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Bethalto IL Weather - Partly Cloudy - 89°F
Partly Cloudy
89°F
Updated 3:25 pm
Feels Like 95°F
Humidity 55%
Wind SSW 3 mph
Barometer  30.22 in
Dew Point 71°F
Bethalto IL Weather - Partly Cloudy - 32°C
Partly Cloudy
32°C
Updated 3:25 pm
Feels Like 35°C
Humidity 55%
Wind SSW 5 km/h
Barometer  102.3 kPa
Dew Point 22°C
Bethalto, IL Weather and Current Conditionsbethalto il weather forecast

Bethalto, IL Weather Forecast

Bethalto Illinois WeatherBethalto, Illinois Weather Weather Forecast
14 Day API Bethalto, IL Weather Forecast. Note: Our 7 day Bethalto, Illinois weather forecast is our most reliable, and specific forecast. This model should only be used as a probable scenario. Forecasting more than 7 days ahead is challenging.
Bethalto, IL Weather Forecast Dated: 325 PM Wed Sep 16 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.

Wednesday, September 16, 2026

Mid-Morning
Bethalto Weather - 2026-09-16 - Morning - Light Showers
75°F 24°C
Light Showers
Mid-Afternoon
Bethalto Weather - 2026-09-16 - Afternoon - Overcast
91°F 33°C
Overcast
Early-Evening
Bethalto Weather - 2026-09-16 - Evening - Sunny
85°F 29°C
Sunny
Sizzling hot near 91°F 33°C with a heat index reaching 96°F 36°C, early showers breaking for a drier afternoon, with lower humidity and steady pressure.

Thursday, September 17, 2026

Mid-Morning
Bethalto Weather - 2026-09-17 - Morning - Sunny
80°F 26°C
Sunny
Mid-Afternoon
Bethalto Weather - 2026-09-17 - Afternoon - Sunny
97°F 36°C
Sunny
Early-Evening
Bethalto Weather - 2026-09-17 - Evening - Sunny
90°F 32°C
Sunny
Hot and sweltering around 97°F 36°C (heat index 100°F 38°C), sunny throughout the day, with lower humidity and steady pressure. Winds turning from the NW to the SSW at 3 mph 4 km/h.

Friday, September 18, 2026

Mid-Morning
Bethalto Weather - 2026-09-18 - Morning - Sunny
82°F 28°C
Sunny
Mid-Afternoon
Bethalto Weather - 2026-09-18 - Afternoon - Sunny
97°F 36°C
Sunny
Early-Evening
Bethalto Weather - 2026-09-18 - Evening - Cloudy
91°F 33°C
Cloudy
Sizzling hot with 97°F 36°C, sunny through the afternoon, turning cloudy this evening, with lower humidity and barometric pressure falling.

Saturday, September 19, 2026

Mid-Morning
Bethalto Weather - 2026-09-19 - Morning - Overcast
82°F 28°C
Overcast
Mid-Afternoon
Bethalto Weather - 2026-09-19 - Afternoon - Overcast
88°F 31°C
Overcast
Early-Evening
Bethalto Weather - 2026-09-19 - Evening - Overcast
85°F 29°C
Overcast
Warm temperatures up to 88°F 31°C, overcast throughout the day, with steady humidity and steady pressure. Winds switching from the WSW to the SSE at 7 mph 11 km/h.

Sunday, September 20, 2026

Mid-Morning
Bethalto Weather - 2026-09-20 - Morning - Overcast
80°F 26°C
Overcast
Mid-Afternoon
Bethalto Weather - 2026-09-20 - Afternoon - Sunny
96°F 35°C
Sunny
Early-Evening
Bethalto Weather - 2026-09-20 - Evening - Sunny
83°F 29°C
Sunny
Very hot with a high of 96°F 35°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds increasing from the NW at 3 mph 5 km/h to N at 11 mph 18 km/h.

Monday, September 21, 2026

Mid-Morning
Bethalto Weather - 2026-09-21 - Morning - Scattered Showers
73°F 23°C
Scattered Showers
Mid-Afternoon
Bethalto Weather - 2026-09-21 - Afternoon - Light Showers
80°F 27°C
Light Showers
Early-Evening
Bethalto Weather - 2026-09-21 - Evening - Scattered Showers
75°F 24°C
Scattered Showers
Warm and summery near 80°F 27°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds swinging from the W to the S at 5 mph 8 km/h.

Tuesday, September 22, 2026

Mid-Morning
Bethalto Weather - 2026-09-22 - Morning - Sunny
69°F 21°C
Sunny
Mid-Afternoon
Bethalto Weather - 2026-09-22 - Afternoon - Sunny
83°F 29°C
Sunny
Early-Evening
Bethalto Weather - 2026-09-22 - Evening - Sunny
77°F 25°C
Sunny
Balmy with temperatures reaching 83°F 29°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds shifting from the NW to the SSE at 6 mph 10 km/h.

