Gallagher, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 90°F 32°C Heat Index: 102°F	Observed at: Gallagher, IL	Elevation: 562 ft | 171 m
	Last Updated: July 27, 7:00 PM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 90°F | 32°C
	Pressure: 29.31 in | 992.7 mb	Dewpoint: 76°F | 24°C
	Humidity: 64%	Wind: SSW 7 mph | SSW 11 kph
	Feels Like: 98°F | 37°C	Visibility: 55.7 mi | 89.6 km
	Lat/Long: 38.6344 | -88.1672	Sunrise: 5:50 AM   Sunset: 8:08 PM

7 Day Graphical Forecast

Valid: 1:16 PM 7/28/2026

Today Showers 92 |72 °F 33 |22 °C 49% Chance Precipitation Tuesday Overcast 89 |74 °F 32 |23 °C 15% Chance Precipitation Wednesday Overcast 82 |66 °F 28 |19 °C 1% Chance Precipitation Thursday Overcast 84 |63 °F 29 |17 °C 1% Chance Precipitation Friday Showers 77 |66 °F 25 |19 °C 30% Chance Precipitation Saturday Drizzle 76 |65 °F 25 |18 °C 45% Chance Precipitation Sunday Mostly Clear 81 |62 °F 27 |17 °C 28% Chance Precipitation

7 Hour Graphical Forecast

Valid: 1:16 PM 7/28/2026

1 PM Overcast 89 °F 1% Chance Precipitation

2 PM Overcast 89 °F 1% Chance Precipitation

3 PM Overcast 89 °F 1% Chance Precipitation

4 PM Overcast 89 °F 2% Chance Precipitation

5 PM Overcast 89 °F 2% Chance Precipitation

6 PM Overcast 86 °F 2% Chance Precipitation

7 PM Overcast 84 °F 2% Chance Precipitation

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

7 Day & Night Weather Forecast for Gallagher, IL - (Fahrenheit & Celsius) Valid: 1:16 PM 7/28/2026 Today Showers with a high near 92°F [33°C]. SSW wind to around 22 mph [36 kph], with gusts to near 31 mph [49 kph]. Dewpoint near 76°F [24°C] with humidity of 96%. Pressure around 29.31 in [992.7 mb]. UV Index: 7.7. Chance of precipitation 49% with QPF of 3.63 in [92.1 mm]. Tonight Showers with a low around 72°F [22°C]. SSW wind to around 22 mph [36 kph], with gusts to near 31 mph [49 kph]. Chance of precipitation 49% with QPF of 3.63 in [92.1 mm]. Tuesday Overcast with a high near 89°F [32°C]. NNW wind to around 13 mph [21 kph], with gusts to near 27 mph [43 kph]. Dewpoint near 76°F [24°C] with humidity of 90%. Pressure around 29.31 in [992.7 mb]. UV Index: 7.35. Chance of precipitation 15% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 74°F [23°C]. NNW wind to around 13 mph [21 kph], with gusts to near 27 mph [43 kph]. Chance of precipitation 15% with QPF of 0.00 in [0.0 mm]. Wednesday Overcast with a high near 82°F [28°C]. NNE wind to around 11 mph [18 kph], with gusts to near 18 mph [28 kph]. Dewpoint near 76°F [24°C] with humidity of 85%. Pressure around 29.31 in [992.7 mb]. UV Index: 7.6. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 66°F [19°C]. NNE wind to around 11 mph [18 kph], with gusts to near 18 mph [28 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Overcast with a high near 84°F [29°C]. SE wind to around 6 mph [9 kph], with gusts to near 6 mph [10 kph]. Dewpoint near 76°F [24°C] with humidity of 89%. Pressure around 29.31 in [992.7 mb]. UV Index: 7.6. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 63°F [17°C]. SE wind to around 6 mph [9 kph], with gusts to near 6 mph [10 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Friday Showers with a high near 77°F [25°C]. ESE wind to around 14 mph [22 kph], with gusts to near 30 mph [49 kph]. Dewpoint near 76°F [24°C] with humidity of 98%. Pressure around 29.31 in [992.7 mb]. UV Index: 2.9. Chance of precipitation 30% with QPF of 0.62 in [15.8 mm]. Friday Night Showers with a low around 66°F [19°C]. ESE wind to around 14 mph [22 kph], with gusts to near 30 mph [49 kph]. Chance of precipitation 30% with QPF of 0.62 in [15.8 mm]. Saturday Drizzle with a high near 76°F [25°C]. NE wind to around 15 mph [23 kph], with gusts to near 34 mph [55 kph]. Dewpoint near 76°F [24°C] with humidity of 98%. Pressure around 29.31 in [992.7 mb]. UV Index: 7.15. Chance of precipitation 45% with QPF of 0.15 in [3.8 mm]. Saturday Night Drizzle with a low around 65°F [18°C]. NE wind to around 15 mph [23 kph], with gusts to near 34 mph [55 kph]. Chance of precipitation 45% with QPF of 0.15 in [3.8 mm]. Sunday Mostly Clear with a high near 81°F [27°C]. NNE wind to around 14 mph [22 kph], with gusts to near 27 mph [44 kph]. Dewpoint near 76°F [24°C] with humidity of 98%. Pressure around 29.31 in [992.7 mb]. UV Index: 7.35. Chance of precipitation 28% with QPF of 0.00 in [0.0 mm]. Sunday Night Mostly Clear with a low around 62°F [17°C]. NNE wind to around 14 mph [22 kph], with gusts to near 27 mph [44 kph]. Chance of precipitation 28% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Gallagher, IL

Today: 92.1 mm | 3.63 in

Tonight: 92.1 mm | 3.63 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: 15.8 mm | 0.62 in

Friday Night: 15.8 mm | 0.62 in

Saturday: 3.8 mm | 0.15 in

Saturday Night: 3.8 mm | 0.15 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 Gallagher, IL

Today: SSW @ 36 kph | 22 mph

Tonight: SSW @ 36 kph | 22 mph

Tuesday: NNW @ 21 kph | 13 mph

Tuesday Night: NNW @ 21 kph | 13 mph

Wednesday: NNE @ 18 kph | 11 mph

Wednesday Night: NNE @ 18 kph | 11 mph

Thursday: SE @ 9 kph | 6 mph

Thursday Night: SE @ 9 kph | 6 mph

Friday: ESE @ 22 kph | 14 mph

Friday Night: ESE @ 22 kph | 14 mph

Saturday: NE @ 23 kph | 15 mph

Saturday Night: NE @ 23 kph | 15 mph

Sunday: NNE @ 22 kph | 14 mph

Sunday Night: NNE @ 22 kph | 14 mph

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

Today: 96 %

Tonight: 96 %

Tuesday: 90 %

Tuesday Night: 90 %

Wednesday: 85 %

Wednesday Night: 85 %

Thursday: 89 %

Thursday Night: 89 %

Friday: 98 %

Friday Night: 98 %

Saturday: 98 %

Saturday Night: 98 %

Sunday: 98 %

Sunday Night: 98 %

7 Day and Night - Snowfall Totals Forecast for Gallagher, 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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