Johnsonville, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Overcast 79°F 26°C Heat Index: 79°F	Observed at: Johnsonville, IL	Elevation: 548 ft | 167 m
	Last Updated: July 16, 10:30 PM Timezone: GMT -5/-4
	Sky Conditions: Overcast	Temperature: 79°F | 26°C
	Pressure: 29.46 in | 997.5 mb	Dewpoint: 76°F | 24°C
	Humidity: 90%	Wind: S 5 mph | S 8 kph
	Feels Like: 88°F | 31°C	Visibility: 27.1 mi | 43.6 km
	Lat/Long: 38.5222 | -88.5369	Sunrise: 5:43 AM   Sunset: 8:17 PM

7 Day Graphical Forecast

Valid: 10:32 PM 7/16/2026

Tonight Foggy 73 °F 30% Chance Precipitation Friday Overcast 90 |73 °F 20% Chance Precipitation Saturday Overcast 95 |75 °F 36% Chance Precipitation Sunday Light Showers 86 |72 °F 36% Chance Precipitation Monday Light Drizzle 90 |69 °F 6% Chance Precipitation Tuesday Overcast 95 |69 °F 7% Chance Precipitation Wednesday Partly Cloudy 74 |60 °F 4% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:32 PM 7/16/2026

10 PM Overcast 79 °F 7% Chance Precipitation

11 PM Overcast 79 °F 11% Chance Precipitation

12 AM Overcast 78 °F 7% Chance Precipitation

1 AM Partly Cloudy 77 °F 6% Chance Precipitation

2 AM Mostly Clear 77 °F 4% Chance Precipitation

3 AM Clear 75 °F 3% Chance Precipitation

4 AM Mostly Clear 75 °F 3% Chance Precipitation

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

7 Day & Night Weather Forecast for Johnsonville, IL - (Fahrenheit & Celsius) Valid: 10:32 PM 7/16/2026 Tonight Foggy with a low around 73°F [23°C]. SSE wind to around 6 mph [9 kph], with gusts to near 6 mph [10 kph]. Chance of precipitation 30% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 90°F [32°C]. WSW wind to around 11 mph [17 kph], with gusts to near 15 mph [25 kph]. Dewpoint near 76°F [24°C] with humidity of 95%. Pressure around 29.46 in [997.5 mb]. UV Index: 7.75. Chance of precipitation 20% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 73°F [23°C]. WSW wind to around 11 mph [17 kph], with gusts to near 15 mph [25 kph]. Chance of precipitation 20% with QPF of 0.00 in [0.0 mm]. Saturday Overcast with a high near 95°F [35°C]. W wind to around 16 mph [25 kph], with gusts to near 26 mph [42 kph]. Dewpoint near 76°F [24°C] with humidity of 84%. Pressure around 29.46 in [997.5 mb]. UV Index: 7.8. Chance of precipitation 36% with QPF of 0.00 in [0.0 mm]. Saturday Night Overcast with a low around 75°F [24°C]. W wind to around 16 mph [25 kph], with gusts to near 26 mph [42 kph]. Chance of precipitation 36% with QPF of 0.00 in [0.0 mm]. Sunday Light Showers with a high near 86°F [30°C]. NNE wind to around 8 mph [13 kph], with gusts to near 13 mph [21 kph]. Dewpoint near 76°F [24°C] with humidity of 97%. Pressure around 29.46 in [997.5 mb]. UV Index: 7.7. Chance of precipitation 36% with QPF of 0.15 in [3.7 mm]. Sunday Night Light Showers with a low around 72°F [22°C]. NNE wind to around 8 mph [13 kph], with gusts to near 13 mph [21 kph]. Chance of precipitation 36% with QPF of 0.15 in [3.7 mm]. Monday Light Drizzle with a high near 90°F [32°C]. S wind to around 8 mph [13 kph], with gusts to near 17 mph [27 kph]. Dewpoint near 76°F [24°C] with humidity of 91%. Pressure around 29.46 in [997.5 mb]. UV Index: 6.95. Chance of precipitation 6% with QPF of 0.01 in [0.3 mm]. Monday Night Light Drizzle with a low around 69°F [20°C]. S wind to around 8 mph [13 kph], with gusts to near 17 mph [27 kph]. Chance of precipitation 6% with QPF of 0.01 in [0.3 mm]. Tuesday Overcast with a high near 95°F [35°C]. W wind to around 17 mph [27 kph], with gusts to near 31 mph [50 kph]. Dewpoint near 76°F [24°C] with humidity of 85%. Pressure around 29.46 in [997.5 mb]. UV Index: 7.45. Chance of precipitation 7% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 69°F [21°C]. W wind to around 17 mph [27 kph], with gusts to near 31 mph [50 kph]. Chance of precipitation 7% with QPF of 0.00 in [0.0 mm]. Wednesday Partly Cloudy with a high near 74°F [23°C]. NNE wind to around 12 mph [19 kph], with gusts to near 28 mph [45 kph]. Dewpoint near 76°F [24°C] with humidity of 89%. Pressure around 29.46 in [997.5 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 60°F [16°C]. NNE wind to around 12 mph [19 kph], with gusts to near 28 mph [45 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 Johnsonville, IL

Tonight: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 0.0 mm | 0.00 in

Saturday Night: 0.0 mm | 0.00 in

Sunday: 3.7 mm | 0.15 in

Sunday Night: 3.7 mm | 0.15 in

Monday: 0.3 mm | 0.01 in

Monday Night: 0.3 mm | 0.01 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 Johnsonville, IL

Tonight: SSE @ 9 kph | 6 mph

Friday: WSW @ 17 kph | 11 mph

Friday Night: WSW @ 17 kph | 11 mph

Saturday: W @ 25 kph | 16 mph

Saturday Night: W @ 25 kph | 16 mph

Sunday: NNE @ 13 kph | 8 mph

Sunday Night: NNE @ 13 kph | 8 mph

Monday: S @ 13 kph | 8 mph

Monday Night: S @ 13 kph | 8 mph

Tuesday: W @ 27 kph | 17 mph

Tuesday Night: W @ 27 kph | 17 mph

Wednesday: NNE @ 19 kph | 12 mph

Wednesday Night: NNE @ 19 kph | 12 mph

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

Tonight: 100 %

Friday: 95 %

Friday Night: 95 %

Saturday: 84 %

Saturday Night: 84 %

Sunday: 97 %

Sunday Night: 97 %

Monday: 91 %

Monday Night: 91 %

Tuesday: 85 %

Tuesday Night: 85 %

Wednesday: 89 %

Wednesday Night: 89 %

7 Day and Night - Snowfall Totals Forecast for Johnsonville, 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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