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Posey IL Weather - Partly Cloudy - 99°F
Partly Cloudy
99°F
Updated 1:33 pm
Feels Like 114°F
Humidity 36%
Wind W 6 mph
Barometer  30.01 in
Dew Point 68°F
Posey IL Weather - Partly Cloudy - 37°C
Partly Cloudy
37°C
Updated 1:33 pm
Feels Like 45°C
Humidity 36%
Wind W 10 km/h
Barometer  101.6 kPa
Dew Point 20°C
Posey, IL Weather and Current Conditionsposey il weather forecast

Posey, IL Weather Forecast

Posey Illinois WeatherPosey, Illinois Weather Weather Forecast
14 day API Posey, IL weather forecast. Note. Our 7-day weather forecast for Posey, Illinois is our most reliable and accurate forecast. This model should only be used as a likely scenario. Forecasting more than 7 days is difficult.
Posey, IL Weather Forecast Dated: 133 PM Fri Sep 04 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.

Friday, September 4, 2026

Mid-Morning
Posey Weather - 2026-09-04 - Morning - Sunny
86°F 30°C
Sunny
Mid-Afternoon
Posey Weather - 2026-09-04 - Afternoon - Sunny
102°F 39°C
Sunny
Early-Evening
Posey Weather - 2026-09-04 - Evening - Sunny
95°F 35°C
Sunny
Scorching heat reaching 102°F 39°C, feeling like 112°F 45°C, sunny through the afternoon, turning partly cloudy this evening, with lower humidity and steady pressure. Winds turning from the WSW to the SW at 10 mph 15 km/h.

Saturday, September 5, 2026

Mid-Morning
Posey Weather - 2026-09-05 - Morning - Cloudy
88°F 31°C
Cloudy
Mid-Afternoon
Posey Weather - 2026-09-05 - Afternoon - Partly Cloudy
104°F 40°C
Partly Cloudy
Early-Evening
Posey Weather - 2026-09-05 - Evening - Scattered Showers
77°F 25°C
Scattered Showers
Sweltering heat reaching 104°F 40°C, scattered downpours possible, with increasing humidity and steady pressure. Winds switching from the W to the ESE at 15 mph 24 km/h. Gusts up to 23 mph 37 km/h.

Sunday, September 6, 2026

Mid-Morning
Posey Weather - 2026-09-06 - Morning - Sunny
75°F 24°C
Sunny
Mid-Afternoon
Posey Weather - 2026-09-06 - Afternoon - Sunny
90°F 32°C
Sunny
Early-Evening
Posey Weather - 2026-09-06 - Evening - Sunny
80°F 27°C
Sunny
Very hot with a high of 90°F 32°C, feeling closer to 94°F 34°C in the humidity, sunny throughout the day, with lower humidity and steady pressure. Winds NE at 12 mph 19 km/h. Gusts up to 23 mph 37 km/h.

Monday, September 7, 2026

Mid-Morning
Posey Weather - 2026-09-07 - Morning - Sunny
70°F 21°C
Sunny
Mid-Afternoon
Posey Weather - 2026-09-07 - Afternoon - Sunny
89°F 32°C
Sunny
Early-Evening
Posey Weather - 2026-09-07 - Evening - Sunny
81°F 27°C
Sunny
Warm temperatures up to 89°F 32°C, sunny throughout the day, with lower humidity and steady pressure. Winds swinging from the E to the ENE at 8 mph 14 km/h.

Tuesday, September 8, 2026

Mid-Morning
Posey Weather - 2026-09-08 - Morning - Sunny
78°F 26°C
Sunny
Mid-Afternoon
Posey Weather - 2026-09-08 - Afternoon - Sunny
98°F 37°C
Sunny
Early-Evening
Posey Weather - 2026-09-08 - Evening - Sunny
92°F 34°C
Sunny
Very hot with a high of 98°F 37°C, sunny throughout the day, with lower humidity and steady pressure. Winds blowing from the SSW at 9 mph 15 km/h.

Wednesday, September 9, 2026

Mid-Morning
Posey Weather - 2026-09-09 - Morning - Scattered Showers
82°F 28°C
Scattered Showers
Mid-Afternoon
Posey Weather - 2026-09-09 - Afternoon - Partly Cloudy
99°F 37°C
Partly Cloudy
Early-Evening
Posey Weather - 2026-09-09 - Evening - Sunny
90°F 32°C
Sunny
Very hot with temperatures reaching 99°F 37°C, locally heavy downpours at times, with lower humidity and steady pressure. Winds turning from the SSW to the SE at 10 mph 16 km/h.

