Current Conditions

Mattoon, Illinois

79°F26°C

Hot

Wind

SW 7 mph12 km/h

Humidity

69%

Cloud Cover

As of Wednesday, September 2, 2026 at 3:51 AM CDT

Today's Outlook

Day

Mostly clear and hot, with a high of 99°F37°C and morning low of 78°F26°C. Breezy from the SW at 8 to 9 mph13 to 14 km/h. Heat risk in the afternoon.

Night

Mostly clear, with a low around 79°F26°C. Breezy from the SSW at 6 to 7 mph10 to 12 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Hot	High 99°F37°C	Low 78°F26°C	Precip 0 in0.1 mm7%	Cloud 17%	Wind SW 7 mph12 km/h	Wednesday: Mostly clear and hot, with a high of 99°F37°C and morning low of 78°F26°C. Breezy from the SW at 8 to 9 mph13 to 14 km/h. Heat risk in the afternoon. Wednesday Night: Mostly clear, with a low around 79°F26°C. Breezy from the SSW at 6 to 7 mph10 to 12 km/h.
Hot	High 99°F37°C	Low 78°F25°C	Precip 0 in0 mm—	Cloud 11%	Wind SW 7 mph11 km/h	Thursday: Mostly clear and hot, with a high of 99°F37°C and morning low of 78°F25°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. Heat risk in the afternoon. Thursday Night: Mostly clear, with a low around 80°F26°C. Breezy from the SSW at 6 to 7 mph9 to 12 km/h.
Drizzle	High 98°F37°C	Low 77°F25°C	Precip 0.01 in0.2 mm10%	Cloud 14%	Wind SW 5 mph8 km/h	Friday: Mostly clear and hot, with a high of 98°F37°C and morning low of 77°F25°C. Light wind from the W around 5 mph7 km/h. 10% chance of drizzle in the afternoon. Heat risk in the afternoon. Friday Night: Mostly clear, with a low around 79°F26°C. Light wind from the S around 5 mph8 km/h.
Showers	High 94°F35°CFeels 102°F39°C	Low 77°F25°C	Precip 0.05 in1.3 mm51%	Cloud 43%	Wind NE 5 mph8 km/h	Saturday: Partly cloudy and hot, with a high of 94°F35°C and morning low of 77°F25°C — feels like 102°F39°C. Light wind from the NE around 5 mph8 km/h. 51% chance of showers around midday. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 78°F26°C. Light wind from the ENE around 5 mph9 km/h. 24% chance of drizzle in the evening.
Partly Cloudy	High 88°F31°C	Low 72°F22°C	Precip 0.04 in0.9 mm9%	Cloud 46%	Wind ENE 7 mph11 km/h	Sunday: Partly cloudy and hot, with a high of 88°F31°C and morning low of 72°F22°C. Breezy from the ENE at 7 to 8 mph12 to 13 km/h. Humid. Sunday Night: Partly cloudy, with a low around 74°F23°C. Breezy from the ENE at 7 to 8 mph11 to 12 km/h.
Partly Cloudy	High 88°F31°C	Low 67°F19°C	Precip 0.01 in0.2 mm3%	Cloud 43%	Wind E 7 mph10 km/h	Monday: Partly cloudy and hot, with a high of 88°F31°C and morning low of 67°F19°C. Light wind from the E around 6 mph10 km/h. Monday Night: Partly cloudy, with a low around 69°F21°C. Breezy from the E at 7 mph11 km/h.
Partly Cloudy	High 93°F34°C	Low 68°F20°C	Precip 0 in0.1 mm3%	Cloud 45%	Wind SE 6 mph10 km/h	Tuesday: Mostly cloudy and hot, with a high of 93°F34°C and morning low of 68°F20°C. Light wind from the SSE around 6 mph10 km/h. Tuesday Night: Partly cloudy, with a low around 69°F21°C. Breezy from the SE at 6 to 8 mph10 to 12 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 2	99°F37°C	78°F26°C	0 in0.1 mm· 7%	17%	Hot	SW 7 mph12 km/h
DayMostly clear and hot, with a high of 99°F37°C and morning low of 78°F26°C. Breezy from the SW at 8 to 9 mph13 to 14 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 79°F26°C. Breezy from the SSW at 6 to 7 mph10 to 12 km/h.
	ThursdaySep 3	99°F37°C	78°F25°C	0 in0 mm· —	11%	Hot	SW 7 mph11 km/h
DayMostly clear and hot, with a high of 99°F37°C and morning low of 78°F25°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 80°F26°C. Breezy from the SSW at 6 to 7 mph9 to 12 km/h.
	FridaySep 4	98°F37°C	77°F25°C	0.01 in0.2 mm· 10%	14%	Drizzle	SW 5 mph8 km/h
DayMostly clear and hot, with a high of 98°F37°C and morning low of 77°F25°C. Light wind from the W around 5 mph7 km/h. 10% chance of drizzle in the afternoon. Heat risk in the afternoon. NightMostly clear, with a low around 79°F26°C. Light wind from the S around 5 mph8 km/h.
	SaturdaySep 5	94°F35°C Feels 102°F39°C	77°F25°C	0.05 in1.3 mm· 51%	43%	Showers	NE 5 mph8 km/h
DayPartly cloudy and hot, with a high of 94°F35°C and morning low of 77°F25°C — feels like 102°F39°C. Light wind from the NE around 5 mph8 km/h. 51% chance of showers around midday. Heat risk in the afternoon. NightPartly cloudy, with a low around 78°F26°C. Light wind from the ENE around 5 mph9 km/h. 24% chance of drizzle in the evening.
