Chester, IL 14 Day Weather - 62233 WeatherWorld.com

Feedback E-mail the Weather

Quick Weather Clicks

Chester, IL Weather - 14-Day Weather Forecast

Current Conditions

Settings
Chester IL Weather - Clear - 84°F
Clear
84°F
Updated 7:25 pm
Feels Like 88°F
Humidity 63%
Wind E 6 mph
Barometer  29.88 in
Dew Point 70°F
Chester IL Weather - Clear - 29°C
Clear
29°C
Updated 7:25 pm
Feels Like 31°C
Humidity 63%
Wind E 10 km/h
Barometer  101.2 kPa
Dew Point 21°C
Chester, IL Weather and Current Conditionschester il weather forecast

Chester, IL Weather Forecast

Chester Illinois WeatherChester, Illinois Weather Weather Forecast
14 day API weather forecast for Chester, Illinois. Note: The 7-day weather forecast for Chester, IL is the most reliable and accurate weather forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days ahead.
Chester, IL Weather Forecast Dated: 725 PM Sat Sep 12 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.

Saturday, September 12, 2026

Mid-Morning
Chester Weather - 2026-09-12 - Morning - Sunny
74°F 24°C
Sunny
Mid-Afternoon
Chester Weather - 2026-09-12 - Afternoon - Sunny
95°F 35°C
Sunny
Early-Evening
Chester Weather - 2026-09-12 - Evening - Sunny
86°F 30°C
Sunny
Sizzling hot near 95°F 35°C with a heat index reaching 101°F 38°C, sunny throughout the day, with lower humidity and steady pressure.

Sunday, September 13, 2026

Mid-Morning
Chester Weather - 2026-09-13 - Morning - Partly Cloudy
77°F 25°C
Partly Cloudy
Mid-Afternoon
Chester Weather - 2026-09-13 - Afternoon - Cloudy
93°F 34°C
Cloudy
Early-Evening
Chester Weather - 2026-09-13 - Evening - Nearby Thunderstorms
81°F 27°C
Nearby Thunderstorms
Hot and sweltering around 93°F 34°C (heat index 96°F 36°C), locally heavy thunderstorms at times, with steady humidity and steady pressure. Winds turning from the WNW to the NNW at 4 mph 7 km/h.

Monday, September 14, 2026

Mid-Morning
Chester Weather - 2026-09-14 - Morning - Sunny
71°F 22°C
Sunny
Mid-Afternoon
Chester Weather - 2026-09-14 - Afternoon - Overcast
91°F 33°C
Overcast
Early-Evening
Chester Weather - 2026-09-14 - Evening - Sunny
87°F 31°C
Sunny
Sizzling hot with 91°F 33°C, sunny in the morning, overcast in the afternoon, and sunny this evening, with lower humidity and barometric pressure falling. Winds switching from the E to the ESE at 6 mph 10 km/h.

Tuesday, September 15, 2026

Mid-Morning
Chester Weather - 2026-09-15 - Morning - Sunny
84°F 29°C
Sunny
Mid-Afternoon
Chester Weather - 2026-09-15 - Afternoon - Sunny
102°F 39°C
Sunny
Early-Evening
Chester Weather - 2026-09-15 - Evening - Partly Cloudy
93°F 34°C
Partly Cloudy
Dangerously hot with a high of 102°F 39°C, sunny throughout the day, with lower humidity and steady pressure. Winds moving from the SSW to the NNE at 10 mph 16 km/h.

Wednesday, September 16, 2026

Mid-Morning
Chester Weather - 2026-09-16 - Morning - Sunny
85°F 29°C
Sunny
Mid-Afternoon
Chester Weather - 2026-09-16 - Afternoon - Cloudy
99°F 37°C
Cloudy
Early-Evening
Chester Weather - 2026-09-16 - Evening - Sunny
89°F 32°C
Sunny
Very hot with a high of 99°F 37°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds swinging from the SW to the ENE at 8 mph 12 km/h.

Thursday, September 17, 2026

Mid-Morning
Chester Weather - 2026-09-17 - Morning - Partly Cloudy
82°F 28°C
Partly Cloudy
Mid-Afternoon
Chester Weather - 2026-09-17 - Afternoon - Partly Cloudy
95°F 35°C
Partly Cloudy
Early-Evening
Chester Weather - 2026-09-17 - Evening - Sunny
87°F 31°C
Sunny
Very hot with a high of 95°F 35°C, feeling closer to 99°F 37°C in the humidity, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds shifting from the NW to the NNW at 6 mph 9 km/h.

Friday, September 18, 2026

Mid-Morning
Chester Weather - 2026-09-18 - Morning - Fog
75°F 24°C
Fog
Mid-Afternoon
Chester Weather - 2026-09-18 - Afternoon - Sunny
91°F 33°C
Sunny
Early-Evening
Chester Weather - 2026-09-18 - Evening - Sunny
86°F 30°C
Sunny
Sizzling hot near 91°F 33°C with a heat index reaching 96°F 35°C, cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling.

