Current Conditions

Decatur, Illinois

77°F25°C

Drizzle

Wind

S 8 mph13 km/h

Humidity

56%

Cloud Cover

50%

As of Wednesday, September 9, 2026 at 12:00 AM CDT

Today's Outlook

Day

Partly cloudy and hot, with a high of 87°F31°C and morning low of 75°F24°C. Light wind from the W around 6 mph9 km/h. 12% chance of drizzle. Humid.

Night

Mostly cloudy, with a low around 75°F24°C. Breezy from the SSW at 6 to 8 mph10 to 14 km/h. 33% chance of drizzle in the evening.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Drizzle	High 87°F31°CFeels 91°F33°C	Low 75°F24°C	Precip 0.03 in0.8 mm33%	Cloud 53%	Wind WSW 6 mph10 km/h	Wednesday: Partly cloudy and hot, with a high of 87°F31°C and morning low of 75°F24°C. Light wind from the W around 6 mph9 km/h. 12% chance of drizzle. Humid. Wednesday Night: Mostly cloudy, with a low around 75°F24°C. Breezy from the SSW at 6 to 8 mph10 to 14 km/h. 33% chance of drizzle in the evening.
Rain	High 76°F24°C	Low 69°F20°C	Precip 0.91 in23 mm97%	Cloud 93%	Wind NW 4 mph6 km/h	Thursday: Overcast and warm, with a high of 76°F24°C. Light wind from the WNW around 4 mph6 km/h. 97% chance of rain throughout the day. Humid. Thursday Night: Overcast, with a low around 69°F20°C. Light wind from the NNE around 3 mph5 km/h. 95% chance of rain throughout the night.
Drizzle	High 82°F28°C	Low 65°F18°C	Precip 0.05 in1.2 mm19%	Cloud 54%	Wind ESE 5 mph8 km/h	Friday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 65°F18°C. Light wind from the ESE around 5 mph9 km/h. 19% chance of drizzle throughout the day. Friday Night: Partly cloudy, with a low around 65°F19°C. Light wind from the E around 5 mph8 km/h. 10% chance of drizzle overnight.
Drizzle	High 86°F30°CFeels 90°F32°C	Low 67°F20°C	Precip 0.04 in0.9 mm16%	Cloud 47%	Wind SW 6 mph9 km/h	Saturday: Mostly cloudy and hot, with a high of 86°F30°C and morning low of 67°F20°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 14% chance of drizzle around midday. Humid. Saturday Night: Partly cloudy, with a low around 68°F20°C. Light wind from the SSW around 5 mph8 km/h. 16% chance of drizzle in the evening.
Clear	High 82°F28°C	Low 67°F19°C	Precip 0.03 in0.7 mm7%	Cloud 33%	Wind N 6 mph10 km/h	Sunday: Partly cloudy and warm, with a high of 82°F28°C and morning low of 67°F19°C. Breezy from the N at 7 mph11 km/h. Sunday Night: Mostly clear, with a low around 69°F20°C. Light wind from the N around 6 mph9 km/h.
Drizzle	High 87°F30°C	Low 64°F18°C	Precip 0.04 in0.9 mm10%	Cloud 36%	Wind SE 10 mph16 km/h	Monday: Partly cloudy and hot, with a high of 87°F30°C and morning low of 64°F18°C. Breezy from the SE at 10 to 12 mph16 to 19 km/h. 10% chance of drizzle in the morning. Monday Night: Partly cloudy, with a low around 65°F18°C. Breezy from the SE at 9 to 13 mph15 to 20 km/h.
Drizzle	High 90°F32°CFeels 94°F34°C	Low 73°F23°C	Precip 0.05 in1.2 mm17%	Cloud 41%	Wind SSW 10 mph16 km/h	Tuesday: Partly cloudy and hot, with a high of 90°F32°C and morning low of 73°F23°C. Breezy from the SW at 10 to 11 mph16 to 17 km/h. 11% chance of drizzle in the afternoon. Humid. Tuesday Night: Partly cloudy, with a low around 75°F24°C. Breezy from the S at 9 to 13 mph15 to 20 km/h. 17% chance of drizzle in the evening.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	87°F31°C Feels 91°F33°C	75°F24°C	0.03 in0.8 mm· 33%	53%	Drizzle	WSW 6 mph10 km/h
DayPartly cloudy and hot, with a high of 87°F31°C and morning low of 75°F24°C. Light wind from the W around 6 mph9 km/h. 12% chance of drizzle. Humid. NightMostly cloudy, with a low around 75°F24°C. Breezy from the SSW at 6 to 8 mph10 to 14 km/h. 33% chance of drizzle in the evening.
	ThursdaySep 10	76°F24°C	69°F20°C	0.91 in23 mm· 97%	93%	Rain	NW 4 mph6 km/h
DayOvercast and warm, with a high of 76°F24°C. Light wind from the WNW around 4 mph6 km/h. 97% chance of rain throughout the day. Humid. NightOvercast, with a low around 69°F20°C. Light wind from the NNE around 3 mph5 km/h. 95% chance of rain throughout the night.
	FridaySep 11	82°F28°C	65°F18°C	0.05 in1.2 mm· 19%	54%	Drizzle	ESE 5 mph8 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 65°F18°C. Light wind from the ESE around 5 mph9 km/h. 19% chance of drizzle throughout the day. NightPartly cloudy, with a low around 65°F19°C. Light wind from the E around 5 mph8 km/h. 10% chance of drizzle overnight.
	SaturdaySep 12	86°F30°C Feels 90°F32°C	67°F20°C	0.04 in0.9 mm· 16%	47%	Drizzle	SW 6 mph9 km/h
