Jacksonville, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Partly Cloudy 79°F 26°C Heat Index: 79°F	Observed at: Jacksonville, IL	Elevation: 620 ft | 189 m
	Last Updated: July 16, 10:30 PM Timezone: GMT -5/-4
	Sky Conditions: Partly Cloudy	Temperature: 79°F | 26°C
	Pressure: 29.36 in | 994.1 mb	Dewpoint: 72°F | 22°C
	Humidity: 79%	Wind: S 3 mph | S 5 kph
	Feels Like: 87°F | 31°C	Visibility: 34.7 mi | 55.8 km
	Lat/Long: 39.7339 | -90.2289	Sunrise: 5:46 AM   Sunset: 8:27 PM

7 Day Graphical Forecast

Valid: 10:31 PM 7/16/2026

Tonight Overcast 69 °F 14% Chance Precipitation Friday Overcast 92 |73 °F 21% Chance Precipitation Saturday Light Drizzle 96 |76 °F 37% Chance Precipitation Sunday Showers 84 |72 °F 24% Chance Precipitation Monday Light Showers 92 |69 °F 6% Chance Precipitation Tuesday Overcast 88 |67 °F 15% Chance Precipitation Wednesday Partly Cloudy 71 |54 °F 3% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:31 PM 7/16/2026

10 PM Clear 80 °F 2% Chance Precipitation

11 PM Overcast 79 °F 3% Chance Precipitation

12 AM Overcast 78 °F 4% Chance Precipitation

1 AM Overcast 77 °F 5% Chance Precipitation

2 AM Overcast 77 °F 5% Chance Precipitation

3 AM Overcast 75 °F 7% Chance Precipitation

4 AM Mostly Clear 75 °F 6% Chance Precipitation

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

7 Day & Night Weather Forecast for Jacksonville, IL - (Fahrenheit & Celsius) Valid: 10:31 PM 7/16/2026 Tonight Overcast with a low around 69°F [20°C]. SE wind to around 8 mph [12 kph], with gusts to near 11 mph [17 kph]. Chance of precipitation 14% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 92°F [34°C]. WSW wind to around 12 mph [19 kph], with gusts to near 19 mph [30 kph]. Dewpoint near 72°F [22°C] with humidity of 94%. Pressure around 29.36 in [994.1 mb]. UV Index: 7.1. Chance of precipitation 21% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 73°F [23°C]. WSW wind to around 12 mph [19 kph], with gusts to near 19 mph [30 kph]. Chance of precipitation 21% with QPF of 0.00 in [0.0 mm]. Saturday Light Drizzle with a high near 96°F [35°C]. W wind to around 13 mph [22 kph], with gusts to near 29 mph [47 kph]. Dewpoint near 72°F [22°C] with humidity of 91%. Pressure around 29.36 in [994.1 mb]. UV Index: 7.75. Chance of precipitation 37% with QPF of 0.05 in [1.2 mm]. Saturday Night Light Drizzle with a low around 76°F [25°C]. W wind to around 13 mph [22 kph], with gusts to near 29 mph [47 kph]. Chance of precipitation 37% with QPF of 0.05 in [1.2 mm]. Sunday Showers with a high near 84°F [29°C]. E wind to around 9 mph [15 kph], with gusts to near 21 mph [33 kph]. Dewpoint near 72°F [22°C] with humidity of 97%. Pressure around 29.36 in [994.1 mb]. UV Index: 7.75. Chance of precipitation 24% with QPF of 0.31 in [7.9 mm]. Sunday Night Showers with a low around 72°F [22°C]. E wind to around 9 mph [15 kph], with gusts to near 21 mph [33 kph]. Chance of precipitation 24% with QPF of 0.31 in [7.9 mm]. Monday Light Showers with a high near 92°F [33°C]. S wind to around 9 mph [14 kph], with gusts to near 20 mph [33 kph]. Dewpoint near 72°F [22°C] with humidity of 96%. Pressure around 29.36 in [994.1 mb]. UV Index: 7.8. Chance of precipitation 6% with QPF of 0.20 in [5.0 mm]. Monday Night Light Showers with a low around 69°F [21°C]. S wind to around 9 mph [14 kph], with gusts to near 20 mph [33 kph]. Chance of precipitation 6% with QPF of 0.20 in [5.0 mm]. Tuesday Overcast with a high near 88°F [31°C]. WNW wind to around 19 mph [30 kph], with gusts to near 37 mph [59 kph]. Dewpoint near 72°F [22°C] with humidity of 77%. Pressure around 29.36 in [994.1 mb]. UV Index: 7.1. Chance of precipitation 15% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 67°F [19°C]. WNW wind to around 19 mph [30 kph], with gusts to near 37 mph [59 kph]. Chance of precipitation 15% 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 [19 kph], with gusts to near 26 mph [42 kph]. Dewpoint near 72°F [22°C] with humidity of 84%. Pressure around 29.36 in [994.1 mb]. UV Index: 7.65. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm]. Wednesday Night Partly Cloudy with a low around 54°F [12°C]. NNE wind to around 12 mph [19 kph], with gusts to near 26 mph [42 kph]. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Jacksonville, IL

Tonight: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 1.2 mm | 0.05 in

Saturday Night: 1.2 mm | 0.05 in

Sunday: 7.9 mm | 0.31 in

Sunday Night: 7.9 mm | 0.31 in

Monday: 5.0 mm | 0.20 in

Monday Night: 5.0 mm | 0.20 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 Jacksonville, IL

Tonight: SE @ 12 kph | 8 mph

Friday: WSW @ 19 kph | 12 mph

Friday Night: WSW @ 19 kph | 12 mph

Saturday: W @ 22 kph | 13 mph

Saturday Night: W @ 22 kph | 13 mph

Sunday: E @ 15 kph | 9 mph

Sunday Night: E @ 15 kph | 9 mph

Monday: S @ 14 kph | 9 mph

Monday Night: S @ 14 kph | 9 mph

Tuesday: WNW @ 30 kph | 19 mph

Tuesday Night: WNW @ 30 kph | 19 mph

Wednesday: NNE @ 19 kph | 12 mph

Wednesday Night: NNE @ 19 kph | 12 mph

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

Tonight: 97 %

Friday: 94 %

Friday Night: 94 %

Saturday: 91 %

Saturday Night: 91 %

Sunday: 97 %

Sunday Night: 97 %

Monday: 96 %

Monday Night: 96 %

Tuesday: 77 %

Tuesday Night: 77 %

Wednesday: 84 %

Wednesday Night: 84 %

7 Day and Night - Snowfall Totals Forecast for Jacksonville, 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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