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Walnut IL Weather - Clear - 77°F
Clear
77°F
Updated 4:15 am
Feels Like 79°F
Humidity 87%
Wind N 0 mph
Barometer  29.92 in
Dew Point 73°F
Walnut IL Weather - Clear - 25°C
Clear
25°C
Updated 4:15 am
Feels Like 26°C
Humidity 87%
Wind N 0 km/h
Barometer  101.3 kPa
Dew Point 23°C
Walnut, IL Weather and Current Conditionswalnut il weather forecast

Walnut, IL Weather Forecast

Walnut Illinois WeatherWalnut, Illinois Weather Weather Forecast
14 day API weather forecast for Walnut, Illinois. Note: The 7-day weather forecast for Walnut, 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.
Walnut, IL Weather Forecast Dated: 415 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
Walnut Weather - 2026-09-04 - Morning - Sunny
83°F 29°C
Sunny
Mid-Afternoon
Walnut Weather - 2026-09-04 - Afternoon - Sunny
90°F 32°C
Sunny
Early-Evening
Walnut Weather - 2026-09-04 - Evening - Sunny
88°F 31°C
Sunny
Sizzling hot near 90°F 32°C with a heat index reaching 100°F 38°C, sunny throughout the day, with steady humidity and steady pressure. Winds turning from the NNW to the SSE at 7 mph 12 km/h.

Saturday, September 5, 2026

Mid-Morning
Walnut Weather - 2026-09-05 - Morning - Scattered Showers
78°F 25°C
Scattered Showers
Mid-Afternoon
Walnut Weather - 2026-09-05 - Afternoon - Sunny
87°F 31°C
Sunny
Early-Evening
Walnut Weather - 2026-09-05 - Evening - Sunny
78°F 26°C
Sunny
Quite warm reaching 87°F 31°C, feeling like 93°F 34°C during peak afternoon, scattered downpours possible, with steady humidity and steady pressure. Winds building from WSW at 3 mph 5 km/h to ENE at 11 mph 17 km/h.

Sunday, September 6, 2026

Mid-Morning
Walnut Weather - 2026-09-06 - Morning - Sunny
68°F 20°C
Sunny
Mid-Afternoon
Walnut Weather - 2026-09-06 - Afternoon - Overcast
77°F 25°C
Overcast
Early-Evening
Walnut Weather - 2026-09-06 - Evening - Overcast
71°F 22°C
Overcast
Enjoyable around 77°F 25°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds moving from the E to the ENE at 10 mph 16 km/h. Gusts up to 20 mph 33 km/h.

Monday, September 7, 2026

Mid-Morning
Walnut Weather - 2026-09-07 - Morning - Cloudy
66°F 19°C
Cloudy
Mid-Afternoon
Walnut Weather - 2026-09-07 - Afternoon - Scattered Showers
72°F 22°C
Scattered Showers
Early-Evening
Walnut Weather - 2026-09-07 - Evening - Overcast
70°F 21°C
Overcast
Mild temperatures up to 72°F 22°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds swinging from the SE to the ESE at 8 mph 13 km/h.

Tuesday, September 8, 2026

Mid-Morning
Walnut Weather - 2026-09-08 - Morning - Partly Cloudy
67°F 20°C
Partly Cloudy
Mid-Afternoon
Walnut Weather - 2026-09-08 - Afternoon - Cloudy
81°F 27°C
Cloudy
Early-Evening
Walnut Weather - 2026-09-08 - Evening - Partly Cloudy
81°F 28°C
Partly Cloudy
Very warm with a high of 81°F 27°C, partly cloudy in the morning, becoming cloudy through the afternoon and evening, with lower humidity and barometric pressure falling. Winds shifting from the SE to the SSE at 14 mph 22 km/h. Gusts up to 32 mph 51 km/h.

Wednesday, September 9, 2026

Mid-Morning
Walnut Weather - 2026-09-09 - Morning - Cloudy
82°F 28°C
Cloudy
Mid-Afternoon
Walnut Weather - 2026-09-09 - Afternoon - Sunny
92°F 33°C
Sunny
Early-Evening
Walnut Weather - 2026-09-09 - Evening - Sunny
88°F 31°C
Sunny
Very hot with a high of 92°F 33°C, feeling closer to 98°F 37°C in the humidity, cloudy in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds turning from the WSW to the S at 8 mph 12 km/h.

Thursday, September 10, 2026

Mid-Morning
Walnut Weather - 2026-09-10 - Morning - Cloudy
79°F 26°C
Cloudy
Mid-Afternoon
Walnut Weather - 2026-09-10 - Afternoon - Sunny
87°F 31°C
Sunny
Early-Evening
Walnut Weather - 2026-09-10 - Evening - Sunny
80°F 27°C
Sunny
Warm and summery around 87°F 31°C (feels like 94°F 34°C), partly cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds switching from the S to the ENE at 12 mph 19 km/h. Gusts up to 23 mph 37 km/h.