Thursday, September 10, 2026

Mid-Morning
Posey Weather - 2026-09-10 - Morning - Cloudy
75°F 24°C
Cloudy
Mid-Afternoon
Posey Weather - 2026-09-10 - Afternoon - Overcast
92°F 33°C
Overcast
Early-Evening
Posey Weather - 2026-09-10 - Evening - Overcast
84°F 29°C
Overcast
Hot and sweltering around 92°F 33°C, cloudy in the morning, becoming overcast through the afternoon and evening, with lower humidity and barometric pressure falling. Winds switching from the NE to the ENE at 9 mph 15 km/h.

Friday, September 11, 2026

Mid-Morning
Posey Weather - 2026-09-11 - Morning - Light Showers
64°F 18°C
Light Showers
Mid-Afternoon
Posey Weather - 2026-09-11 - Afternoon - Scattered Showers
70°F 21°C
Scattered Showers
Early-Evening
Posey Weather - 2026-09-11 - Evening - Overcast
66°F 19°C
Overcast
Enjoyable around 70°F 21°C, scattered downpours possible, with steady humidity and steady pressure. Winds moving from the E to the ENE at 13 mph 20 km/h.

Saturday, September 12, 2026

Mid-Morning
Posey Weather - 2026-09-12 - Morning - Light Showers
67°F 19°C
Light Showers
Mid-Afternoon
Posey Weather - 2026-09-12 - Afternoon - Light Showers
79°F 26°C
Light Showers
Early-Evening
Posey Weather - 2026-09-12 - Evening - Partly Cloudy
76°F 25°C
Partly Cloudy
Mild temperatures up to 79°F 26°C, showers through the afternoon, tapering off by evening, with lower humidity and steady pressure. Winds swinging from the SE to the E at 7 mph 12 km/h.

Sunday, September 13, 2026

Mid-Morning
Posey Weather - 2026-09-13 - Morning - Light Fog
76°F 24°C
Light Fog
Mid-Afternoon
Posey Weather - 2026-09-13 - Afternoon - Sunny
87°F 31°C
Sunny
Early-Evening
Posey Weather - 2026-09-13 - Evening - Overcast
77°F 25°C
Overcast
Warm and summery around 87°F 31°C (feels like 92°F 33°C), sunny in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure. Winds picking up from E at 3 mph 5 km/h to SE at 13 mph 20 km/h. Gusts up to 23 mph 36 km/h.

Monday, September 14, 2026

Mid-Morning
Posey Weather - 2026-09-14 - Morning - Cloudy
63°F 17°C
Cloudy
Mid-Afternoon
Posey Weather - 2026-09-14 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
Posey Weather - 2026-09-14 - Evening - Sunny
66°F 19°C
Sunny
Pleasant near 73°F 23°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds turning from the NE to the ENE at 8 mph 13 km/h.

Tuesday, September 15, 2026

Mid-Morning
Posey Weather - 2026-09-15 - Morning - Sunny
61°F 16°C
Sunny
Mid-Afternoon
Posey Weather - 2026-09-15 - Afternoon - Sunny
79°F 26°C
Sunny
Early-Evening
Posey Weather - 2026-09-15 - Evening - Overcast
77°F 25°C
Overcast
Comfortable with temperatures reaching 79°F 26°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and barometric pressure falling. Winds SSE at 9 mph 14 km/h. Gusts up to 24 mph 38 km/h.

Wednesday, September 16, 2026

Mid-Morning
Posey Weather - 2026-09-16 - Morning - Light Showers
83°F 28°C
Light Showers
Mid-Afternoon
Posey Weather - 2026-09-16 - Afternoon - Sunny
100°F 38°C
Sunny
Early-Evening
Posey Weather - 2026-09-16 - Evening - Sunny
94°F 34°C
Sunny
Scorching hot near 100°F 38°C, early showers breaking for a drier afternoon, with lower humidity and steady pressure. Winds moving from the SSW to the S at 10 mph 16 km/h.

Thursday, September 17, 2026

Mid-Morning
Posey Weather - 2026-09-17 - Morning - Sunny
86°F 30°C
Sunny
Mid-Afternoon
Posey Weather - 2026-09-17 - Afternoon - Overcast
93°F 34°C
Overcast
Early-Evening
Posey Weather - 2026-09-17 - Evening - Scattered Showers
81°F 28°C
Scattered Showers
Hot and sweltering around 93°F 34°C (heat index 98°F 36°C), scattered downpours possible, with increasing humidity and steady pressure. Winds swinging from the SSW to the NNW at 8 mph 12 km/h.

