Union, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Overcast 75°F 24°C Heat Index: 75°F	Observed at: Union, IL	Elevation: 935 ft | 285 m
	Last Updated: July 27, 7:15 PM Timezone: GMT -5/-4
	Sky Conditions: Overcast	Temperature: 75°F | 24°C
	Pressure: 29.03 in | 983.1 mb	Dewpoint: 73°F | 23°C
	Humidity: 92%	Wind: SSE 15 mph | SSE 24 kph
	Feels Like: 79°F | 26°C	Visibility: 25.5 mi | 41 km
	Lat/Long: 41.4969 | -88.0233	Sunrise: 5:42 AM   Sunset: 8:14 PM

7 Day Graphical Forecast

Valid: 12:57 PM 7/28/2026

Today Rain 86 |73 °F 30 |23 °C 27% Chance Precipitation Tuesday Overcast 80 |66 °F 27 |19 °C 1% Chance Precipitation Wednesday Overcast 85 |60 °F 29 |16 °C 1% Chance Precipitation Thursday Overcast 84 |66 °F 29 |19 °C 10% Chance Precipitation Friday Light Showers 72 |64 °F 22 |18 °C 39% Chance Precipitation Saturday Overcast 84 |63 °F 29 |17 °C 43% Chance Precipitation Sunday Clear 84 |65 °F 29 |18 °C 17% Chance Precipitation

7 Hour Graphical Forecast

Valid: 12:57 PM 7/28/2026

12 PM Clear 78 °F 0% Chance Precipitation

1 PM Clear 79 °F 0% Chance Precipitation

2 PM Clear 80 °F 0% Chance Precipitation

3 PM Clear 79 °F 0% Chance Precipitation

4 PM Clear 79 °F 0% Chance Precipitation

5 PM Mostly Clear 78 °F 0% Chance Precipitation

6 PM Clear 76 °F 0% Chance Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index

7 Day & Night Weather Forecast for Union, IL - (Fahrenheit & Celsius) Valid: 12:57 PM 7/28/2026 Today Rain with a high near 86°F [30°C]. S wind to around 20 mph [32 kph], with gusts to near 39 mph [62 kph]. Dewpoint near 73°F [23°C] with humidity of 100%. Pressure around 29.03 in [983.1 mb]. UV Index: 5.7. Chance of precipitation 27% with QPF of 0.34 in [8.7 mm]. Tonight Rain with a low around 73°F [23°C]. S wind to around 20 mph [32 kph], with gusts to near 39 mph [62 kph]. Chance of precipitation 27% with QPF of 0.34 in [8.7 mm]. Tuesday Overcast with a high near 80°F [27°C]. NNE wind to around 17 mph [27 kph], with gusts to near 30 mph [47 kph]. Dewpoint near 73°F [23°C] with humidity of 93%. Pressure around 29.03 in [983.1 mb]. UV Index: 7.3. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 66°F [19°C]. NNE wind to around 17 mph [27 kph], with gusts to near 30 mph [47 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Wednesday Overcast with a high near 85°F [29°C]. N wind to around 8 mph [14 kph], with gusts to near 17 mph [27 kph]. Dewpoint near 73°F [23°C] with humidity of 85%. Pressure around 29.03 in [983.1 mb]. UV Index: 7.4. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 60°F [16°C]. N wind to around 8 mph [14 kph], with gusts to near 17 mph [27 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Overcast with a high near 84°F [29°C]. W wind to around 11 mph [18 kph], with gusts to near 14 mph [23 kph]. Dewpoint near 73°F [23°C] with humidity of 91%. Pressure around 29.03 in [983.1 mb]. UV Index: 7.2. Chance of precipitation 10% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 66°F [19°C]. W wind to around 11 mph [18 kph], with gusts to near 14 mph [23 kph]. Chance of precipitation 10% with QPF of 0.00 in [0.0 mm]. Friday Light Showers with a high near 72°F [22°C]. NW wind to around 9 mph [14 kph], with gusts to near 15 mph [24 kph]. Dewpoint near 73°F [23°C] with humidity of 97%. Pressure around 29.03 in [983.1 mb]. UV Index: 0.65. Chance of precipitation 39% with QPF of 0.27 in [6.8 mm]. Friday Night Light Showers with a low around 64°F [18°C]. NW wind to around 9 mph [14 kph], with gusts to near 15 mph [24 kph]. Chance of precipitation 39% with QPF of 0.27 in [6.8 mm]. Saturday Overcast with a high near 84°F [29°C]. NNE wind to around 11 mph [18 kph], with gusts to near 25 mph [40 kph]. Dewpoint near 73°F [23°C] with humidity of 98%. Pressure around 29.03 in [983.1 mb]. UV Index: 7.35. Chance of precipitation 43% with QPF of 0.00 in [0.0 mm]. Saturday Night Overcast with a low around 63°F [17°C]. NNE wind to around 11 mph [18 kph], with gusts to near 25 mph [40 kph]. Chance of precipitation 43% with QPF of 0.00 in [0.0 mm]. Sunday Clear with a high near 84°F [29°C]. NNE wind to around 11 mph [18 kph], with gusts to near 30 mph [49 kph]. Dewpoint near 73°F [23°C] with humidity of 89%. Pressure around 29.03 in [983.1 mb]. UV Index: 7.1. Chance of precipitation 17% with QPF of 0.00 in [0.0 mm]. Sunday Night Clear with a low around 65°F [18°C]. NNE wind to around 11 mph [18 kph], with gusts to near 30 mph [49 kph]. Chance of precipitation 17% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Union, IL

