°F 16°C
Sunrise 06:37 AM
Sunset 07:16 PM
Wind SSW 11 mph17 km/h
Dew Point 68°F20°C
uv Index 6
Barometric Pressure 29.88 in1012 mb
POP 15% *
Humidity 65%
Sat, 12th
Tri-County IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 86°F 30°C
Lo: 66°F 19°C
Sunrise 06:38 AM
Sunset 07:15 PM
Wind ENE 4 mph7 km/h
Dew Point 65°F18°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 4% *
Humidity 63%
Sun, 13th
Tri-County IL Weather - Sunday, Sep 13, 2026 - Moderate Or Heavy Rain Shower
Hi: 96°F 36°C
Lo: 76°F 24°C
Sunrise 06:39 AM
Sunset 07:13 PM
Wind SSE 15 mph24 km/h
Dew Point 70°F21°C
uv Index 7
Barometric Pressure 29.85 in1011 mb
POP 36% *
Humidity 62%
Mon, 14th
Tri-County IL Weather - Monday, Sep 14, 2026 - Cloudy
Hi: 89°F 32°C
Lo: 64°F 18°C
Sunrise 06:40 AM
Sunset 07:11 PM
Wind SW 11 mph18 km/h
Dew Point 67°F20°C
uv Index 7
Barometric Pressure 29.85 in1011 mb
POP 5% *
Humidity 52%
Tue, 15th
Tri-County IL Weather - Tuesday, Sep 15, 2026 - Partly Cloudy
Hi: 63°F 17°C
Lo: 47°F 8°C
Sunrise 06:41 AM
Sunset 07:10 PM
Wind NW 15 mph24 km/h
Dew Point 41°F5°C
uv Index 4
Barometric Pressure 30.18 in1022 mb
POP 10% *
Humidity 53%
Wed, 16th
Tri-County IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 67°F 19°C
Lo: 46°F 8°C
Sunrise 06:42 AM
Sunset 07:08 PM
Wind NNW 8 mph13 km/h
Dew Point 40°F5°C
uv Index 5
Barometric Pressure 30.36 in1028 mb
POP 6% *
Humidity 45%
Thu, 17th
Tri-County IL Weather - Thursday, Sep 17, 2026 - Overcast
Hi: 70°F 21°C
Lo: 52°F 11°C
Sunrise 06:43 AM
Sunset 07:06 PM
Wind SSE 7 mph11 km/h
Dew Point 45°F7°C
uv Index 4
Barometric Pressure 30.39 in1029 mb
POP 4% *
Humidity 48%
Fri, 18th
Tri-County IL Weather - Friday, Sep 18, 2026 - Overcast
Hi: 69°F 21°C
Lo: 60°F 16°C
Sunrise 06:44 AM
Sunset 07:04 PM
Wind SW 6 mph9 km/h
Dew Point 51°F10°C
uv Index 4
Barometric Pressure 30.12 in1020 mb
POP 24% *
Humidity 54%
Sat, 19th
Tri-County IL Weather - Saturday, Sep 19, 2026 - Overcast
Hi: 59°F 15°C
Lo: 48°F 9°C
Sunrise 06:45 AM
Sunset 07:03 PM
Wind NNE 15 mph24 km/h
Dew Point 40°F5°C
uv Index 3
Barometric Pressure 30.3 in1026 mb
POP 13% *
Humidity 56%
Sun, 20th
Tri-County IL Weather - Sunday, Sep 20, 2026 - Sunny
Hi: 63°F 17°C
Lo: 43°F 6°C
Sunrise 06:46 AM
Sunset 07:01 PM
Wind E 8 mph12 km/h
Dew Point 39°F4°C
uv Index 4
Barometric Pressure 30.27 in1025 mb
POP 2% *
Humidity 48%
Mon, 21st
Tri-County IL Weather - Monday, Sep 21, 2026 - Sunny
Hi: 70°F 21°C
Lo: 48°F 9°C
Sunrise 06:47 AM
Sunset 06:59 PM
Wind SSE 6 mph9 km/h
Dew Point 44°F6°C
uv Index 5
Barometric Pressure 30.24 in1024 mb
POP 1% *
Humidity 47%
* POP = Probability of Precipitation. Data for 12:00 PM.