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Union IL Weather - Partly Cloudy - 76°F
Partly Cloudy
76°F
Updated 3:32 am
Feels Like 78°F
Humidity 97%
Wind N 0 mph
Barometer  29.93 in
Dew Point 75°F
Union IL Weather - Partly Cloudy - 24°C
Partly Cloudy
24°C
Updated 3:32 am
Feels Like 26°C
Humidity 97%
Wind N 0 km/h
Barometer  101.4 kPa
Dew Point 24°C
Union, IL Weather and Current Conditionsunion il weather forecast

Union, IL Weather Forecast

Union Illinois WeatherUnion, Illinois Weather Weather Forecast
14 day API Union, IL weather forecast. Note. Our 7-day weather forecast for Union, 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.
Union, IL Weather Forecast Dated: 332 AM Sat Sep 05 2026
Expect a mild stretch 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.

Saturday, September 5, 2026

Mid-Morning
Union Weather - 2026-09-05 - Morning - Scattered Showers
78°F 26°C
Scattered Showers
Mid-Afternoon
Union Weather - 2026-09-05 - Afternoon - Scattered Showers
74°F 23°C
Scattered Showers
Early-Evening
Union Weather - 2026-09-05 - Evening - Partly Cloudy
70°F 21°C
Partly Cloudy
Pleasant near 74°F 23°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds out of the NE at 9 mph 15 km/h. Gusts up to 20 mph 31 km/h.

Sunday, September 6, 2026

Mid-Morning
Union Weather - 2026-09-06 - Morning - Sunny
66°F 19°C
Sunny
Mid-Afternoon
Union Weather - 2026-09-06 - Afternoon - Sunny
73°F 23°C
Sunny
Early-Evening
Union Weather - 2026-09-06 - Evening - Sunny
66°F 19°C
Sunny
Comfortable with temperatures reaching 73°F 23°C, sunny throughout the day, with steady humidity and steady pressure. Winds blowing from the ENE at 12 mph 19 km/h.

Monday, September 7, 2026

Mid-Morning
Union Weather - 2026-09-07 - Morning - Sunny
65°F 19°C
Sunny
Mid-Afternoon
Union Weather - 2026-09-07 - Afternoon - Overcast
74°F 23°C
Overcast
Early-Evening
Union Weather - 2026-09-07 - Evening - Overcast
67°F 20°C
Overcast
Enjoyable around 74°F 23°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the ESE to the E at 9 mph 14 km/h.

Tuesday, September 8, 2026

Mid-Morning
Union Weather - 2026-09-08 - Morning - Sunny
67°F 19°C
Sunny
Mid-Afternoon
Union Weather - 2026-09-08 - Afternoon - Partly Cloudy
79°F 26°C
Partly Cloudy
Early-Evening
Union Weather - 2026-09-08 - Evening - Partly Cloudy
79°F 27°C
Partly Cloudy
Mild temperatures up to 79°F 26°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and barometric pressure falling. Winds swinging from the SSE to the S at 13 mph 21 km/h. Gusts up to 31 mph 49 km/h.

Wednesday, September 9, 2026

Mid-Morning
Union Weather - 2026-09-09 - Morning - Scattered Showers
71°F 22°C
Scattered Showers
Mid-Afternoon
Union Weather - 2026-09-09 - Afternoon - Partly Cloudy
83°F 29°C
Partly Cloudy
Early-Evening
Union Weather - 2026-09-09 - Evening - Overcast
76°F 24°C
Overcast
Very warm with a high of 83°F 29°C, scattered downpours possible, with lower humidity and steady pressure. Winds shifting from the NW to the W at 11 mph 16 km/h. Gusts up to 24 mph 40 km/h.

Thursday, September 10, 2026

Mid-Morning
Union Weather - 2026-09-10 - Morning - Overcast
61°F 16°C
Overcast
Mid-Afternoon
Union Weather - 2026-09-10 - Afternoon - Sunny
71°F 22°C
Sunny
Early-Evening
Union Weather - 2026-09-10 - Evening - Overcast
66°F 19°C
Overcast
Pleasant near 71°F 22°C, overcast in the morning, cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure. Winds turning from the N to the ENE at 7 mph 11 km/h.

Friday, September 11, 2026

Mid-Morning
Union Weather - 2026-09-11 - Morning - Overcast
59°F 15°C
Overcast
Mid-Afternoon
Union Weather - 2026-09-11 - Afternoon - Cloudy
66°F 19°C
Cloudy
Early-Evening
Union Weather - 2026-09-11 - Evening - Overcast
61°F 16°C
Overcast
Comfortable at 66°F 19°C, overcast throughout the day, with lower humidity and barometric pressure falling. Winds switching from the ESE to the ENE at 11 mph 17 km/h.

