Mattoon, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Overcast 75°F 24°C Heat Index: 75°F	Observed at: Mattoon, IL	Elevation: 705 ft | 215 m
	Last Updated: July 27, 12:15 AM Timezone: GMT -5/-4
	Sky Conditions: Overcast	Temperature: 75°F | 24°C
	Pressure: 29.09 in | 985.1 mb	Dewpoint: 73°F | 23°C
	Humidity: 94%	Wind: ESE 6 mph | ESE 10 kph
	Feels Like: 83°F | 28°C	Visibility: 24.9 mi | 40 km
	Lat/Long: 39.4831 | -88.3728	Sunrise: 5:48 AM   Sunset: 8:10 PM

7 Day Graphical Forecast

Valid: 1:18 PM 7/28/2026

Tonight Rain 72 °F 19% Chance Precipitation Tuesday Overcast 86 |67 °F 4% Chance Precipitation Wednesday Overcast 80 |60 °F 1% Chance Precipitation Thursday Overcast 82 |64 °F 1% Chance Precipitation Friday Drizzle 72 |64 °F 27% Chance Precipitation Saturday Light Drizzle 76 |62 °F 25% Chance Precipitation Sunday Clear 83 |63 °F 12% Chance Precipitation

7 Hour Graphical Forecast

Valid: 1:18 PM 7/28/2026

1 PM Overcast 84 °F 2% Chance Precipitation

2 PM Overcast 85 °F 2% Chance Precipitation

3 PM Overcast 85 °F 2% Chance Precipitation

4 PM Clear 86 °F 2% Chance Precipitation

5 PM Clear 84 °F 2% Chance Precipitation

6 PM Clear 82 °F 2% Chance Precipitation

7 PM Clear 79 °F 2% 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: 1:18 PM 7/28/2026 Tonight Rain with a low around 72°F [22°C]. SSW wind to around 17 mph [28 kph], with gusts to near 26 mph [42 kph]. Chance of precipitation 19% with QPF of 0.16 in [4.0 mm]. Tuesday Overcast with a high near 86°F [30°C]. N wind to around 14 mph [22 kph], with gusts to near 23 mph [37 kph]. Dewpoint near 73°F [23°C] with humidity of 92%. Pressure around 29.09 in [985.1 mb]. UV Index: 7.15. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 67°F [20°C]. N wind to around 14 mph [22 kph], with gusts to near 23 mph [37 kph]. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Wednesday Overcast with a high near 80°F [27°C]. NE wind to around 9 mph [14 kph], with gusts to near 22 mph [35 kph]. Dewpoint near 73°F [23°C] with humidity of 89%. Pressure around 29.09 in [985.1 mb]. UV Index: 7.55. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 60°F [15°C]. NE wind to around 9 mph [14 kph], with gusts to near 22 mph [35 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Overcast with a high near 82°F [28°C]. SSE wind to around 8 mph [13 kph], with gusts to near 14 mph [23 kph]. Dewpoint near 73°F [23°C] with humidity of 91%. Pressure around 29.09 in [985.1 mb]. UV Index: 7.45. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 64°F [18°C]. SSE wind to around 8 mph [13 kph], with gusts to near 14 mph [23 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Friday Drizzle with a high near 72°F [22°C]. SSE wind to around 14 mph [22 kph], with gusts to near 31 mph [49 kph]. Dewpoint near 73°F [23°C] with humidity of 97%. Pressure around 29.09 in [985.1 mb]. UV Index: 0.95. Chance of precipitation 27% with QPF of 0.27 in [6.9 mm]. Friday Night Drizzle with a low around 64°F [18°C]. SSE wind to around 14 mph [22 kph], with gusts to near 31 mph [49 kph]. Chance of precipitation 27% with QPF of 0.27 in [6.9 mm]. Saturday Light Drizzle with a high near 76°F [25°C]. ENE wind to around 14 mph [23 kph], with gusts to near 26 mph [42 kph]. Dewpoint near 73°F [23°C] with humidity of 96%. Pressure around 29.09 in [985.1 mb]. UV Index: 5.4. Chance of precipitation 25% with QPF of 0.07 in [1.8 mm]. Saturday Night Light Drizzle with a low around 62°F [17°C]. ENE wind to around 14 mph [23 kph], with gusts to near 26 mph [42 kph]. Chance of precipitation 25% with QPF of 0.07 in [1.8 mm]. Sunday Clear with a high near 83°F [28°C]. NNE wind to around 6 mph [10 kph], with gusts to near 9 mph [14 kph]. Dewpoint near 73°F [23°C] with humidity of 98%. Pressure around 29.09 in [985.1 mb]. UV Index: 7.35. Chance of precipitation 12% with QPF of 0.00 in [0.0 mm]. Sunday Night Clear with a low around 63°F [17°C]. NNE wind to around 6 mph [10 kph], with gusts to near 9 mph [14 kph]. Chance of precipitation 12% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Mattoon, IL

Tonight: 4.0 mm | 0.16 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

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 6.9 mm | 0.27 in

Friday Night: 6.9 mm | 0.27 in

Saturday: 1.8 mm | 0.07 in

Saturday Night: 1.8 mm | 0.07 in

Sunday: 0.0 mm | 0.00 in

Sunday Night: 0.0 mm | 0.00 in

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

Tonight: SSW @ 28 kph | 17 mph

Tuesday: N @ 22 kph | 14 mph

Tuesday Night: N @ 22 kph | 14 mph

Wednesday: NE @ 14 kph | 9 mph

Wednesday Night: NE @ 14 kph | 9 mph

Thursday: SSE @ 13 kph | 8 mph

Thursday Night: SSE @ 13 kph | 8 mph

Friday: SSE @ 22 kph | 14 mph

Friday Night: SSE @ 22 kph | 14 mph

Saturday: ENE @ 23 kph | 14 mph

Saturday Night: ENE @ 23 kph | 14 mph

Sunday: NNE @ 10 kph | 6 mph

Sunday Night: NNE @ 10 kph | 6 mph

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

Tonight: 96 %

Tuesday: 92 %

Tuesday Night: 92 %

Wednesday: 89 %

Wednesday Night: 89 %

Thursday: 91 %

Thursday Night: 91 %

Friday: 97 %

Friday Night: 97 %

Saturday: 96 %

Saturday Night: 96 %

Sunday: 98 %

Sunday Night: 98 %

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

Tonight: 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

Thursday: 0.0 cm | 0.00 in

Thursday Night: 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

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