Today: 8.7 mm | 0.34 in

Tonight: 8.7 mm | 0.34 in

Tuesday: 0.0 mm | 0.00 in

Tuesday Night: 0.0 mm | 0.00 in

Wednesday: 0.0 mm | 0.00 in

Wednesday Night: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 6.8 mm | 0.27 in

Friday Night: 6.8 mm | 0.27 in

Saturday: 0.0 mm | 0.00 in

Saturday Night: 0.0 mm | 0.00 in

Sunday: 0.0 mm | 0.00 in

Sunday Night: 0.0 mm | 0.00 in

7 Day and Night - Maximum Wind Speed Forecast for Union, IL

Today: S @ 32 kph | 20 mph

Tonight: S @ 32 kph | 20 mph

Tuesday: NNE @ 27 kph | 17 mph

Tuesday Night: NNE @ 27 kph | 17 mph

Wednesday: N @ 14 kph | 8 mph

Wednesday Night: N @ 14 kph | 8 mph

Thursday: W @ 18 kph | 11 mph

Thursday Night: W @ 18 kph | 11 mph

Friday: NW @ 14 kph | 9 mph

Friday Night: NW @ 14 kph | 9 mph

Saturday: NNE @ 18 kph | 11 mph

Saturday Night: NNE @ 18 kph | 11 mph

Sunday: NNE @ 18 kph | 11 mph

Sunday Night: NNE @ 18 kph | 11 mph

7 Day and Night - Maximum Humidity Forecast for Union, IL

Today: 100 %

Tonight: 100 %

Tuesday: 93 %

Tuesday Night: 93 %

Wednesday: 85 %

Wednesday Night: 85 %

Thursday: 91 %

Thursday Night: 91 %

Friday: 97 %

Friday Night: 97 %

Saturday: 98 %

Saturday Night: 98 %

Sunday: 89 %

Sunday Night: 89 %

7 Day and Night - Snowfall Totals Forecast for Union, IL

Today: 0.0 cm | 0.00 in

Tonight: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

Wednesday: 0.0 cm | 0.00 in

Wednesday Night: 0.0 cm | 0.00 in

Thursday: 0.0 cm | 0.00 in

Thursday Night: 0.0 cm | 0.00 in

Friday: 0.0 cm | 0.00 in

Friday Night: 0.0 cm | 0.00 in

Saturday: 0.0 cm | 0.00 in

Saturday Night: 0.0 cm | 0.00 in

Sunday: 0.0 cm | 0.00 in

Sunday Night: 0.0 cm | 0.00 in

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