Saturday, September 12, 2026

Mid-Morning
Union Weather - 2026-09-12 - Morning - Overcast
61°F 16°C
Overcast
Mid-Afternoon
Union Weather - 2026-09-12 - Afternoon - Sunny
69°F 21°C
Sunny
Early-Evening
Union Weather - 2026-09-12 - Evening - Sunny
64°F 18°C
Sunny
Enjoyable around 69°F 21°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds blowing from the E at 14 mph 22 km/h.

Sunday, September 13, 2026

Mid-Morning
Union Weather - 2026-09-13 - Morning - Sunny
61°F 16°C
Sunny
Mid-Afternoon
Union Weather - 2026-09-13 - Afternoon - Sunny
74°F 24°C
Sunny
Early-Evening
Union Weather - 2026-09-13 - Evening - Sunny
70°F 21°C
Sunny
Mild temperatures up to 74°F 24°C, sunny throughout the day, with steady humidity and steady pressure. Winds SSE at 12 mph 19 km/h.

Monday, September 14, 2026

Mid-Morning
Union Weather - 2026-09-14 - Morning - Overcast
69°F 21°C
Overcast
Mid-Afternoon
Union Weather - 2026-09-14 - Afternoon - Sunny
83°F 28°C
Sunny
Early-Evening
Union Weather - 2026-09-14 - Evening - Sunny
81°F 27°C
Sunny
Very warm with a high of 83°F 28°C, overcast in the morning, sunny in the afternoon, and cloudy this evening, with increasing humidity and steady pressure. Winds shifting from the S to the SSW at 7 mph 11 km/h.

Tuesday, September 15, 2026

Mid-Morning
Union Weather - 2026-09-15 - Morning - Sunny
78°F 26°C
Sunny
Mid-Afternoon
Union Weather - 2026-09-15 - Afternoon - Scattered Showers
88°F 31°C
Scattered Showers
Early-Evening
Union Weather - 2026-09-15 - Evening - Sunny
80°F 27°C
Sunny
Quite warm reaching 88°F 31°C, feeling like 92°F 34°C during peak afternoon, scattered downpours possible, with steady humidity and steady pressure. Winds turning from the ESE to the E at 8 mph 13 km/h.

Wednesday, September 16, 2026

Mid-Morning
Union Weather - 2026-09-16 - Morning - Overcast
78°F 26°C
Overcast
Mid-Afternoon
Union Weather - 2026-09-16 - Afternoon - Cloudy
90°F 32°C
Cloudy
Early-Evening
Union Weather - 2026-09-16 - Evening - Nearby Thunderstorms
83°F 28°C
Nearby Thunderstorms
Very hot with a high of 90°F 32°C, feeling closer to 93°F 34°C in the humidity, heavy thunderstorms conditions at times, with steady humidity and steady pressure.

Thursday, September 17, 2026

Mid-Morning
Union Weather - 2026-09-17 - Morning - Fog
66°F 19°C
Fog
Mid-Afternoon
Union Weather - 2026-09-17 - Afternoon - Scattered Showers
77°F 25°C
Scattered Showers
Early-Evening
Union Weather - 2026-09-17 - Evening - Overcast
74°F 23°C
Overcast
Enjoyable around 77°F 25°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure falling.

Friday, September 18, 2026

Mid-Morning
Union Weather - 2026-09-18 - Morning - Overcast
64°F 18°C
Overcast
Mid-Afternoon
Union Weather - 2026-09-18 - Afternoon - Overcast
68°F 20°C
Overcast
Early-Evening
Union Weather - 2026-09-18 - Evening - Overcast
63°F 17°C
Overcast
Mild temperatures up to 68°F 20°C, overcast through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds ENE at 12 mph 19 km/h.

