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Brookhaven IL Weather - Clear - 86°F
Clear
86°F
Updated 7:54 pm
Feels Like 95°F
Humidity 65%
Wind SSW 7 mph
Barometer  29.89 in
Dew Point 73°F
Brookhaven IL Weather - Clear - 30°C
Clear
30°C
Updated 7:54 pm
Feels Like 35°C
Humidity 65%
Wind SSW 11 km/h
Barometer  101.2 kPa
Dew Point 23°C
Brookhaven, IL Weather and Current Conditionsbrookhaven il weather forecast

Brookhaven, IL Weather Forecast

Brookhaven Illinois WeatherBrookhaven, Illinois Weather Weather Forecast
14 day API forecast for Brookhaven, Illinois. Note. The 7-day weather forecast for Brookhaven, 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.
Brookhaven, IL Weather Forecast Dated: 754 PM Thu Sep 03 2026
Expect a very warm period with a mix of sun and clouds and occasional showers over the coming period. generally humid conditions and no major pressure swings will dominate. Isolated storms at times.

Thursday, September 3, 2026

Mid-Morning
Brookhaven Weather - 2026-09-03 - Morning - Scattered Showers
78°F 26°C
Scattered Showers
Mid-Afternoon
Brookhaven Weather - 2026-09-03 - Afternoon - Scattered Showers
99°F 37°C
Scattered Showers
Early-Evening
Brookhaven Weather - 2026-09-03 - Evening - Scattered Showers
88°F 31°C
Scattered Showers
Sizzling hot near 99°F 37°C with a heat index reaching 113°F 45°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. A stray shower or storm late in the day. Winds turning from the WSW to the SSE at 7 mph 11 km/h.

Friday, September 4, 2026

Mid-Morning
Brookhaven Weather - 2026-09-04 - Morning - Overcast
75°F 24°C
Overcast
Mid-Afternoon
Brookhaven Weather - 2026-09-04 - Afternoon - Nearby Thunderstorms
87°F 31°C
Nearby Thunderstorms
Early-Evening
Brookhaven Weather - 2026-09-04 - Evening - Nearby Thunderstorms
82°F 28°C
Nearby Thunderstorms
Quite warm reaching 87°F 31°C, feeling like 94°F 34°C during peak afternoon, locally heavy thunderstorms at times, with steady humidity and steady pressure. Winds switching from the ESE to the ENE at 7 mph 10 km/h.

Saturday, September 5, 2026

Mid-Morning
Brookhaven Weather - 2026-09-05 - Morning - Scattered Showers
72°F 22°C
Scattered Showers
Mid-Afternoon
Brookhaven Weather - 2026-09-05 - Afternoon - Partly Cloudy
83°F 28°C
Partly Cloudy
Early-Evening
Brookhaven Weather - 2026-09-05 - Evening - Sunny
73°F 23°C
Sunny
Very warm near 83°F 28°C, though humidity makes it feel like 87°F 31°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds moving from the ENE to the NE at 10 mph 16 km/h.

Sunday, September 6, 2026

Mid-Morning
Brookhaven Weather - 2026-09-06 - Morning - Sunny
69°F 21°C
Sunny
Mid-Afternoon
Brookhaven Weather - 2026-09-06 - Afternoon - Sunny
76°F 24°C
Sunny
Early-Evening
Brookhaven Weather - 2026-09-06 - Evening - Sunny
69°F 21°C
Sunny
Mild temperatures up to 76°F 24°C, sunny throughout the day, with steady humidity and steady pressure. Winds swinging from the E to the NE at 8 mph 13 km/h.

Monday, September 7, 2026

Mid-Morning
Brookhaven Weather - 2026-09-07 - Morning - Cloudy
64°F 18°C
Cloudy
Mid-Afternoon
Brookhaven Weather - 2026-09-07 - Afternoon - Sunny
75°F 24°C
Sunny
Early-Evening
Brookhaven Weather - 2026-09-07 - Evening - Sunny
71°F 21°C
Sunny
Mild with a high of 75°F 24°C, overcast in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds blowing from the E at 10 mph 16 km/h.

Tuesday, September 8, 2026

Mid-Morning
Brookhaven Weather - 2026-09-08 - Morning - Overcast
66°F 19°C
Overcast
Mid-Afternoon
Brookhaven Weather - 2026-09-08 - Afternoon - Overcast
76°F 25°C
Overcast
Early-Evening
Brookhaven Weather - 2026-09-08 - Evening - Partly Cloudy
77°F 25°C
Partly Cloudy
Pleasant near 76°F 25°C, overcast in the morning, cloudy in the afternoon, and sunny this evening, with steady humidity and barometric pressure falling. Winds turning from the SSE to the S at 13 mph 21 km/h. Gusts up to 30 mph 48 km/h.