Wednesday, September 23, 2026

Mid-Morning
Bethalto Weather - 2026-09-23 - Morning - Sunny
74°F 24°C
Sunny
Mid-Afternoon
Bethalto Weather - 2026-09-23 - Afternoon - Overcast
90°F 32°C
Overcast
Early-Evening
Bethalto Weather - 2026-09-23 - Evening - Partly Cloudy
85°F 29°C
Partly Cloudy
Sizzling hot with 90°F 32°C, cloudy through the afternoon, turning overcast this evening, with lower humidity and barometric pressure falling. Winds turning from the S to the SW at 11 mph 18 km/h. Gusts up to 22 mph 35 km/h.

Thursday, September 24, 2026

Mid-Morning
Bethalto Weather - 2026-09-24 - Morning - Scattered Showers
63°F 17°C
Scattered Showers
Mid-Afternoon
Bethalto Weather - 2026-09-24 - Afternoon - Sunny
71°F 22°C
Sunny
Early-Evening
Bethalto Weather - 2026-09-24 - Evening - Sunny
65°F 18°C
Sunny
Mild temperatures up to 71°F 22°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds switching from the NW to the NNW at 12 mph 19 km/h. Gusts up to 22 mph 36 km/h.

Friday, September 25, 2026

Mid-Morning
Bethalto Weather - 2026-09-25 - Morning - Sunny
56°F 14°C
Sunny
Mid-Afternoon
Bethalto Weather - 2026-09-25 - Afternoon - Sunny
72°F 22°C
Sunny
Early-Evening
Bethalto Weather - 2026-09-25 - Evening - Sunny
66°F 19°C
Sunny
Mild with a high of 72°F 22°C, sunny throughout the day, with lower humidity and steady pressure. Winds moving from the NNW to the NE at 6 mph 10 km/h.

Saturday, September 26, 2026

Mid-Morning
Bethalto Weather - 2026-09-26 - Morning - Sunny
63°F 17°C
Sunny
Mid-Afternoon
Bethalto Weather - 2026-09-26 - Afternoon - Sunny
79°F 26°C
Sunny
Early-Evening
Bethalto Weather - 2026-09-26 - Evening - Sunny
71°F 22°C
Sunny
Pleasant near 79°F 26°C, sunny throughout the day, with lower humidity and steady pressure. Winds swinging from the SE to the ESE at 8 mph 12 km/h.

Sunday, September 27, 2026

Mid-Morning
Bethalto Weather - 2026-09-27 - Morning - Sunny
67°F 19°C
Sunny
Mid-Afternoon
Bethalto Weather - 2026-09-27 - Afternoon - Sunny
86°F 30°C
Sunny
Early-Evening
Bethalto Weather - 2026-09-27 - Evening - Sunny
78°F 26°C
Sunny
Balmy with temperatures reaching 86°F 30°C, sunny throughout the day, with lower humidity and barometric pressure falling. Winds out of the S at 9 mph 15 km/h.

Monday, September 28, 2026

Mid-Morning
Bethalto Weather - 2026-09-28 - Morning - Sunny
75°F 24°C
Sunny
Mid-Afternoon
Bethalto Weather - 2026-09-28 - Afternoon - Partly Cloudy
87°F 31°C
Partly Cloudy
Early-Evening
Bethalto Weather - 2026-09-28 - Evening - Overcast
83°F 28°C
Overcast
Quite warm around 87°F 31°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and barometric pressure falling. Winds blowing from the SSE at 11 mph 18 km/h.

Tuesday, September 29, 2026

Mid-Morning
Bethalto Weather - 2026-09-29 - Morning - Overcast
78°F 26°C
Overcast
Mid-Afternoon
Bethalto Weather - 2026-09-29 - Afternoon - Overcast
80°F 27°C
Overcast
Early-Evening
Bethalto Weather - 2026-09-29 - Evening - Light Showers
71°F 22°C
Light Showers
Quite warm reaching 80°F 27°C, feeling like 83°F 28°C during peak afternoon, mainly dry until evening showers arrive, with increasing humidity and steady pressure. Winds switching from the WSW to the ESE at 8 mph 13 km/h.