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Weather by the Numbers

Sat, 5th
Union IL Weather - Saturday, Sep 5, 2026 - Patchy Rain Nearby
Hi: 82°F 28°C
Lo: 65°F 19°C
Sunrise 06:24 AM
Sunset 07:21 PM
Wind NE 11 mph17 km/h
Dew Point 70°F21°C
uv Index 4
Barometric Pressure 29.94 in1014 mb
POP 16% *
Humidity 79%
Sun, 6th
Union IL Weather - Sunday, Sep 6, 2026 - Cloudy
Hi: 74°F 23°C
Lo: 62°F 16°C
Sunrise 06:25 AM
Sunset 07:20 PM
Wind ENE 11 mph18 km/h
Dew Point 55°F13°C
uv Index 7
Barometric Pressure 30.12 in1020 mb
POP 7% *
Humidity 55%
Mon, 7th
Union IL Weather - Monday, Sep 7, 2026 - Cloudy
Hi: 74°F 23°C
Lo: 61°F 16°C
Sunrise 06:26 AM
Sunset 07:18 PM
Wind ESE 9 mph15 km/h
Dew Point 56°F13°C
uv Index 7
Barometric Pressure 30.15 in1021 mb
POP 8% *
Humidity 55%
Tue, 8th
Union IL Weather - Tuesday, Sep 8, 2026 - Cloudy
Hi: 81°F 27°C
Lo: 62°F 17°C
Sunrise 06:27 AM
Sunset 07:16 PM
Wind SSW 9 mph15 km/h
Dew Point 62°F17°C
uv Index 7
Barometric Pressure 30.09 in1019 mb
POP 10% *
Humidity 62%
Wed, 9th
Union IL Weather - Wednesday, Sep 9, 2026 - Partly Cloudy
Hi: 84°F 29°C
Lo: 69°F 20°C
Sunrise 06:28 AM
Sunset 07:14 PM
Wind NW 15 mph23 km/h
Dew Point 53°F12°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 2% *
Humidity 40%
Thu, 10th
Union IL Weather - Thursday, Sep 10, 2026 - Overcast
Hi: 72°F 22°C
Lo: 59°F 15°C
Sunrise 06:29 AM
Sunset 07:13 PM
Wind N 9 mph14 km/h
Dew Point 50°F10°C
uv Index 4
Barometric Pressure 30.12 in1020 mb
POP 5% *
Humidity 53%
Fri, 11th
Union IL Weather - Friday, Sep 11, 2026 - Light Rain Shower
Hi: 69°F 20°C
Lo: 58°F 15°C
Sunrise 06:30 AM
Sunset 07:11 PM
Wind ESE 11 mph18 km/h
Dew Point 57°F14°C
uv Index 4
Barometric Pressure 29.97 in1015 mb
POP 46% *
Humidity 89%
Sat, 12th
Union IL Weather - Saturday, Sep 12, 2026 - Overcast
Hi: 71°F 21°C
Lo: 58°F 14°C
Sunrise 06:31 AM
Sunset 07:09 PM
Wind E 14 mph23 km/h
Dew Point 56°F13°C
uv Index 4
Barometric Pressure 30.03 in1017 mb
POP 7% *
Humidity 65%
Sun, 13th
Union IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 75°F 24°C
Lo: 56°F 13°C
Sunrise 06:32 AM
Sunset 07:07 PM
Wind SE 12 mph19 km/h
Dew Point 49°F10°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 2% *
Humidity 48%
Mon, 14th
Union IL Weather - Monday, Sep 14, 2026 - Overcast
Hi: 85°F 29°C
Lo: 65°F 18°C
Sunrise 06:33 AM
Sunset 07:06 PM
Wind S 10 mph17 km/h
Dew Point 60°F16°C
uv Index 5
Barometric Pressure 30.12 in1020 mb
POP 5% *
Humidity 59%
Tue, 15th
Union IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 88°F 31°C
Lo: 74°F 24°C
Sunrise 06:34 AM
Sunset 07:04 PM
Wind SE 7 mph11 km/h
Dew Point 67°F20°C
uv Index 7
Barometric Pressure 30.15 in1021 mb
POP 6% *
Humidity 56%
Wed, 16th
Union IL Weather - Wednesday, Sep 16, 2026 - Overcast
Hi: 90°F 32°C
Lo: 74°F 23°C
Sunrise 06:35 AM
Sunset 07:02 PM
Wind WNW 4 mph6 km/h
Dew Point 66°F19°C
uv Index 7
Barometric Pressure 30.15 in1021 mb
POP 10% *
Humidity 51%
Thu, 17th
Union IL Weather - Thursday, Sep 17, 2026 - Light Rain Shower
Hi: 79°F 26°C
Lo: 66°F 19°C
Sunrise 06:36 AM
Sunset 07:00 PM
Wind ESE 8 mph13 km/h
Dew Point 67°F19°C
uv Index 5
Barometric Pressure 30.09 in1019 mb
POP 38% *
Humidity 88%
Fri, 18th
Union IL Weather - Friday, Sep 18, 2026 - Overcast
Hi: 69°F 20°C
Lo: 61°F 16°C
Sunrise 06:37 AM
Sunset 06:58 PM
Wind ENE 11 mph18 km/h
Dew Point 59°F15°C
uv Index 4
Barometric Pressure 30.09 in1019 mb
POP 20% *
Humidity 74%
* POP = Probability of Precipitation. Data for 12:00 PM.