Wednesday, September 9, 2026

Mid-Morning
Brookhaven Weather - 2026-09-09 - Morning - Partly Cloudy
76°F 25°C
Partly Cloudy
Mid-Afternoon
Brookhaven Weather - 2026-09-09 - Afternoon - Scattered Showers
83°F 29°C
Scattered Showers
Early-Evening
Brookhaven Weather - 2026-09-09 - Evening - Partly Cloudy
75°F 24°C
Partly Cloudy
Balmy with temperatures reaching 83°F 29°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds switching from the W to the NW at 8 mph 13 km/h.

Thursday, September 10, 2026

Mid-Morning
Brookhaven Weather - 2026-09-10 - Morning - Cloudy
70°F 21°C
Cloudy
Mid-Afternoon
Brookhaven Weather - 2026-09-10 - Afternoon - Light Showers
75°F 24°C
Light Showers
Early-Evening
Brookhaven Weather - 2026-09-10 - Evening - Overcast
74°F 23°C
Overcast
Enjoyable around 75°F 24°C, clouds building with afternoon showers likely, with steady humidity and steady pressure.

Friday, September 11, 2026

Mid-Morning
Brookhaven Weather - 2026-09-11 - Morning - Scattered Showers
65°F 18°C
Scattered Showers
Mid-Afternoon
Brookhaven Weather - 2026-09-11 - Afternoon - Partly Cloudy
75°F 24°C
Partly Cloudy
Early-Evening
Brookhaven Weather - 2026-09-11 - Evening - Sunny
72°F 22°C
Sunny
Mild temperatures up to 75°F 24°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds blowing from the ESE at 12 mph 19 km/h. Gusts up to 22 mph 35 km/h.

Saturday, September 12, 2026

Mid-Morning
Brookhaven Weather - 2026-09-12 - Morning - Sunny
69°F 20°C
Sunny
Mid-Afternoon
Brookhaven Weather - 2026-09-12 - Afternoon - Sunny
84°F 29°C
Sunny
Early-Evening
Brookhaven Weather - 2026-09-12 - Evening - Sunny
82°F 28°C
Sunny
Warm and summery around 84°F 29°C (feels like 88°F 31°C), sunny throughout the day, with steady humidity and steady pressure. Winds swinging from the ESE to the SE at 8 mph 12 km/h.

Sunday, September 13, 2026

Mid-Morning
Brookhaven Weather - 2026-09-13 - Morning - Partly Cloudy
79°F 26°C
Partly Cloudy
Mid-Afternoon
Brookhaven Weather - 2026-09-13 - Afternoon - Sunny
88°F 31°C
Sunny
Early-Evening
Brookhaven Weather - 2026-09-13 - Evening - Sunny
81°F 28°C
Sunny
Quite warm reaching 88°F 31°C, feeling like 94°F 34°C during peak afternoon, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds out of the SW at 12 mph 19 km/h.

Monday, September 14, 2026

Mid-Morning
Brookhaven Weather - 2026-09-14 - Morning - Scattered Showers
74°F 23°C
Scattered Showers
Mid-Afternoon
Brookhaven Weather - 2026-09-14 - Afternoon - Overcast
76°F 25°C
Overcast
Early-Evening
Brookhaven Weather - 2026-09-14 - Evening - Scattered Showers
73°F 23°C
Scattered Showers
Comfortable with temperatures reaching 76°F 25°C, locally heavy downpours at times, with steady humidity and barometric pressure falling. Winds blowing from the SW at 10 mph 17 km/h.

Tuesday, September 15, 2026

Mid-Morning
Brookhaven Weather - 2026-09-15 - Morning - Sunny
60°F 15°C
Sunny
Mid-Afternoon
Brookhaven Weather - 2026-09-15 - Afternoon - Sunny
65°F 19°C
Sunny
Early-Evening
Brookhaven Weather - 2026-09-15 - Evening - Scattered Showers
60°F 15°C
Scattered Showers
Refreshing around 65°F 19°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds switching from the W to the WNW at 12 mph 19 km/h. Gusts up to 25 mph 40 km/h.

Wednesday, September 16, 2026

Mid-Morning
Brookhaven Weather - 2026-09-16 - Morning - Sunny
54°F 12°C
Sunny
Mid-Afternoon
Brookhaven Weather - 2026-09-16 - Afternoon - Partly Cloudy
62°F 17°C
Partly Cloudy
Early-Evening
Brookhaven Weather - 2026-09-16 - Evening - Overcast
58°F 14°C
Overcast
Mildly cool near 62°F 17°C, sunny in the morning, becoming cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the NNW to the WSW at 6 mph 10 km/h.