Friday, September 11, 2026

Mid-Morning
Walnut Weather - 2026-09-11 - Morning - Overcast
78°F 26°C
Overcast
Mid-Afternoon
Walnut Weather - 2026-09-11 - Afternoon - Sunny
91°F 33°C
Sunny
Early-Evening
Walnut Weather - 2026-09-11 - Evening - Sunny
88°F 32°C
Sunny
Hot and sweltering around 91°F 33°C (heat index 98°F 37°C), partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with lower humidity and barometric pressure falling. Winds moving from the SSE to the SE at 10 mph 15 km/h.

Saturday, September 12, 2026

Mid-Morning
Walnut Weather - 2026-09-12 - Morning - Sunny
81°F 27°C
Sunny
Mid-Afternoon
Walnut Weather - 2026-09-12 - Afternoon - Sunny
91°F 33°C
Sunny
Early-Evening
Walnut Weather - 2026-09-12 - Evening - Sunny
83°F 29°C
Sunny
Very hot with a high of 91°F 33°C, feeling closer to 95°F 35°C in the humidity, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds swinging from the SSW to the S at 6 mph 9 km/h.

Sunday, September 13, 2026

Mid-Morning
Walnut Weather - 2026-09-13 - Morning - Sunny
76°F 25°C
Sunny
Mid-Afternoon
Walnut Weather - 2026-09-13 - Afternoon - Sunny
89°F 32°C
Sunny
Early-Evening
Walnut Weather - 2026-09-13 - Evening - Cloudy
73°F 23°C
Cloudy
Warm and summery around 89°F 32°C (feels like 94°F 35°C), cloudy in the morning, partly cloudy in the afternoon, and overcast this evening, with increasing humidity and steady pressure. Winds shifting from the S to the SW at 16 mph 25 km/h. Gusts up to 34 mph 55 km/h.

Monday, September 14, 2026

Mid-Morning
Walnut Weather - 2026-09-14 - Morning - Sunny
62°F 17°C
Sunny
Mid-Afternoon
Walnut Weather - 2026-09-14 - Afternoon - Sunny
74°F 23°C
Sunny
Early-Evening
Walnut Weather - 2026-09-14 - Evening - Sunny
69°F 21°C
Sunny
Pleasant near 74°F 23°C, sunny throughout the day, with lower humidity and steady pressure.

Tuesday, September 15, 2026

Mid-Morning
Walnut Weather - 2026-09-15 - Morning - Sunny
68°F 20°C
Sunny
Mid-Afternoon
Walnut Weather - 2026-09-15 - Afternoon - Partly Cloudy
85°F 30°C
Partly Cloudy
Early-Evening
Walnut Weather - 2026-09-15 - Evening - Scattered Showers
83°F 28°C
Scattered Showers
Very warm near 85°F 30°C, though humidity makes it feel like 89°F 32°C, locally heavy downpours at times, with steady humidity and barometric pressure falling. Winds turning from the SSE to the S at 13 mph 20 km/h. Gusts up to 30 mph 48 km/h.

Wednesday, September 16, 2026

Mid-Morning
Walnut Weather - 2026-09-16 - Morning - Overcast
79°F 26°C
Overcast
Mid-Afternoon
Walnut Weather - 2026-09-16 - Afternoon - Scattered Showers
92°F 33°C
Scattered Showers
Early-Evening
Walnut Weather - 2026-09-16 - Evening - Sunny
89°F 32°C
Sunny
Sizzling hot near 92°F 33°C with a heat index reaching 96°F 36°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds SSW at 17 mph 27 km/h. Gusts up to 24 mph 37 km/h.

Thursday, September 17, 2026

Mid-Morning
Walnut Weather - 2026-09-17 - Morning - Partly Cloudy
75°F 24°C
Partly Cloudy
Mid-Afternoon
Walnut Weather - 2026-09-17 - Afternoon - Overcast
76°F 25°C
Overcast
Early-Evening
Walnut Weather - 2026-09-17 - Evening - Scattered Showers
68°F 21°C
Scattered Showers
Mild temperatures up to 76°F 25°C, scattered downpours possible, with steady humidity and steady pressure. Winds moving from the SW to the NNW at 9 mph 14 km/h.

