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Arthur IL Weather - Clear - 85°F
Clear
85°F
Updated 9:45 am
Feels Like 89°F
Humidity 65%
Wind WSW 6 mph
Barometer  30 in
Dew Point 72°F
Arthur IL Weather - Clear - 29°C
Clear
29°C
Updated 9:45 am
Feels Like 32°C
Humidity 65%
Wind WSW 10 km/h
Barometer  101.6 kPa
Dew Point 22°C
Arthur, IL Weather and Current Conditionsarthur il weather forecast

Arthur, IL Weather Forecast

Arthur Illinois WeatherArthur, Illinois Weather Weather Forecast
14 day API forecast for Arthur, Illinois. Note. The 7-day weather forecast for Arthur, IL is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
Arthur, IL Weather Forecast Dated: 945 AM Fri Sep 04 2026
Expect a very warm period with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Friday, September 4, 2026

Mid-Morning
Arthur Weather - 2026-09-04 - Morning - Sunny
84°F 29°C
Sunny
Mid-Afternoon
Arthur Weather - 2026-09-04 - Afternoon - Overcast
97°F 36°C
Overcast
Early-Evening
Arthur Weather - 2026-09-04 - Evening - Overcast
92°F 34°C
Overcast
Sizzling hot near 97°F 36°C with a heat index reaching 102°F 39°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling. Winds turning from the SW to the S at 9 mph 14 km/h.

Saturday, September 5, 2026

Mid-Morning
Arthur Weather - 2026-09-05 - Morning - Partly Cloudy
84°F 29°C
Partly Cloudy
Mid-Afternoon
Arthur Weather - 2026-09-05 - Afternoon - Nearby Thunderstorms
92°F 33°C
Nearby Thunderstorms
Early-Evening
Arthur Weather - 2026-09-05 - Evening - Sunny
81°F 27°C
Sunny
Hot and sweltering around 92°F 33°C (heat index 98°F 37°C), locally heavy thunderstorms at times, with increasing humidity and steady pressure. Winds switching from the W to the NE at 11 mph 18 km/h.

Sunday, September 6, 2026

Mid-Morning
Arthur Weather - 2026-09-06 - Morning - Sunny
70°F 21°C
Sunny
Mid-Afternoon
Arthur Weather - 2026-09-06 - Afternoon - Sunny
82°F 28°C
Sunny
Early-Evening
Arthur Weather - 2026-09-06 - Evening - Sunny
73°F 23°C
Sunny
Quite warm around 82°F 28°C, sunny throughout the day, with steady humidity and steady pressure. Winds ENE at 14 mph 22 km/h. Gusts up to 22 mph 35 km/h.

Monday, September 7, 2026

Mid-Morning
Arthur Weather - 2026-09-07 - Morning - Sunny
66°F 19°C
Sunny
Mid-Afternoon
Arthur Weather - 2026-09-07 - Afternoon - Sunny
82°F 28°C
Sunny
Early-Evening
Arthur Weather - 2026-09-07 - Evening - Partly Cloudy
73°F 23°C
Partly Cloudy
Warm temperatures up to 82°F 28°C, sunny throughout the day, with steady humidity and steady pressure. Winds out of the ENE at 10 mph 16 km/h.

Tuesday, September 8, 2026

Mid-Morning
Arthur Weather - 2026-09-08 - Morning - Partly Cloudy
72°F 22°C
Partly Cloudy
Mid-Afternoon
Arthur Weather - 2026-09-08 - Afternoon - Sunny
95°F 35°C
Sunny
Early-Evening
Arthur Weather - 2026-09-08 - Evening - Sunny
88°F 31°C
Sunny
Very hot with a high of 95°F 35°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling. Winds blowing from the S at 10 mph 16 km/h. Gusts up to 21 mph 34 km/h.

Wednesday, September 9, 2026

Mid-Morning
Arthur Weather - 2026-09-09 - Morning - Cloudy
81°F 27°C
Cloudy
Mid-Afternoon
Arthur Weather - 2026-09-09 - Afternoon - Partly Cloudy
96°F 35°C
Partly Cloudy
Early-Evening
Arthur Weather - 2026-09-09 - Evening - Partly Cloudy
81°F 28°C
Partly Cloudy
Very hot with temperatures reaching 96°F 35°C, overcast in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds turning from the SW to the N at 11 mph 17 km/h. Gusts up to 23 mph 37 km/h.

Thursday, September 10, 2026

Mid-Morning
Arthur Weather - 2026-09-10 - Morning - Sunny
69°F 20°C
Sunny
Mid-Afternoon
Arthur Weather - 2026-09-10 - Afternoon - Overcast
78°F 26°C
Overcast
Early-Evening
Arthur Weather - 2026-09-10 - Evening - Overcast
70°F 22°C
Overcast
Comfortable with temperatures reaching 78°F 26°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the NNE to the NE at 8 mph 13 km/h.