Saturday, September 19, 2026

Mid-Morning
Chester Weather - 2026-09-19 - Morning - Overcast
78°F 25°C
Overcast
Mid-Afternoon
Chester Weather - 2026-09-19 - Afternoon - Sunny
95°F 35°C
Sunny
Early-Evening
Chester Weather - 2026-09-19 - Evening - Nearby Thunderstorms
81°F 27°C
Nearby Thunderstorms
Hot and sweltering around 95°F 35°C (heat index 98°F 36°C), locally heavy thunderstorms at times, with steady humidity and barometric pressure falling.

Sunday, September 20, 2026

Mid-Morning
Chester Weather - 2026-09-20 - Morning - Light Fog
73°F 23°C
Light Fog
Mid-Afternoon
Chester Weather - 2026-09-20 - Afternoon - Light Showers
73°F 23°C
Light Showers
Early-Evening
Chester Weather - 2026-09-20 - Evening - Light Showers
68°F 20°C
Light Showers
Mild temperatures up to 73°F 23°C, dry early, with showers continuing through afternoon and evening, with steady humidity and steady pressure. Winds turning from the NW to the SE at 9 mph 13 km/h.

Monday, September 21, 2026

Mid-Morning
Chester Weather - 2026-09-21 - Morning - Light Showers
66°F 19°C
Light Showers
Mid-Afternoon
Chester Weather - 2026-09-21 - Afternoon - Light Showers
65°F 18°C
Light Showers
Early-Evening
Chester Weather - 2026-09-21 - Evening - Light Showers
65°F 18°C
Light Showers
Mildly cool near 65°F 18°C, rounds of showers expected off and on all day, with steady humidity and steady pressure. Winds switching from the ENE to the NNE at 6 mph 10 km/h.

Tuesday, September 22, 2026

Mid-Morning
Chester Weather - 2026-09-22 - Morning - Light Showers
63°F 17°C
Light Showers
Mid-Afternoon
Chester Weather - 2026-09-22 - Afternoon - Scattered Showers
64°F 18°C
Scattered Showers
Early-Evening
Chester Weather - 2026-09-22 - Evening - Scattered Showers
63°F 17°C
Scattered Showers
Comfortable at 64°F 18°C, scattered downpours possible, with steady humidity and steady pressure. Winds blowing from the NNW at 8 mph 13 km/h.

Wednesday, September 23, 2026

Mid-Morning
Chester Weather - 2026-09-23 - Morning - Sunny
73°F 23°C
Sunny
Mid-Afternoon
Chester Weather - 2026-09-23 - Afternoon - Sunny
92°F 34°C
Sunny
Early-Evening
Chester Weather - 2026-09-23 - Evening - Sunny
81°F 27°C
Sunny
Hot and sweltering around 92°F 34°C, sunny throughout the day, with steady humidity and steady pressure. Winds swinging from the SSW to the SE at 10 mph 16 km/h. Gusts up to 21 mph 33 km/h.

Thursday, September 24, 2026

Mid-Morning
Chester Weather - 2026-09-24 - Morning - Sunny
63°F 17°C
Sunny
Mid-Afternoon
Chester Weather - 2026-09-24 - Afternoon - Sunny
80°F 27°C
Sunny
Early-Evening
Chester Weather - 2026-09-24 - Evening - Sunny
72°F 22°C
Sunny
Quite warm around 80°F 27°C, sunny throughout the day, with lower humidity and steady pressure. Winds shifting from the NE to the ESE at 6 mph 9 km/h.

Friday, September 25, 2026

Mid-Morning
Chester Weather - 2026-09-25 - Morning - Cloudy
73°F 23°C
Cloudy
Mid-Afternoon
Chester Weather - 2026-09-25 - Afternoon - Cloudy
95°F 35°C
Cloudy
Early-Evening
Chester Weather - 2026-09-25 - Evening - Sunny
87°F 31°C
Sunny
Hot temperatures near 95°F 35°C, cloudy in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and barometric pressure falling. Winds turning from the S to the SSW at 10 mph 16 km/h. Gusts up to 21 mph 33 km/h.

Trending Headlines

Chester, IL Weather Radar Map

Use the map search tool if you want to place a location marker on the radar map...

Chester, IL 7 Day Weather

National Two Day Weather Forecast


E-mail the Chester Weather Forecast

Voice your opinion or tell us about page issues...