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Weather by the Numbers

Thu, 3rd
Brookhaven IL Weather - Thursday, Sep 3, 2026 - Patchy Rain Nearby
Hi: 99°F 37°C
Lo: 75°F 24°C
Sunrise 06:21 AM
Sunset 07:23 PM
Wind W 6 mph10 km/h
Dew Point 76°F25°C
uv Index 2
Barometric Pressure 29.94 in1014 mb
POP 17% *
Humidity 53%
Fri, 4th
Brookhaven IL Weather - Friday, Sep 4, 2026 - Thundery Outbreaks In Nearby
Hi: 87°F 31°C
Lo: 71°F 22°C
Sunrise 06:22 AM
Sunset 07:22 PM
Wind SW 10 mph17 km/h
Dew Point 70°F21°C
uv Index 5
Barometric Pressure 29.88 in1012 mb
POP 15% *
Humidity 66%
Sat, 5th
Brookhaven IL Weather - Saturday, Sep 5, 2026 - Sunny
Hi: 83°F 28°C
Lo: 69°F 21°C
Sunrise 06:23 AM
Sunset 07:20 PM
Wind NNE 5 mph8 km/h
Dew Point 70°F21°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 7% *
Humidity 72%
Sun, 6th
Brookhaven IL Weather - Sunday, Sep 6, 2026 - Sunny
Hi: 76°F 25°C
Lo: 64°F 18°C
Sunrise 06:24 AM
Sunset 07:18 PM
Wind E 9 mph14 km/h
Dew Point 59°F15°C
uv Index 7
Barometric Pressure 30.09 in1019 mb
POP 4% *
Humidity 57%
Mon, 7th
Brookhaven IL Weather - Monday, Sep 7, 2026 - Overcast
Hi: 75°F 24°C
Lo: 64°F 18°C
Sunrise 06:25 AM
Sunset 07:17 PM
Wind ESE 8 mph13 km/h
Dew Point 55°F13°C
uv Index 5
Barometric Pressure 30.15 in1021 mb
POP 12% *
Humidity 51%
Tue, 8th
Brookhaven IL Weather - Tuesday, Sep 8, 2026 - Overcast
Hi: 78°F 25°C
Lo: 63°F 17°C
Sunrise 06:26 AM
Sunset 07:15 PM
Wind SSE 11 mph18 km/h
Dew Point 60°F16°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 17% *
Humidity 68%
Wed, 9th
Brookhaven IL Weather - Wednesday, Sep 9, 2026 - Sunny
Hi: 84°F 29°C
Lo: 70°F 21°C
Sunrise 06:27 AM
Sunset 07:13 PM
Wind NW 13 mph22 km/h
Dew Point 66°F19°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 7% *
Humidity 61%
Thu, 10th
Brookhaven IL Weather - Thursday, Sep 10, 2026 - Light Rain Shower
Hi: 76°F 24°C
Lo: 68°F 20°C
Sunrise 06:28 AM
Sunset 07:11 PM
Wind W 4 mph6 km/h
Dew Point 65°F19°C
uv Index 5
Barometric Pressure 30 in1016 mb
POP 47% *
Humidity 78%
Fri, 11th
Brookhaven IL Weather - Friday, Sep 11, 2026 - Sunny
Hi: 77°F 25°C
Lo: 63°F 17°C
Sunrise 06:29 AM
Sunset 07:10 PM
Wind E 15 mph24 km/h
Dew Point 55°F13°C
uv Index 6
Barometric Pressure 29.97 in1015 mb
POP 4% *
Humidity 59%
Sat, 12th
Brookhaven IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 86°F 30°C
Lo: 64°F 18°C
Sunrise 06:30 AM
Sunset 07:08 PM
Wind SSE 11 mph17 km/h
Dew Point 64°F18°C
uv Index 6
Barometric Pressure 29.91 in1013 mb
POP 4% *
Humidity 63%
Sun, 13th
Brookhaven IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 88°F 31°C
Lo: 74°F 23°C
Sunrise 06:31 AM
Sunset 07:06 PM
Wind SW 13 mph21 km/h
Dew Point 68°F20°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 3% *
Humidity 56%
Mon, 14th
Brookhaven IL Weather - Monday, Sep 14, 2026 - Overcast
Hi: 77°F 25°C
Lo: 66°F 19°C
Sunrise 06:32 AM
Sunset 07:04 PM
Wind SSW 12 mph19 km/h
Dew Point 69°F21°C
uv Index 5
Barometric Pressure 29.88 in1012 mb
POP 25% *
Humidity 83%
Tue, 15th
Brookhaven IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 67°F 19°C
Lo: 55°F 13°C
Sunrise 06:33 AM
Sunset 07:02 PM
Wind W 18 mph29 km/h
Dew Point 48°F9°C
uv Index 5
Barometric Pressure 29.74 in1007 mb
POP 3% *
Humidity 55%
Wed, 16th
Brookhaven IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 62°F 17°C
Lo: 50°F 10°C
Sunrise 06:34 AM
Sunset 07:01 PM
Wind NNW 10 mph16 km/h
Dew Point 46°F8°C
uv Index 5
Barometric Pressure 30.06 in1018 mb
POP 4% *
Humidity 59%
* POP = Probability of Precipitation. Data for 12:00 PM.