Friday, September 11, 2026

Mid-Morning
Arthur Weather - 2026-09-11 - Morning - Heavy Rain
57°F 14°C
Heavy Rain
Mid-Afternoon
Arthur Weather - 2026-09-11 - Afternoon - Light Showers
58°F 15°C
Light Showers
Early-Evening
Arthur Weather - 2026-09-11 - Evening - Light Fog
59°F 15°C
Light Fog
Cool with a high near 58°F 15°C, showers lingering into the afternoon before clearing, with steady humidity and steady pressure. Winds moving from the S to the E at 8 mph 13 km/h.

Saturday, September 12, 2026

Mid-Morning
Arthur Weather - 2026-09-12 - Morning - Light Showers
60°F 15°C
Light Showers
Mid-Afternoon
Arthur Weather - 2026-09-12 - Afternoon - Light Showers
66°F 19°C
Light Showers
Early-Evening
Arthur Weather - 2026-09-12 - Evening - Scattered Showers
67°F 20°C
Scattered Showers
Refreshing around 66°F 19°C, locally heavy downpours at times, with steady humidity and steady pressure.

Sunday, September 13, 2026

Mid-Morning
Arthur Weather - 2026-09-13 - Morning - Fog
71°F 22°C
Fog
Mid-Afternoon
Arthur Weather - 2026-09-13 - Afternoon - Scattered Showers
81°F 27°C
Scattered Showers
Early-Evening
Arthur Weather - 2026-09-13 - Evening - Scattered Showers
69°F 21°C
Scattered Showers
Warm and summery around 81°F 27°C (feels like 84°F 29°C), periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds increasing from the W at 3 mph 5 km/h to SE at 14 mph 23 km/h. Gusts up to 24 mph 37 km/h.

Monday, September 14, 2026

Mid-Morning
Arthur Weather - 2026-09-14 - Morning - Sunny
58°F 14°C
Sunny
Mid-Afternoon
Arthur Weather - 2026-09-14 - Afternoon - Sunny
67°F 20°C
Sunny
Early-Evening
Arthur Weather - 2026-09-14 - Evening - Sunny
61°F 17°C
Sunny
Comfortable at 67°F 20°C, sunny throughout the day, with steady humidity and steady pressure. Winds shifting from the NE to the E at 6 mph 10 km/h.

Tuesday, September 15, 2026

Mid-Morning
Arthur Weather - 2026-09-15 - Morning - Sunny
58°F 14°C
Sunny
Mid-Afternoon
Arthur Weather - 2026-09-15 - Afternoon - Partly Cloudy
72°F 22°C
Partly Cloudy
Early-Evening
Arthur Weather - 2026-09-15 - Evening - Sunny
69°F 21°C
Sunny
Comfortable with temperatures reaching 72°F 22°C, partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with steady humidity and barometric pressure falling. Winds turning from the SE to the W at 9 mph 14 km/h.

Wednesday, September 16, 2026

Mid-Morning
Arthur Weather - 2026-09-16 - Morning - Scattered Showers
81°F 27°C
Scattered Showers
Mid-Afternoon
Arthur Weather - 2026-09-16 - Afternoon - Sunny
99°F 37°C
Sunny
Early-Evening
Arthur Weather - 2026-09-16 - Evening - Sunny
92°F 34°C
Sunny
Sizzling hot with 99°F 37°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds switching from the SSW to the S at 12 mph 19 km/h. Gusts up to 23 mph 37 km/h.

Thursday, September 17, 2026

Mid-Morning
Arthur Weather - 2026-09-17 - Morning - Scattered Showers
82°F 28°C
Scattered Showers
Mid-Afternoon
Arthur Weather - 2026-09-17 - Afternoon - Partly Cloudy
97°F 36°C
Partly Cloudy
Early-Evening
Arthur Weather - 2026-09-17 - Evening - Sunny
79°F 26°C
Sunny
Hot temperatures near 97°F 36°C, scattered downpours possible, with increasing humidity and steady pressure. Winds out of the WSW at 11 mph 18 km/h.