Weather by the Numbers

Sat, 12th
Chester IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 95°F 35°C
Lo: 68°F 20°C
Sunrise 06:39 AM
Sunset 07:12 PM
Wind WSW 5 mph9 km/h
Dew Point 73°F23°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 2% *
Humidity 54%
Sun, 13th
Chester IL Weather - Sunday, Sep 13, 2026 - Partly Cloudy
Hi: 94°F 35°C
Lo: 72°F 22°C
Sunrise 06:39 AM
Sunset 07:10 PM
Wind W 3 mph5 km/h
Dew Point 65°F19°C
uv Index 7
Barometric Pressure 29.97 in1015 mb
POP 4% *
Humidity 45%
Mon, 14th
Chester IL Weather - Monday, Sep 14, 2026 - Light Rain Shower
Hi: 92°F 33°C
Lo: 65°F 18°C
Sunrise 06:40 AM
Sunset 07:09 PM
Wind NE 5 mph9 km/h
Dew Point 64°F18°C
uv Index 6
Barometric Pressure 30.12 in1020 mb
POP 36% *
Humidity 55%
Tue, 15th
Chester IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 102°F 39°C
Lo: 73°F 23°C
Sunrise 06:41 AM
Sunset 07:07 PM
Wind SW 14 mph22 km/h
Dew Point 61°F16°C
uv Index 7
Barometric Pressure 30.03 in1017 mb
POP 0% *
Humidity 28%
Wed, 16th
Chester IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 102°F 39°C
Lo: 77°F 25°C
Sunrise 06:42 AM
Sunset 07:06 PM
Wind W 6 mph10 km/h
Dew Point 62°F17°C
uv Index 7
Barometric Pressure 30.12 in1020 mb
POP 1% *
Humidity 29%
Thu, 17th
Chester IL Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 96°F 35°C
Lo: 77°F 25°C
Sunrise 06:43 AM
Sunset 07:04 PM
Wind NNW 8 mph12 km/h
Dew Point 65°F18°C
uv Index 8
Barometric Pressure 30.12 in1020 mb
POP 2% *
Humidity 43%
Fri, 18th
Chester IL Weather - Friday, Sep 18, 2026 - Partly Cloudy
Hi: 92°F 34°C
Lo: 70°F 21°C
Sunrise 06:44 AM
Sunset 07:02 PM
Wind NE 6 mph10 km/h
Dew Point 68°F20°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 5% *
Humidity 59%
Sat, 19th
Chester IL Weather - Saturday, Sep 19, 2026 - Overcast
Hi: 95°F 35°C
Lo: 73°F 23°C
Sunrise 06:45 AM
Sunset 07:01 PM
Wind SW 7 mph12 km/h
Dew Point 65°F19°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 3% *
Humidity 47%
Sun, 20th
Chester IL Weather - Sunday, Sep 20, 2026 - Patchy Rain Nearby
Hi: 75°F 24°C
Lo: 66°F 19°C
Sunrise 06:45 AM
Sunset 06:59 PM
Wind N 7 mph11 km/h
Dew Point 69°F21°C
uv Index 5
Barometric Pressure 29.88 in1012 mb
POP 41% *
Humidity 83%
Mon, 21st
Chester IL Weather - Monday, Sep 21, 2026 - Light Rain Shower
Hi: 66°F 19°C
Lo: 65°F 18°C
Sunrise 06:46 AM
Sunset 06:58 PM
Wind ENE 9 mph14 km/h
Dew Point 65°F18°C
uv Index 4
Barometric Pressure 29.85 in1011 mb
POP 82% *
Humidity 98%
Tue, 22nd
Chester IL Weather - Tuesday, Sep 22, 2026 - Light Rain Shower
Hi: 65°F 18°C
Lo: 62°F 16°C
Sunrise 06:47 AM
Sunset 06:56 PM
Wind NNW 9 mph14 km/h
Dew Point 62°F17°C
uv Index 4
Barometric Pressure 29.83 in1010 mb
POP 42% *
Humidity 93%
Wed, 23rd
Chester IL Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 93°F 34°C
Lo: 62°F 17°C
Sunrise 06:48 AM
Sunset 06:55 PM
Wind SW 9 mph15 km/h
Dew Point 49°F9°C
uv Index 8
Barometric Pressure 29.91 in1013 mb
POP 1% *
Humidity 28%
Thu, 24th
Chester IL Weather - Thursday, Sep 24, 2026 - Sunny
Hi: 81°F 27°C
Lo: 55°F 13°C
Sunrise 06:49 AM
Sunset 06:53 PM
Wind NE 7 mph12 km/h
Dew Point 34°F1°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 0% *
Humidity 24%
Fri, 25th
Chester IL Weather - Friday, Sep 25, 2026 - Partly Cloudy
Hi: 96°F 36°C
Lo: 62°F 17°C
Sunrise 06:50 AM
Sunset 06:51 PM
Wind SSW 13 mph22 km/h
Dew Point 50°F10°C
uv Index 8
Barometric Pressure 30 in1016 mb
POP 5% *
Humidity 28%
* POP = Probability of Precipitation. Data for 12:00 PM.