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Weather by the Numbers

Fri, 4th
Walnut IL Weather - Friday, Sep 4, 2026 - Sunny
Hi: 94°F 34°C
Lo: 76°F 25°C
Sunrise 06:27 AM
Sunset 07:26 PM
Wind WSW 9 mph14 km/h
Dew Point 69°F21°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 3% *
Humidity 60%
Sat, 5th
Walnut IL Weather - Saturday, Sep 5, 2026 - Sunny
Hi: 87°F 31°C
Lo: 71°F 21°C
Sunrise 06:28 AM
Sunset 07:25 PM
Wind NNE 5 mph9 km/h
Dew Point 70°F21°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 3% *
Humidity 61%
Sun, 6th
Walnut IL Weather - Sunday, Sep 6, 2026 - Cloudy
Hi: 77°F 25°C
Lo: 65°F 18°C
Sunrise 06:29 AM
Sunset 07:23 PM
Wind E 11 mph18 km/h
Dew Point 60°F16°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 12% *
Humidity 62%
Mon, 7th
Walnut IL Weather - Monday, Sep 7, 2026 - Cloudy
Hi: 72°F 22°C
Lo: 63°F 17°C
Sunrise 06:30 AM
Sunset 07:21 PM
Wind ESE 10 mph15 km/h
Dew Point 59°F15°C
uv Index 5
Barometric Pressure 30.12 in1020 mb
POP 13% *
Humidity 67%
Tue, 8th
Walnut IL Weather - Tuesday, Sep 8, 2026 - Overcast
Hi: 84°F 29°C
Lo: 63°F 17°C
Sunrise 06:31 AM
Sunset 07:20 PM
Wind SSE 11 mph18 km/h
Dew Point 63°F17°C
uv Index 6
Barometric Pressure 30.06 in1018 mb
POP 14% *
Humidity 59%
Wed, 9th
Walnut IL Weather - Wednesday, Sep 9, 2026 - Partly Cloudy
Hi: 93°F 34°C
Lo: 82°F 28°C
Sunrise 06:32 AM
Sunset 07:18 PM
Wind WSW 8 mph13 km/h
Dew Point 65°F18°C
uv Index 8
Barometric Pressure 29.97 in1015 mb
POP 2% *
Humidity 49%
Thu, 10th
Walnut IL Weather - Thursday, Sep 10, 2026 - Sunny
Hi: 88°F 31°C
Lo: 71°F 22°C
Sunrise 06:33 AM
Sunset 07:16 PM
Wind ESE 14 mph22 km/h
Dew Point 70°F21°C
uv Index 7
Barometric Pressure 30 in1016 mb
POP 4% *
Humidity 65%
Fri, 11th
Walnut IL Weather - Friday, Sep 11, 2026 - Sunny
Hi: 92°F 33°C
Lo: 70°F 21°C
Sunrise 06:34 AM
Sunset 07:14 PM
Wind SSW 9 mph14 km/h
Dew Point 69°F20°C
uv Index 8
Barometric Pressure 29.88 in1012 mb
POP 2% *
Humidity 55%
Sat, 12th
Walnut IL Weather - Saturday, Sep 12, 2026 - Sunny
Hi: 92°F 33°C
Lo: 78°F 25°C
Sunrise 06:35 AM
Sunset 07:13 PM
Wind SW 13 mph21 km/h
Dew Point 66°F19°C
uv Index 8
Barometric Pressure 29.88 in1012 mb
POP 2% *
Humidity 50%
Sun, 13th
Walnut IL Weather - Sunday, Sep 13, 2026 - Patchy Rain Nearby
Hi: 90°F 32°C
Lo: 67°F 19°C
Sunrise 06:36 AM
Sunset 07:11 PM
Wind SSW 16 mph26 km/h
Dew Point 67°F20°C
uv Index 6
Barometric Pressure 29.8 in1009 mb
POP 17% *
Humidity 57%
Mon, 14th
Walnut IL Weather - Monday, Sep 14, 2026 - Sunny
Hi: 75°F 24°C
Lo: 57°F 14°C
Sunrise 06:37 AM
Sunset 07:09 PM
Wind WNW 5 mph8 km/h
Dew Point 50°F10°C
uv Index 6
Barometric Pressure 30.09 in1019 mb
POP 2% *
Humidity 49%
Tue, 15th
Walnut IL Weather - Tuesday, Sep 15, 2026 - Cloudy
Hi: 86°F 30°C
Lo: 61°F 16°C
Sunrise 06:38 AM
Sunset 07:08 PM
Wind SSW 18 mph29 km/h
Dew Point 66°F19°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 10% *
Humidity 64%
Wed, 16th
Walnut IL Weather - Wednesday, Sep 16, 2026 - Patchy Rain Nearby
Hi: 92°F 34°C
Lo: 74°F 24°C
Sunrise 06:40 AM
Sunset 07:06 PM
Wind SSW 17 mph27 km/h
Dew Point 68°F20°C
uv Index 7
Barometric Pressure 29.97 in1015 mb
POP 9% *
Humidity 53%
Thu, 17th
Walnut IL Weather - Thursday, Sep 17, 2026 - Patchy Rain Nearby
Hi: 80°F 27°C
Lo: 64°F 18°C
Sunrise 06:41 AM
Sunset 07:04 PM
Wind W 11 mph18 km/h
Dew Point 68°F20°C
uv Index 6
Barometric Pressure 30.09 in1019 mb
POP 17% *
Humidity 71%
* POP = Probability of Precipitation. Data for 12:00 PM.