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Weather by the Numbers

Wed, 16th
Bethalto IL Weather - Wednesday, Sep 16, 2026 - Overcast
Hi: 91°F 33°C
Lo: 72°F 22°C
Sunrise 06:42 AM
Sunset 07:07 PM
Wind SSW 6 mph9 km/h
Dew Point 71°F21°C
uv Index 6
Barometric Pressure 30.21 in1023 mb
POP 15% *
Humidity 64%
Thu, 17th
Bethalto IL Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 97°F 36°C
Lo: 75°F 24°C
Sunrise 06:43 AM
Sunset 07:05 PM
Wind WNW 4 mph7 km/h
Dew Point 66°F19°C
uv Index 6
Barometric Pressure 30.18 in1022 mb
POP 1% *
Humidity 43%
Fri, 18th
Bethalto IL Weather - Friday, Sep 18, 2026 - Sunny
Hi: 97°F 36°C
Lo: 76°F 25°C
Sunrise 06:44 AM
Sunset 07:04 PM
Wind S 4 mph7 km/h
Dew Point 66°F19°C
uv Index 6
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 42%
Sat, 19th
Bethalto IL Weather - Saturday, Sep 19, 2026 - Overcast
Hi: 88°F 31°C
Lo: 75°F 24°C
Sunrise 06:45 AM
Sunset 07:02 PM
Wind WNW 5 mph9 km/h
Dew Point 60°F16°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 10% *
Humidity 44%
Sun, 20th
Bethalto IL Weather - Sunday, Sep 20, 2026 - Sunny
Hi: 96°F 35°C
Lo: 72°F 22°C
Sunrise 06:46 AM
Sunset 07:00 PM
Wind W 7 mph11 km/h
Dew Point 62°F17°C
uv Index 8
Barometric Pressure 29.83 in1010 mb
POP 1% *
Humidity 39%
Mon, 21st
Bethalto IL Weather - Monday, Sep 21, 2026 - Overcast
Hi: 80°F 27°C
Lo: 68°F 20°C
Sunrise 06:47 AM
Sunset 06:59 PM
Wind WNW 5 mph8 km/h
Dew Point 64°F18°C
uv Index 6
Barometric Pressure 29.85 in1011 mb
POP 23% *
Humidity 64%
Tue, 22nd
Bethalto IL Weather - Tuesday, Sep 22, 2026 - Sunny
Hi: 84°F 29°C
Lo: 64°F 18°C
Sunrise 06:48 AM
Sunset 06:57 PM
Wind NW 9 mph15 km/h
Dew Point 56°F13°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 1% *
Humidity 47%
Wed, 23rd
Bethalto IL Weather - Wednesday, Sep 23, 2026 - Overcast
Hi: 91°F 33°C
Lo: 67°F 19°C
Sunrise 06:49 AM
Sunset 06:55 PM
Wind SSW 10 mph16 km/h
Dew Point 53°F11°C
uv Index 6
Barometric Pressure 30 in1016 mb
POP 9% *
Humidity 33%
Thu, 24th
Bethalto IL Weather - Thursday, Sep 24, 2026 - Sunny
Hi: 72°F 22°C
Lo: 57°F 14°C
Sunrise 06:50 AM
Sunset 06:54 PM
Wind NW 18 mph30 km/h
Dew Point 44°F6°C
uv Index 6
Barometric Pressure 29.91 in1013 mb
POP 1% *
Humidity 42%
Fri, 25th
Bethalto IL Weather - Friday, Sep 25, 2026 - Sunny
Hi: 73°F 23°C
Lo: 49°F 10°C
Sunrise 06:51 AM
Sunset 06:52 PM
Wind N 8 mph12 km/h
Dew Point 44°F7°C
uv Index 5
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 45%
Sat, 26th
Bethalto IL Weather - Saturday, Sep 26, 2026 - Sunny
Hi: 80°F 27°C
Lo: 54°F 12°C
Sunrise 06:52 AM
Sunset 06:51 PM
Wind SE 8 mph12 km/h
Dew Point 49°F9°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 1% *
Humidity 43%
Sun, 27th
Bethalto IL Weather - Sunday, Sep 27, 2026 - Sunny
Hi: 87°F 31°C
Lo: 57°F 14°C
Sunrise 06:52 AM
Sunset 06:49 PM
Wind SSE 8 mph13 km/h
Dew Point 47°F8°C
uv Index 7
Barometric Pressure 30.09 in1019 mb
POP 1% *
Humidity 33%
Mon, 28th
Bethalto IL Weather - Monday, Sep 28, 2026 - Sunny
Hi: 88°F 31°C
Lo: 67°F 19°C
Sunrise 06:53 AM
Sunset 06:47 PM
Wind SSE 12 mph19 km/h
Dew Point 61°F16°C
uv Index 7
Barometric Pressure 30.03 in1017 mb
POP 2% *
Humidity 45%
Tue, 29th
Bethalto IL Weather - Tuesday, Sep 29, 2026 - Overcast
Hi: 83°F 28°C
Lo: 68°F 20°C
Sunrise 06:54 AM
Sunset 06:46 PM
Wind WNW 10 mph16 km/h
Dew Point 65°F18°C
uv Index 6
Barometric Pressure 30 in1016 mb
POP 13% *
Humidity 57%
* POP = Probability of Precipitation. Data for 12:00 PM.