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Weather by the Numbers

Fri, 4th
Posey IL Weather - Friday, Sep 4, 2026 - Sunny
Hi: 103°F 39°C
Lo: 76°F 25°C
Sunrise 06:29 AM
Sunset 07:23 PM
Wind WSW 8 mph13 km/h
Dew Point 74°F23°C
uv Index 8
Barometric Pressure 29.97 in1015 mb
POP 1% *
Humidity 44%
Sat, 5th
Posey IL Weather - Saturday, Sep 5, 2026 - Overcast
Hi: 104°F 40°C
Lo: 74°F 23°C
Sunrise 06:30 AM
Sunset 07:21 PM
Wind WSW 4 mph7 km/h
Dew Point 64°F18°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 10% *
Humidity 39%
Sun, 6th
Posey IL Weather - Sunday, Sep 6, 2026 - Sunny
Hi: 90°F 32°C
Lo: 70°F 21°C
Sunrise 06:31 AM
Sunset 07:20 PM
Wind ENE 12 mph19 km/h
Dew Point 69°F20°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 3% *
Humidity 57%
Mon, 7th
Posey IL Weather - Monday, Sep 7, 2026 - Sunny
Hi: 89°F 32°C
Lo: 62°F 16°C
Sunrise 06:32 AM
Sunset 07:18 PM
Wind ENE 8 mph13 km/h
Dew Point 49°F10°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 31%
Tue, 8th
Posey IL Weather - Tuesday, Sep 8, 2026 - Sunny
Hi: 99°F 37°C
Lo: 69°F 21°C
Sunrise 06:33 AM
Sunset 07:17 PM
Wind SSW 11 mph18 km/h
Dew Point 59°F15°C
uv Index 8
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 33%
Wed, 9th
Posey IL Weather - Wednesday, Sep 9, 2026 - Partly Cloudy
Hi: 103°F 40°C
Lo: 77°F 25°C
Sunrise 06:34 AM
Sunset 07:15 PM
Wind SW 10 mph16 km/h
Dew Point 64°F18°C
uv Index 8
Barometric Pressure 30.06 in1018 mb
POP 4% *
Humidity 45%
Thu, 10th
Posey IL Weather - Thursday, Sep 10, 2026 - Partly Cloudy
Hi: 93°F 34°C
Lo: 68°F 20°C
Sunrise 06:34 AM
Sunset 07:14 PM
Wind NNE 8 mph13 km/h
Dew Point 45°F7°C
uv Index 8
Barometric Pressure 30.12 in1020 mb
POP 7% *
Humidity 25%
Fri, 11th
Posey IL Weather - Friday, Sep 11, 2026 - Light Rain Shower
Hi: 71°F 22°C
Lo: 64°F 18°C
Sunrise 06:35 AM
Sunset 07:12 PM
Wind ESE 13 mph21 km/h
Dew Point 61°F16°C
uv Index 4
Barometric Pressure 29.97 in1015 mb
POP 39% *
Humidity 81%
Sat, 12th
Posey IL Weather - Saturday, Sep 12, 2026 - Patchy Rain Nearby
Hi: 81°F 27°C
Lo: 64°F 18°C
Sunrise 06:36 AM
Sunset 07:10 PM
Wind SE 8 mph13 km/h
Dew Point 66°F19°C
uv Index 5
Barometric Pressure 29.94 in1014 mb
POP 39% *
Humidity 80%
Sun, 13th
Posey IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 88°F 31°C
Lo: 68°F 20°C
Sunrise 06:37 AM
Sunset 07:09 PM
Wind W 5 mph8 km/h
Dew Point 70°F21°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 4% *
Humidity 64%
Mon, 14th
Posey IL Weather - Monday, Sep 14, 2026 - Partly Cloudy
Hi: 73°F 23°C
Lo: 59°F 15°C
Sunrise 06:38 AM
Sunset 07:07 PM
Wind NE 11 mph18 km/h
Dew Point 47°F8°C
uv Index 6
Barometric Pressure 30.21 in1023 mb
POP 2% *
Humidity 46%
Tue, 15th
Posey IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 81°F 27°C
Lo: 54°F 12°C
Sunrise 06:39 AM
Sunset 07:06 PM
Wind SE 8 mph13 km/h
Dew Point 45°F7°C
uv Index 6
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 37%
Wed, 16th
Posey IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 100°F 38°C
Lo: 61°F 16°C
Sunrise 06:40 AM
Sunset 07:04 PM
Wind SSW 16 mph26 km/h
Dew Point 61°F16°C
uv Index 9
Barometric Pressure 30.03 in1017 mb
POP 1% *
Humidity 32%
Thu, 17th
Posey IL Weather - Thursday, Sep 17, 2026 - Sunny
Hi: 100°F 38°C
Lo: 72°F 22°C
Sunrise 06:41 AM
Sunset 07:02 PM
Wind SW 10 mph16 km/h
Dew Point 64°F18°C
uv Index 9
Barometric Pressure 30.09 in1019 mb
POP 5% *
Humidity 35%
* POP = Probability of Precipitation. Data for 12:00 PM.