	SundaySep 6	88°F31°C	72°F22°C	0.04 in0.9 mm· 9%	46%	Partly Cloudy	ENE 7 mph11 km/h
DayPartly cloudy and hot, with a high of 88°F31°C and morning low of 72°F22°C. Breezy from the ENE at 7 to 8 mph12 to 13 km/h. Humid. NightPartly cloudy, with a low around 74°F23°C. Breezy from the ENE at 7 to 8 mph11 to 12 km/h.
	MondaySep 7	88°F31°C	67°F19°C	0.01 in0.2 mm· 3%	43%	Partly Cloudy	E 7 mph10 km/h
DayPartly cloudy and hot, with a high of 88°F31°C and morning low of 67°F19°C. Light wind from the E around 6 mph10 km/h. NightPartly cloudy, with a low around 69°F21°C. Breezy from the E at 7 mph11 km/h.
	TuesdaySep 8	93°F34°C	68°F20°C	0 in0.1 mm· 3%	45%	Partly Cloudy	SE 6 mph10 km/h
DayMostly cloudy and hot, with a high of 93°F34°C and morning low of 68°F20°C. Light wind from the SSE around 6 mph10 km/h. NightPartly cloudy, with a low around 69°F21°C. Breezy from the SE at 6 to 8 mph10 to 12 km/h.
	WednesdaySep 9	96°F36°C Feels 101°F38°C	76°F25°C	0.01 in0.3 mm· 8%	27%	Hot	SSW 9 mph14 km/h
DayPartly cloudy and hot, with a high of 96°F36°C and morning low of 76°F25°C. Breezy from the SW at 9 to 10 mph15 to 15 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 77°F25°C. Breezy from the SSW at 8 to 9 mph13 to 14 km/h.
	ThursdaySep 10	93°F34°C Feels 97°F36°C	77°F25°C	0.03 in0.8 mm· 12%	33%	Drizzle	SW 9 mph14 km/h
DayPartly cloudy and hot, with a high of 93°F34°C and morning low of 77°F25°C. Breezy from the SW at 9 mph14 km/h. 12% chance of drizzle around midday. Heat risk in the afternoon. NightPartly cloudy, with a low around 79°F26°C. Breezy from the SSW at 8 to 9 mph13 to 15 km/h.
	FridaySep 11	91°F33°C	74°F23°C	0.08 in2.1 mm· 13%	41%	Drizzle	SSW 8 mph13 km/h
DayPartly cloudy and hot, with a high of 91°F33°C and morning low of 74°F23°C. Breezy from the SW at 9 to 10 mph14 to 15 km/h. 13% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 76°F24°C. Breezy from the SSW at 8 mph12 km/h. 12% chance of drizzle throughout the night.
	SaturdaySep 12	88°F31°C	72°F22°C	0.13 in3.2 mm· 19%	51%	Showers	SSW 8 mph14 km/h
DayMostly cloudy and hot, with a high of 88°F31°C and morning low of 72°F22°C. Breezy from the SSW at 9 to 10 mph15 to 16 km/h. 19% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 74°F23°C. Breezy from the SSW at 8 mph13 km/h. 18% chance of showers throughout the night.
	SundaySep 13	86°F30°C	72°F22°C	0.13 in3.2 mm· 20%	54%	Showers	SW 9 mph14 km/h
DayMostly cloudy and hot, with a high of 86°F30°C and morning low of 72°F22°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. 20% chance of showers throughout the day. NightMostly cloudy, with a low around 73°F23°C. Breezy from the SSW at 8 to 9 mph13 to 14 km/h. 15% chance of showers throughout the night.
	MondaySep 14	84°F29°C	68°F20°C	0.12 in3.1 mm· 21%	51%	Showers	SSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 84°F29°C and morning low of 68°F20°C. Breezy from the SW at 8 to 9 mph13 to 14 km/h. 21% chance of drizzle throughout the day. NightPartly cloudy, with a low around 70°F21°C. Breezy from the S at 7 to 8 mph12 to 13 km/h. 17% chance of showers throughout the night.
	TuesdaySep 15	84°F29°C	66°F19°C	0.1 in2.6 mm· 19%	49%	Showers	SSW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 84°F29°C and morning low of 66°F19°C. Breezy from the SSW at 8 to 9 mph13 to 14 km/h. 19% chance of showers throughout the day. NightPartly cloudy, with a low around 68°F20°C. Breezy from the S at 7 to 8 mph12 to 12 km/h. 12% chance of drizzle throughout the night.
	WednesdaySep 16	83°F28°C	65°F18°C	0.11 in2.8 mm· 18%	45%	Showers	SSW 8 mph13 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 65°F18°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 18% chance of showers throughout the day. NightPartly cloudy, with a low around 67°F20°C. Breezy from the S at 7 to 8 mph12 to 13 km/h. 15% chance of showers throughout the night.

Nearby Cities

Charleston11 mi17 km Decatur40 mi64 km Urbana44 mi71 km Champaign44 mi71 km Terre Haute51 mi82 km Danville59 mi95 km

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

Pattern	Example	Description
/weather/{country}/{city}/	/weather/united-states/san-francisco/	City forecast (canonical URL)
/weather/{city}/	/weather/tokyo/	Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}	/weather/nearby?lat=48.1&lon=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 39.4831°N, 88.3728°W·Elevation: 224m·Timezone: America/Chicago·Population: 18,113