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Marion IL Weather - Mostly Clear - 89°F
Mostly Clear
89°F
Updated 7:15 pm
Feels Like 89°F
Humidity 55%
Wind SSE 7 mph
Barometer  30.08 in
Dew Point 71°F
Marion IL Weather - Mostly Clear - 32°C
Mostly Clear
32°C
Updated 7:15 pm
Feels Like 32°C
Humidity 55%
Wind SSE 11 km/h
Barometer  101.8 kPa
Dew Point 22°C
Marion, IL Weather and Current Conditionsmarion il weather forecast

Marion, IL Weather Forecast

Marion Illinois WeatherMarion, Illinois Weather Weather Forecast
14 day API weather forecast for Marion, Illinois. Note: The 7-day weather forecast for Marion, 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.
Marion, IL Weather Forecast Dated: 715 PM Tue Sep 15 2026
Expect a hot stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Tuesday, September 15, 2026

Mid-Morning
Marion Weather - 2026-09-15 - Morning - Sunny
84°F 29°C
Sunny
Mid-Afternoon
Marion Weather - 2026-09-15 - Afternoon - Partly Cloudy
101°F 38°C
Partly Cloudy
Early-Evening
Marion Weather - 2026-09-15 - Evening - Overcast
92°F 33°C
Overcast
Scorching hot near 101°F 38°C, sunny in the morning, cloudy in the afternoon, and partly cloudy this evening, with lower humidity and steady pressure. Winds turning from the SSW to the S at 10 mph 15 km/h.

Wednesday, September 16, 2026

Mid-Morning
Marion Weather - 2026-09-16 - Morning - Sunny
85°F 29°C
Sunny
Mid-Afternoon
Marion Weather - 2026-09-16 - Afternoon - Overcast
101°F 38°C
Overcast
Early-Evening
Marion Weather - 2026-09-16 - Evening - Overcast
93°F 34°C
Overcast
Sweltering heat reaching 101°F 38°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds switching from the SW to the SSE at 3 mph 5 km/h.

Thursday, September 17, 2026

Mid-Morning
Marion Weather - 2026-09-17 - Morning - Sunny
87°F 31°C
Sunny
Mid-Afternoon
Marion Weather - 2026-09-17 - Afternoon - Overcast
101°F 38°C
Overcast
Early-Evening
Marion Weather - 2026-09-17 - Evening - Partly Cloudy
94°F 34°C
Partly Cloudy
Dangerously hot temperatures around 101°F 38°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds decreasing from SW 11 mph 17 km/h to SSW 3 mph 5 km/h.

Friday, September 18, 2026

Mid-Morning
Marion Weather - 2026-09-18 - Morning - Sunny
80°F 27°C
Sunny
Mid-Afternoon
Marion Weather - 2026-09-18 - Afternoon - Cloudy
102°F 39°C
Cloudy
Early-Evening
Marion Weather - 2026-09-18 - Evening - Scattered Showers
86°F 30°C
Scattered Showers
Dangerously hot with a high of 102°F 39°C, periods of heavy rain and gusty conditions, with steady humidity and barometric pressure falling.

Saturday, September 19, 2026

Mid-Morning
Marion Weather - 2026-09-19 - Morning - Overcast
87°F 31°C
Overcast
Mid-Afternoon
Marion Weather - 2026-09-19 - Afternoon - Overcast
101°F 38°C
Overcast
Early-Evening
Marion Weather - 2026-09-19 - Evening - Cloudy
93°F 34°C
Cloudy
Scorching hot near 101°F 38°C, overcast throughout the day, with lower humidity and steady pressure. Winds swinging from the WSW to the SW at 8 mph 12 km/h.

Sunday, September 20, 2026

Mid-Morning
Marion Weather - 2026-09-20 - Morning - Sunny
88°F 31°C
Sunny
Mid-Afternoon
Marion Weather - 2026-09-20 - Afternoon - Sunny
102°F 39°C
Sunny
Early-Evening
Marion Weather - 2026-09-20 - Evening - Cloudy
93°F 34°C
Cloudy
Sweltering heat reaching 102°F 39°C, sunny in the morning, partly cloudy in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds shifting from the WSW to the SSW at 9 mph 15 km/h.

Monday, September 21, 2026

Mid-Morning
Marion Weather - 2026-09-21 - Morning - Cloudy
85°F 29°C
Cloudy
Mid-Afternoon
Marion Weather - 2026-09-21 - Afternoon - Partly Cloudy
97°F 36°C
Partly Cloudy
Early-Evening
Marion Weather - 2026-09-21 - Evening - Cloudy
86°F 30°C
Cloudy
Hot and sweltering around 97°F 36°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds turning from the WSW to the SSE at 8 mph 12 km/h.

