Mascoutah, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Overcast 78°F 26°C Heat Index: 78°F	Observed at: Mascoutah, IL	Elevation: 544 ft | 166 m
	Last Updated: July 16, 10:30 PM Timezone: GMT -5/-4
	Sky Conditions: Overcast	Temperature: 78°F | 26°C
	Pressure: 29.57 in | 1001.3 mb	Dewpoint: 76°F | 24°C
	Humidity: 93%	Wind: SSW 5 mph | SSW 8 kph
	Feels Like: 87°F | 31°C	Visibility: 28.7 mi | 46.3 km
	Lat/Long: 38.4903 | -89.7931	Sunrise: 5:48 AM   Sunset: 8:22 PM

7 Day Graphical Forecast

Valid: 10:31 PM 7/16/2026

Tonight Heavy Showers 75 °F 42% Chance Precipitation Friday Overcast 91 |74 °F 15% Chance Precipitation Saturday Overcast 94 |74 °F 30% Chance Precipitation Sunday Thunderstorm with Hail 91 |73 °F 30% Chance Precipitation Monday Light Showers 95 |71 °F 6% Chance Precipitation Tuesday Overcast 97 |68 °F 3% Chance Precipitation Wednesday Overcast 73 |61 °F 3% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:31 PM 7/16/2026

10 PM Overcast 78 °F 17% Chance Precipitation

11 PM Overcast 78 °F 7% Chance Precipitation

12 AM Overcast 77 °F 3% Chance Precipitation

1 AM Overcast 77 °F 3% Chance Precipitation

2 AM Partly Cloudy 76 °F 2% Chance Precipitation

3 AM Mostly Clear 76 °F 2% Chance Precipitation

4 AM Clear 75 °F 6% Chance Precipitation

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

7 Day & Night Weather Forecast for Mascoutah, IL - (Fahrenheit & Celsius) Valid: 10:31 PM 7/16/2026 Tonight Heavy Showers with a low around 75°F [24°C]. SSW wind to around 11 mph [17 kph], with gusts to near 17 mph [28 kph]. Chance of precipitation 42% with QPF of 1.80 in [45.7 mm]. Friday Overcast with a high near 91°F [33°C]. WSW wind to around 10 mph [17 kph], with gusts to near 18 mph [28 kph]. Dewpoint near 76°F [24°C] with humidity of 95%. Pressure around 29.57 in [1001.3 mb]. UV Index: 7.75. Chance of precipitation 15% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 74°F [23°C]. WSW wind to around 10 mph [17 kph], with gusts to near 18 mph [28 kph]. Chance of precipitation 15% with QPF of 0.00 in [0.0 mm]. Saturday Overcast with a high near 94°F [34°C]. W wind to around 14 mph [22 kph], with gusts to near 22 mph [36 kph]. Dewpoint near 76°F [24°C] with humidity of 85%. Pressure around 29.57 in [1001.3 mb]. UV Index: 7.85. Chance of precipitation 30% with QPF of 0.00 in [0.0 mm]. Saturday Night Overcast with a low around 74°F [24°C]. W wind to around 14 mph [22 kph], with gusts to near 22 mph [36 kph]. Chance of precipitation 30% with QPF of 0.00 in [0.0 mm]. Sunday Thunderstorm with Hail with a high near 91°F [33°C]. N wind to around 10 mph [17 kph], with gusts to near 20 mph [32 kph]. Dewpoint near 76°F [24°C] with humidity of 95%. Pressure around 29.57 in [1001.3 mb]. UV Index: 7.8. Chance of precipitation 30% with QPF of 0.39 in [9.9 mm]. Sunday Night Thunderstorm with Hail with a low around 73°F [23°C]. N wind to around 10 mph [17 kph], with gusts to near 20 mph [32 kph]. Chance of precipitation 30% with QPF of 0.39 in [9.9 mm]. Monday Light Showers with a high near 95°F [35°C]. SSE wind to around 11 mph [17 kph], with gusts to near 26 mph [42 kph]. Dewpoint near 76°F [24°C] with humidity of 97%. Pressure around 29.57 in [1001.3 mb]. UV Index: 7. Chance of precipitation 6% with QPF of 0.11 in [2.8 mm]. Monday Night Light Showers with a low around 71°F [22°C]. SSE wind to around 11 mph [17 kph], with gusts to near 26 mph [42 kph]. Chance of precipitation 6% with QPF of 0.11 in [2.8 mm]. Tuesday Overcast with a high near 97°F [36°C]. WNW wind to around 21 mph [34 kph], with gusts to near 33 mph [53 kph]. Dewpoint near 76°F [24°C] with humidity of 84%. Pressure around 29.57 in [1001.3 mb]. UV Index: 7.6. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 68°F [20°C]. WNW wind to around 21 mph [34 kph], with gusts to near 33 mph [53 kph]. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm]. Wednesday Overcast with a high near 73°F [23°C]. NNE wind to around 12 mph [19 kph], with gusts to near 28 mph [44 kph]. Dewpoint near 76°F [24°C] with humidity of 88%. Pressure around 29.57 in [1001.3 mb]. UV Index: 7.3. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 61°F [16°C]. NNE wind to around 12 mph [19 kph], with gusts to near 28 mph [44 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 Mascoutah, IL

Tonight: 45.7 mm | 1.80 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: 9.9 mm | 0.39 in

Sunday Night: 9.9 mm | 0.39 in

Monday: 2.8 mm | 0.11 in

Monday Night: 2.8 mm | 0.11 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 Mascoutah, IL

Tonight: SSW @ 17 kph | 11 mph

Friday: WSW @ 17 kph | 10 mph

Friday Night: WSW @ 17 kph | 10 mph

Saturday: W @ 22 kph | 14 mph

Saturday Night: W @ 22 kph | 14 mph

Sunday: N @ 17 kph | 10 mph

Sunday Night: N @ 17 kph | 10 mph

Monday: SSE @ 17 kph | 11 mph

Monday Night: SSE @ 17 kph | 11 mph

Tuesday: WNW @ 34 kph | 21 mph

Tuesday Night: WNW @ 34 kph | 21 mph

Wednesday: NNE @ 19 kph | 12 mph

Wednesday Night: NNE @ 19 kph | 12 mph

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

Tonight: 97 %

Friday: 95 %

Friday Night: 95 %

Saturday: 85 %

Saturday Night: 85 %

Sunday: 95 %

Sunday Night: 95 %

Monday: 97 %

Monday Night: 97 %

Tuesday: 84 %

Tuesday Night: 84 %

Wednesday: 88 %

Wednesday Night: 88 %

7 Day and Night - Snowfall Totals Forecast for Mascoutah, 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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