DayMostly cloudy and hot, with a high of 86°F30°C and morning low of 67°F20°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 14% chance of drizzle around midday. Humid. NightPartly cloudy, with a low around 68°F20°C. Light wind from the SSW around 5 mph8 km/h. 16% chance of drizzle in the evening.
	SundaySep 13	82°F28°C	67°F19°C	0.03 in0.7 mm· 7%	33%	Clear	N 6 mph10 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 67°F19°C. Breezy from the N at 7 mph11 km/h. NightMostly clear, with a low around 69°F20°C. Light wind from the N around 6 mph9 km/h.
	MondaySep 14	87°F30°C	64°F18°C	0.04 in0.9 mm· 10%	36%	Drizzle	SE 10 mph16 km/h
DayPartly cloudy and hot, with a high of 87°F30°C and morning low of 64°F18°C. Breezy from the SE at 10 to 12 mph16 to 19 km/h. 10% chance of drizzle in the morning. NightPartly cloudy, with a low around 65°F18°C. Breezy from the SE at 9 to 13 mph15 to 20 km/h.
	TuesdaySep 15	90°F32°C Feels 94°F34°C	73°F23°C	0.05 in1.2 mm· 17%	41%	Drizzle	SSW 10 mph16 km/h
DayPartly cloudy and hot, with a high of 90°F32°C and morning low of 73°F23°C. Breezy from the SW at 10 to 11 mph16 to 17 km/h. 11% chance of drizzle in the afternoon. Humid. NightPartly cloudy, with a low around 75°F24°C. Breezy from the S at 9 to 13 mph15 to 20 km/h. 17% chance of drizzle in the evening.
	WednesdaySep 16	88°F31°C Feels 91°F33°C	71°F22°C	0.13 in3.2 mm· 25%	56%	Showers	SSE 7 mph11 km/h
DayMostly cloudy and hot, with a high of 88°F31°C and morning low of 71°F22°C. Breezy from the S at 7 mph11 km/h. 25% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 73°F23°C. Breezy from the SE at 7 to 8 mph11 to 13 km/h. 23% chance of showers throughout the night.
	ThursdaySep 17	88°F31°C Feels 91°F33°C	73°F23°C	0.13 in3.4 mm· 18%	38%	Showers	SSW 9 mph15 km/h
DayPartly cloudy and hot, with a high of 88°F31°C and morning low of 73°F23°C. Breezy from the SSW at 10 to 11 mph16 to 17 km/h. 17% chance of showers throughout the day. Humid. NightPartly cloudy, with a low around 74°F23°C. Breezy from the S at 8 to 9 mph14 to 14 km/h. 18% chance of showers throughout the night.
	FridaySep 18	82°F28°C	68°F20°C	0.13 in3.4 mm· 19%	43%	Showers	WSW 9 mph14 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 68°F20°C. Breezy from the WSW at 9 to 10 mph15 to 16 km/h. 19% chance of drizzle throughout the day. NightPartly cloudy, with a low around 69°F20°C. Breezy from the WSW at 8 to 9 mph13 to 15 km/h. 17% chance of showers throughout the night.
	SaturdaySep 19	76°F25°C	61°F16°C	0.17 in4.3 mm· 22%	50%	Showers	NW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 76°F25°C and morning low of 61°F16°C. Breezy from the NW at 8 to 9 mph13 to 14 km/h. 22% chance of showers throughout the day. NightPartly cloudy, with a low around 63°F17°C. Breezy from the NW at 7 to 8 mph12 to 12 km/h. 18% chance of showers throughout the night.
	SundaySep 20	73°F23°C	57°F14°C	0.11 in2.8 mm· 15%	52%	Showers	NNE 8 mph13 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 57°F14°C. Breezy from the NNE at 8 to 9 mph14 to 14 km/h. 14% chance of drizzle throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the NNE at 7 to 8 mph12 to 12 km/h. 15% chance of showers throughout the night.
	MondaySep 21	73°F23°C	54°F12°C	0.07 in1.8 mm· 11%	53%	Drizzle	NE 8 mph13 km/h
DayMostly cloudy and warm, with a high of 73°F23°C and morning low of 54°F12°C. Breezy from the NE at 8 to 9 mph14 to 14 km/h. 11% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 56°F14°C. Breezy from the ENE at 7 to 8 mph12 to 13 km/h. 10% chance of drizzle throughout the night.
	TuesdaySep 22	74°F23°C	55°F13°C	0.09 in2.4 mm· 15%	56%	Drizzle	E 7 mph12 km/h
DayMostly cloudy and warm, with a high of 74°F23°C and morning low of 55°F13°C. Breezy from the E at 8 mph12 km/h. 15% chance of drizzle throughout the day. NightMostly cloudy, with a low around 57°F14°C. Breezy from the E at 7 mph11 km/h. 15% chance of drizzle throughout the night.
	WednesdaySep 23	75°F24°C	57°F14°C	0.07 in1.8 mm· 15%	53%	Drizzle	SE 7 mph12 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 57°F14°C. Breezy from the SSE at 8 mph12 km/h. 15% chance of drizzle throughout the day. NightMostly cloudy, with a low around 58°F15°C. Breezy from the ESE at 7 mph11 km/h. 11% chance of drizzle throughout the night.

Nearby Cities

Springfield37 mi59 km Mattoon40 mi64 km Champaign42 mi68 km Urbana44 mi70 km Bloomington45 mi72 km Normal47 mi75 km

About This Forecast

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Coordinates: 39.8403°N, 88.9548°W·Elevation: 205m·Timezone: America/Chicago·Population: 73,254