Tuesday, September 22, 2026

Mid-Morning
Marion Weather - 2026-09-22 - Morning - Light Fog
73°F 23°C
Light Fog
Mid-Afternoon
Marion Weather - 2026-09-22 - Afternoon - Overcast
92°F 33°C
Overcast
Early-Evening
Marion Weather - 2026-09-22 - Evening - Overcast
83°F 29°C
Overcast
Sizzling hot with 92°F 33°C, overcast throughout the day, with lower humidity and steady pressure. Winds switching from the NE to the ESE at 8 mph 13 km/h.

Wednesday, September 23, 2026

Mid-Morning
Marion Weather - 2026-09-23 - Morning - Overcast
74°F 23°C
Overcast
Mid-Afternoon
Marion Weather - 2026-09-23 - Afternoon - Overcast
84°F 29°C
Overcast
Early-Evening
Marion Weather - 2026-09-23 - Evening - Sunny
79°F 26°C
Sunny
Very warm near 84°F 29°C, though humidity makes it feel like 88°F 31°C, overcast in the morning, partly cloudy in the afternoon, and cloudy this evening, with steady humidity and steady pressure.

Thursday, September 24, 2026

Mid-Morning
Marion Weather - 2026-09-24 - Morning - Light Showers
74°F 23°C
Light Showers
Mid-Afternoon
Marion Weather - 2026-09-24 - Afternoon - Overcast
82°F 28°C
Overcast
Early-Evening
Marion Weather - 2026-09-24 - Evening - Scattered Showers
72°F 22°C
Scattered Showers
Warm and summery around 82°F 28°C (feels like 85°F 29°C), periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds moving from the SSW to the WNW at 10 mph 15 km/h.

Friday, September 25, 2026

Mid-Morning
Marion Weather - 2026-09-25 - Morning - Scattered Showers
63°F 17°C
Scattered Showers
Mid-Afternoon
Marion Weather - 2026-09-25 - Afternoon - Light Showers
75°F 24°C
Light Showers
Early-Evening
Marion Weather - 2026-09-25 - Evening - Scattered Showers
70°F 21°C
Scattered Showers
Pleasant near 75°F 24°C, scattered downpours possible, with steady humidity and steady pressure. Winds swinging from the WNW to the NW at 11 mph 18 km/h. Gusts up to 24 mph 39 km/h.

Saturday, September 26, 2026

Mid-Morning
Marion Weather - 2026-09-26 - Morning - Sunny
68°F 20°C
Sunny
Mid-Afternoon
Marion Weather - 2026-09-26 - Afternoon - Sunny
82°F 28°C
Sunny
Early-Evening
Marion Weather - 2026-09-26 - Evening - Sunny
74°F 24°C
Sunny
Balmy with temperatures reaching 82°F 28°C, sunny throughout the day, with lower humidity and steady pressure. Winds shifting from the NNW to the N at 8 mph 13 km/h.

Sunday, September 27, 2026

Mid-Morning
Marion Weather - 2026-09-27 - Morning - Sunny
64°F 18°C
Sunny
Mid-Afternoon
Marion Weather - 2026-09-27 - Afternoon - Overcast
68°F 20°C
Overcast
Early-Evening
Marion Weather - 2026-09-27 - Evening - Cloudy
64°F 18°C
Cloudy
Enjoyable around 68°F 20°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds turning from the ESE to the NNE at 11 mph 17 km/h.

Monday, September 28, 2026

Mid-Morning
Marion Weather - 2026-09-28 - Morning - Sunny
56°F 14°C
Sunny
Mid-Afternoon
Marion Weather - 2026-09-28 - Afternoon - Sunny
70°F 21°C
Sunny
Early-Evening
Marion Weather - 2026-09-28 - Evening - Sunny
62°F 16°C
Sunny
Mild temperatures up to 70°F 21°C, sunny throughout the day, with lower humidity and steady pressure. Winds switching from the NE to the E at 7 mph 11 km/h.

