Mattoon, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Partly Cloudy 79°F 26°C Heat Index: 79°F	Observed at: Mattoon, IL	Elevation: 705 ft | 215 m
	Last Updated: July 16, 10:15 PM Timezone: GMT -5/-4
	Sky Conditions: Partly Cloudy	Temperature: 79°F | 26°C
	Pressure: 29.26 in | 990.9 mb	Dewpoint: 74°F | 23°C
	Humidity: 86%	Wind: W 4 mph | W 6 kph
	Feels Like: 88°F | 31°C	Visibility: 31.2 mi | 50.2 km
	Lat/Long: 39.4831 | -88.3728	Sunrise: 5:39 AM   Sunset: 8:19 PM

7 Day Graphical Forecast

Valid: 10:19 PM 7/16/2026

Tonight Overcast 71 °F 21% Chance Precipitation Friday Overcast 89 |73 °F 29% Chance Precipitation Saturday Light Showers 92 |74 °F 41% Chance Precipitation Sunday Light Showers 82 |67 °F 32% Chance Precipitation Monday Light Drizzle 85 |67 °F 8% Chance Precipitation Tuesday Thunderstorm 89 |66 °F 13% Chance Precipitation Wednesday Overcast 70 |54 °F 4% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:19 PM 7/16/2026

10 PM Partly Cloudy 79 °F 7% Chance Precipitation

11 PM Clear 78 °F 4% Chance Precipitation

12 AM Overcast 77 °F 4% Chance Precipitation

1 AM Overcast 76 °F 5% Chance Precipitation

2 AM Mostly Clear 75 °F 3% Chance Precipitation

3 AM Clear 75 °F 4% Chance Precipitation

4 AM Clear 74 °F 5% Chance Precipitation

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

7 Day & Night Weather Forecast for Mattoon, IL - (Fahrenheit & Celsius) Valid: 10:19 PM 7/16/2026 Tonight Overcast with a low around 71°F [22°C]. S wind to around 8 mph [13 kph], with gusts to near 11 mph [17 kph]. Chance of precipitation 21% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 89°F [31°C]. WSW wind to around 9 mph [15 kph], with gusts to near 15 mph [24 kph]. Dewpoint near 74°F [23°C] with humidity of 95%. Pressure around 29.26 in [990.9 mb]. UV Index: 7.65. Chance of precipitation 29% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 73°F [23°C]. WSW wind to around 9 mph [15 kph], with gusts to near 15 mph [24 kph]. Chance of precipitation 29% with QPF of 0.00 in [0.0 mm]. Saturday Light Showers with a high near 92°F [33°C]. W wind to around 16 mph [25 kph], with gusts to near 27 mph [44 kph]. Dewpoint near 74°F [23°C] with humidity of 94%. Pressure around 29.26 in [990.9 mb]. UV Index: 7.7. Chance of precipitation 41% with QPF of 0.09 in [2.2 mm]. Saturday Night Light Showers with a low around 74°F [24°C]. W wind to around 16 mph [25 kph], with gusts to near 27 mph [44 kph]. Chance of precipitation 41% with QPF of 0.09 in [2.2 mm]. Sunday Light Showers with a high near 82°F [28°C]. ENE wind to around 7 mph [12 kph], with gusts to near 17 mph [27 kph]. Dewpoint near 74°F [23°C] with humidity of 97%. Pressure around 29.26 in [990.9 mb]. UV Index: 7.7. Chance of precipitation 32% with QPF of 0.14 in [3.5 mm]. Sunday Night Light Showers with a low around 67°F [19°C]. ENE wind to around 7 mph [12 kph], with gusts to near 17 mph [27 kph]. Chance of precipitation 32% with QPF of 0.14 in [3.5 mm]. Monday Light Drizzle with a high near 85°F [30°C]. S wind to around 9 mph [15 kph], with gusts to near 22 mph [36 kph]. Dewpoint near 74°F [23°C] with humidity of 94%. Pressure around 29.26 in [990.9 mb]. UV Index: 7.25. Chance of precipitation 8% with QPF of 0.00 in [0.1 mm]. Monday Night Light Drizzle with a low around 67°F [19°C]. S wind to around 9 mph [15 kph], with gusts to near 22 mph [36 kph]. Chance of precipitation 8% with QPF of 0.00 in [0.1 mm]. Tuesday Thunderstorm with a high near 89°F [32°C]. W wind to around 17 mph [28 kph], with gusts to near 35 mph [56 kph]. Dewpoint near 74°F [23°C] with humidity of 94%. Pressure around 29.26 in [990.9 mb]. UV Index: 7.15. Chance of precipitation 13% with QPF of 0.01 in [0.3 mm]. Tuesday Night Thunderstorm with a low around 66°F [19°C]. W wind to around 17 mph [28 kph], with gusts to near 35 mph [56 kph]. Chance of precipitation 13% with QPF of 0.01 in [0.3 mm]. Wednesday Overcast with a high near 70°F [21°C]. NNE wind to around 13 mph [20 kph], with gusts to near 30 mph [48 kph]. Dewpoint near 74°F [23°C] with humidity of 84%. Pressure around 29.26 in [990.9 mb]. UV Index: 7.5. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 54°F [12°C]. NNE wind to around 13 mph [20 kph], with gusts to near 30 mph [48 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 Mattoon, IL

Tonight: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 2.2 mm | 0.09 in

Saturday Night: 2.2 mm | 0.09 in

Sunday: 3.5 mm | 0.14 in

Sunday Night: 3.5 mm | 0.14 in

Monday: 0.1 mm | 0.00 in

Monday Night: 0.1 mm | 0.00 in

Tuesday: 0.3 mm | 0.01 in

Tuesday Night: 0.3 mm | 0.01 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 Mattoon, IL

Tonight: S @ 13 kph | 8 mph

Friday: WSW @ 15 kph | 9 mph

Friday Night: WSW @ 15 kph | 9 mph

Saturday: W @ 25 kph | 16 mph

Saturday Night: W @ 25 kph | 16 mph

Sunday: ENE @ 12 kph | 7 mph

Sunday Night: ENE @ 12 kph | 7 mph

Monday: S @ 15 kph | 9 mph

Monday Night: S @ 15 kph | 9 mph

Tuesday: W @ 28 kph | 17 mph

Tuesday Night: W @ 28 kph | 17 mph

Wednesday: NNE @ 20 kph | 13 mph

Wednesday Night: NNE @ 20 kph | 13 mph

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

Tonight: 94 %

Friday: 95 %

Friday Night: 95 %

Saturday: 94 %

Saturday Night: 94 %

Sunday: 97 %

Sunday Night: 97 %

Monday: 94 %

Monday Night: 94 %

Tuesday: 94 %

Tuesday Night: 94 %

Wednesday: 84 %

Wednesday Night: 84 %

7 Day and Night - Snowfall Totals Forecast for Mattoon, 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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