Gillespie, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Overcast 78°F 26°C Heat Index: 78°F	Observed at: Gillespie, IL	Elevation: 627 ft | 191 m
	Last Updated: July 16, 10:15 PM Timezone: GMT -5/-4
	Sky Conditions: Overcast	Temperature: 78°F | 26°C
	Pressure: 29.32 in | 992.8 mb	Dewpoint: 76°F | 24°C
	Humidity: 93%	Wind: ESE 3 mph | ESE 5 kph
	Feels Like: 88°F | 31°C	Visibility: 25.9 mi | 41.7 km
	Lat/Long: 39.1297 | -89.8194	Sunrise: 5:46 AM   Sunset: 8:24 PM

7 Day Graphical Forecast

Valid: 10:23 PM 7/16/2026

Tonight Heavy Showers 73 °F 44% Chance Precipitation Friday Overcast 91 |73 °F 16% Chance Precipitation Saturday Drizzle 93 |74 °F 28% Chance Precipitation Sunday Showers 85 |71 °F 24% Chance Precipitation Monday Drizzle 91 |69 °F 5% Chance Precipitation Tuesday Overcast 90 |65 °F 9% Chance Precipitation Wednesday Partly Cloudy 71 |55 °F 4% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:23 PM 7/16/2026

10 PM Overcast 78 °F 4% Chance Precipitation

11 PM Overcast 77 °F 4% Chance Precipitation

12 AM Overcast 77 °F 3% Chance Precipitation

1 AM Partly Cloudy 76 °F 4% Chance Precipitation

2 AM Partly Cloudy 75 °F 4% Chance Precipitation

3 AM Overcast 75 °F 5% Chance Precipitation

4 AM Overcast 74 °F 6% Chance Precipitation

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

7 Day & Night Weather Forecast for Gillespie, IL - (Fahrenheit & Celsius) Valid: 10:23 PM 7/16/2026 Tonight Heavy Showers with a low around 73°F [23°C]. E wind to around 9 mph [14 kph], with gusts to near 13 mph [21 kph]. Chance of precipitation 44% with QPF of 0.94 in [23.8 mm]. Friday Overcast with a high near 91°F [33°C]. W wind to around 12 mph [20 kph], with gusts to near 20 mph [32 kph]. Dewpoint near 76°F [24°C] with humidity of 95%. Pressure around 29.32 in [992.8 mb]. UV Index: 7.75. Chance of precipitation 16% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 73°F [23°C]. W wind to around 12 mph [20 kph], with gusts to near 20 mph [32 kph]. Chance of precipitation 16% with QPF of 0.00 in [0.0 mm]. Saturday Drizzle with a high near 93°F [34°C]. W wind to around 15 mph [24 kph], with gusts to near 27 mph [44 kph]. Dewpoint near 76°F [24°C] with humidity of 89%. Pressure around 29.32 in [992.8 mb]. UV Index: 7.8. Chance of precipitation 28% with QPF of 0.04 in [0.9 mm]. Saturday Night Drizzle with a low around 74°F [23°C]. W wind to around 15 mph [24 kph], with gusts to near 27 mph [44 kph]. Chance of precipitation 28% with QPF of 0.04 in [0.9 mm]. Sunday Showers with a high near 85°F [29°C]. ENE wind to around 9 mph [14 kph], with gusts to near 19 mph [30 kph]. Dewpoint near 76°F [24°C] with humidity of 98%. Pressure around 29.32 in [992.8 mb]. UV Index: 5.3. Chance of precipitation 24% with QPF of 0.43 in [10.9 mm]. Sunday Night Showers with a low around 71°F [22°C]. ENE wind to around 9 mph [14 kph], with gusts to near 19 mph [30 kph]. Chance of precipitation 24% with QPF of 0.43 in [10.9 mm]. Monday Drizzle with a high near 91°F [33°C]. S wind to around 11 mph [17 kph], with gusts to near 26 mph [42 kph]. Dewpoint near 76°F [24°C] with humidity of 95%. Pressure around 29.32 in [992.8 mb]. UV Index: 7.65. Chance of precipitation 5% with QPF of 0.04 in [0.9 mm]. Monday Night Drizzle with a low around 69°F [20°C]. S wind to around 11 mph [17 kph], with gusts to near 26 mph [42 kph]. Chance of precipitation 5% with QPF of 0.04 in [0.9 mm]. Tuesday Overcast with a high near 90°F [32°C]. W wind to around 18 mph [30 kph], with gusts to near 38 mph [61 kph]. Dewpoint near 76°F [24°C] with humidity of 88%. Pressure around 29.32 in [992.8 mb]. UV Index: 7.3. Chance of precipitation 9% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 65°F [19°C]. W wind to around 18 mph [30 kph], with gusts to near 38 mph [61 kph]. Chance of precipitation 9% with QPF of 0.00 in [0.0 mm]. Wednesday Partly Cloudy with a high near 71°F [22°C]. NNE wind to around 12 mph [20 kph], with gusts to near 29 mph [46 kph]. Dewpoint near 76°F [24°C] with humidity of 91%. Pressure around 29.32 in [992.8 mb]. UV Index: 7.55. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Wednesday Night Partly Cloudy with a low around 55°F [13°C]. NNE wind to around 12 mph [20 kph], with gusts to near 29 mph [46 kph]. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Gillespie, IL

Tonight: 23.8 mm | 0.94 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 0.9 mm | 0.04 in

Saturday Night: 0.9 mm | 0.04 in

Sunday: 10.9 mm | 0.43 in

Sunday Night: 10.9 mm | 0.43 in

Monday: 0.9 mm | 0.04 in

Monday Night: 0.9 mm | 0.04 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

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

Tonight: E @ 14 kph | 9 mph

Friday: W @ 20 kph | 12 mph

Friday Night: W @ 20 kph | 12 mph

Saturday: W @ 24 kph | 15 mph

Saturday Night: W @ 24 kph | 15 mph

Sunday: ENE @ 14 kph | 9 mph

Sunday Night: ENE @ 14 kph | 9 mph

Monday: S @ 17 kph | 11 mph

Monday Night: S @ 17 kph | 11 mph

Tuesday: W @ 30 kph | 18 mph

Tuesday Night: W @ 30 kph | 18 mph

Wednesday: NNE @ 20 kph | 12 mph

Wednesday Night: NNE @ 20 kph | 12 mph

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

Tonight: 100 %

Friday: 95 %

Friday Night: 95 %

Saturday: 89 %

Saturday Night: 89 %

Sunday: 98 %

Sunday Night: 98 %

Monday: 95 %

Monday Night: 95 %

Tuesday: 88 %

Tuesday Night: 88 %

Wednesday: 91 %

Wednesday Night: 91 %

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

Tonight: 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

Monday: 0.0 cm | 0.00 in

Monday Night: 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

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