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Weather by the Numbers

Fri, 4th
Arthur IL Weather - Friday, Sep 4, 2026 - Sunny
Hi: 99°F 37°C
Lo: 74°F 23°C
Sunrise 06:25 AM
Sunset 07:20 PM
Wind WSW 10 mph15 km/h
Dew Point 74°F23°C
uv Index 8
Barometric Pressure 29.94 in1014 mb
POP 1% *
Humidity 45%
Sat, 5th
Arthur IL Weather - Saturday, Sep 5, 2026 - Thundery Outbreaks In Nearby
Hi: 94°F 34°C
Lo: 71°F 22°C
Sunrise 06:25 AM
Sunset 07:19 PM
Wind NNW 7 mph12 km/h
Dew Point 66°F19°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 10% *
Humidity 40%
Sun, 6th
Arthur IL Weather - Sunday, Sep 6, 2026 - Sunny
Hi: 82°F 28°C
Lo: 65°F 19°C
Sunrise 06:26 AM
Sunset 07:17 PM
Wind ENE 13 mph22 km/h
Dew Point 61°F16°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 2% *
Humidity 52%
Mon, 7th
Arthur IL Weather - Monday, Sep 7, 2026 - Sunny
Hi: 82°F 28°C
Lo: 60°F 16°C
Sunrise 06:27 AM
Sunset 07:15 PM
Wind E 9 mph15 km/h
Dew Point 53°F12°C
uv Index 6
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 44%
Tue, 8th
Arthur IL Weather - Tuesday, Sep 8, 2026 - Sunny
Hi: 96°F 35°C
Lo: 64°F 18°C
Sunrise 06:28 AM
Sunset 07:14 PM
Wind SSW 11 mph17 km/h
Dew Point 55°F13°C
uv Index 8
Barometric Pressure 30.06 in1018 mb
POP 0% *
Humidity 31%
Wed, 9th
Arthur IL Weather - Wednesday, Sep 9, 2026 - Patchy Rain Nearby
Hi: 99°F 37°C
Lo: 70°F 21°C
Sunrise 06:29 AM
Sunset 07:12 PM
Wind W 13 mph22 km/h
Dew Point 59°F15°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 4% *
Humidity 32%
Thu, 10th
Arthur IL Weather - Thursday, Sep 10, 2026 - Overcast
Hi: 79°F 26°C
Lo: 63°F 17°C
Sunrise 06:30 AM
Sunset 07:10 PM
Wind NNE 8 mph13 km/h
Dew Point 51°F11°C
uv Index 5
Barometric Pressure 30.15 in1021 mb
POP 10% *
Humidity 41%
Fri, 11th
Arthur IL Weather - Friday, Sep 11, 2026 - Moderate Rain
Hi: 64°F 18°C
Lo: 57°F 14°C
Sunrise 06:31 AM
Sunset 07:09 PM
Wind ESE 7 mph12 km/h
Dew Point 55°F13°C
uv Index 3
Barometric Pressure 30.06 in1018 mb
POP 85% *
Humidity 95%
Sat, 12th
Arthur IL Weather - Saturday, Sep 12, 2026 - Fog
Hi: 68°F 20°C
Lo: 59°F 15°C
Sunrise 06:32 AM
Sunset 07:07 PM
Wind ESE 8 mph12 km/h
Dew Point 61°F16°C
uv Index 4
Barometric Pressure 29.97 in1015 mb
POP 50% *
Humidity 96%
Sun, 13th
Arthur IL Weather - Sunday, Sep 13, 2026 - Partly Cloudy
Hi: 82°F 28°C
Lo: 62°F 17°C
Sunrise 06:33 AM
Sunset 07:06 PM
Wind NNW 6 mph9 km/h
Dew Point 67°F20°C
uv Index 7
Barometric Pressure 29.97 in1015 mb
POP 13% *
Humidity 68%
Mon, 14th
Arthur IL Weather - Monday, Sep 14, 2026 - Sunny
Hi: 68°F 20°C
Lo: 53°F 12°C
Sunrise 06:34 AM
Sunset 07:04 PM
Wind NE 11 mph17 km/h
Dew Point 45°F7°C
uv Index 5
Barometric Pressure 30.24 in1024 mb
POP 2% *
Humidity 50%
Tue, 15th
Arthur IL Weather - Tuesday, Sep 15, 2026 - Partly Cloudy
Hi: 73°F 23°C
Lo: 51°F 11°C
Sunrise 06:35 AM
Sunset 07:02 PM
Wind SSE 11 mph18 km/h
Dew Point 43°F6°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 3% *
Humidity 42%
Wed, 16th
Arthur IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 100°F 38°C
Lo: 63°F 17°C
Sunrise 06:36 AM
Sunset 07:01 PM
Wind SSW 17 mph27 km/h
Dew Point 60°F16°C
uv Index 9
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 32%
Thu, 17th
Arthur IL Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 97°F 36°C
Lo: 71°F 22°C
Sunrise 06:37 AM
Sunset 06:59 PM
Wind SW 11 mph18 km/h
Dew Point 63°F17°C
uv Index 8
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 38%
* POP = Probability of Precipitation. Data for 12:00 PM.