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Weather by the Numbers

Tue, 15th
Marion IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 101°F 38°C
Lo: 73°F 23°C
Sunrise 06:38 AM
Sunset 07:04 PM
Wind SW 12 mph19 km/h
Dew Point 64°F18°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 34%
Wed, 16th
Marion IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 101°F 38°C
Lo: 76°F 25°C
Sunrise 06:39 AM
Sunset 07:02 PM
Wind WSW 9 mph15 km/h
Dew Point 59°F15°C
uv Index 7
Barometric Pressure 30.21 in1023 mb
POP 1% *
Humidity 28%
Thu, 17th
Marion IL Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 102°F 39°C
Lo: 80°F 27°C
Sunrise 06:40 AM
Sunset 07:01 PM
Wind W 9 mph15 km/h
Dew Point 59°F15°C
uv Index 7
Barometric Pressure 30.18 in1022 mb
POP 1% *
Humidity 27%
Fri, 18th
Marion IL Weather - Friday, Sep 18, 2026 - Sunny
Hi: 102°F 39°C
Lo: 76°F 24°C
Sunrise 06:40 AM
Sunset 06:59 PM
Wind N 2 mph3 km/h
Dew Point 62°F16°C
uv Index 7
Barometric Pressure 30.09 in1019 mb
POP 0% *
Humidity 30%
Sat, 19th
Marion IL Weather - Saturday, Sep 19, 2026 - Overcast
Hi: 101°F 39°C
Lo: 79°F 26°C
Sunrise 06:41 AM
Sunset 06:58 PM
Wind W 11 mph17 km/h
Dew Point 55°F13°C
uv Index 6
Barometric Pressure 29.91 in1013 mb
POP 9% *
Humidity 23%
Sun, 20th
Marion IL Weather - Sunday, Sep 20, 2026 - Sunny
Hi: 102°F 39°C
Lo: 79°F 26°C
Sunrise 06:42 AM
Sunset 06:56 PM
Wind W 9 mph14 km/h
Dew Point 53°F12°C
uv Index 9
Barometric Pressure 29.85 in1011 mb
POP 1% *
Humidity 23%
Mon, 21st
Marion IL Weather - Monday, Sep 21, 2026 - Overcast
Hi: 97°F 36°C
Lo: 75°F 24°C
Sunrise 06:43 AM
Sunset 06:54 PM
Wind W 10 mph16 km/h
Dew Point 59°F15°C
uv Index 7
Barometric Pressure 29.85 in1011 mb
POP 5% *
Humidity 33%
Tue, 22nd
Marion IL Weather - Tuesday, Sep 22, 2026 - Overcast
Hi: 93°F 34°C
Lo: 68°F 20°C
Sunrise 06:44 AM
Sunset 06:53 PM
Wind ENE 7 mph11 km/h
Dew Point 64°F18°C
uv Index 6
Barometric Pressure 30 in1016 mb
POP 11% *
Humidity 52%
Wed, 23rd
Marion IL Weather - Wednesday, Sep 23, 2026 - Overcast
Hi: 87°F 31°C
Lo: 73°F 23°C
Sunrise 06:45 AM
Sunset 06:51 PM
Wind WNW 3 mph4 km/h
Dew Point 69°F21°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 22% *
Humidity 78%
Thu, 24th
Marion IL Weather - Thursday, Sep 24, 2026 - Overcast
Hi: 82°F 28°C
Lo: 65°F 18°C
Sunrise 06:46 AM
Sunset 06:50 PM
Wind WSW 8 mph13 km/h
Dew Point 67°F20°C
uv Index 6
Barometric Pressure 29.88 in1012 mb
POP 15% *
Humidity 67%
Fri, 25th
Marion IL Weather - Friday, Sep 25, 2026 - Patchy Rain Nearby
Hi: 76°F 24°C
Lo: 58°F 14°C
Sunrise 06:46 AM
Sunset 06:48 PM
Wind WNW 11 mph18 km/h
Dew Point 54°F12°C
uv Index 5
Barometric Pressure 29.77 in1008 mb
POP 36% *
Humidity 56%
Sat, 26th
Marion IL Weather - Saturday, Sep 26, 2026 - Sunny
Hi: 83°F 29°C
Lo: 61°F 16°C
Sunrise 06:47 AM
Sunset 06:47 PM
Wind ESE 11 mph18 km/h
Dew Point 52°F11°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 1% *
Humidity 42%
Sun, 27th
Marion IL Weather - Sunday, Sep 27, 2026 - Cloudy
Hi: 69°F 20°C
Lo: 57°F 14°C
Sunrise 06:48 AM
Sunset 06:45 PM
Wind SW 11 mph18 km/h
Dew Point 51°F11°C
uv Index 4
Barometric Pressure 30.18 in1022 mb
POP 12% *
Humidity 57%
Mon, 28th
Marion IL Weather - Monday, Sep 28, 2026 - Sunny
Hi: 71°F 21°C
Lo: 49°F 9°C
Sunrise 06:49 AM
Sunset 06:43 PM
Wind NE 10 mph16 km/h
Dew Point 34°F1°C
uv Index 5
Barometric Pressure 30.18 in1022 mb
POP 1% *
Humidity 32%
* POP = Probability of Precipitation. Data for 12:00 PM.