Current Conditions

DeKalb, Illinois

74°F23°C

Rain

Wind

SW 6 mph10 km/h

Humidity

66%

Cloud Cover

97%

As of Tuesday, September 8, 2026 at 11:59 PM CDT

Today's Outlook

Night

Overcast, with a low around 72°F22°C. Breezy from the WSW at 7 to 8 mph11 to 12 km/h. 75% chance of light rain before dawn.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 80°F27°C	Low 71°F22°C	Precip 0.53 in13.4 mm100%	Cloud 88%	Wind WSW 8 mph12 km/h	Wednesday: Overcast and warm, with a high of 80°F27°C and morning low of 71°F22°C. Breezy from the WSW at 9 to 10 mph14 to 16 km/h. 100% chance of rain throughout the day. Humid. Wednesday Night: Overcast, with a low around 72°F22°C. Breezy from the WSW at 7 to 8 mph11 to 12 km/h. 75% chance of light rain before dawn.
Partly Cloudy	High 79°F26°C	Low 64°F18°C	Precip 0 in0 mm—	Cloud 69%	Wind N 5 mph8 km/h	Thursday: Overcast and warm, with a high of 79°F26°C and morning low of 64°F18°C. Light wind from the NNE around 5 mph8 km/h. Thursday Night: Mostly cloudy, with a low around 64°F18°C. Light wind from the NNW around 5 mph8 km/h.
Clear	High 82°F28°C	Low 56°F14°C	Precip 0 in0 mm—	Cloud 15%	Wind SSE 6 mph9 km/h	Friday: Mostly clear and warm, with a high of 82°F28°C and morning low of 56°F14°C. Breezy from the SSE at 6 to 7 mph10 to 11 km/h. Friday Night: Mostly clear, with a low around 57°F14°C. Breezy from the SE at 5 to 7 mph9 to 11 km/h.
Drizzle	High 84°F29°C	Low 64°F18°C	Precip 0.03 in0.8 mm14%	Cloud 48%	Wind SW 7 mph12 km/h	Saturday: Mostly cloudy and warm, with a high of 84°F29°C and morning low of 64°F18°C. Breezy from the SW at 9 to 10 mph14 to 17 km/h. 14% chance of drizzle in the afternoon. Humid. Saturday Night: Partly cloudy, with a low around 65°F18°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 14% chance of drizzle in the evening.
Drizzle	High 76°F25°C	Low 60°F16°C	Precip 0.03 in0.8 mm10%	Cloud 35%	Wind N 7 mph11 km/h	Sunday: Partly cloudy and warm, with a high of 76°F25°C and morning low of 60°F16°C. Breezy from the NNW at 8 mph12 km/h. 10% chance of drizzle in the afternoon. Sunday Night: Partly cloudy, with a low around 62°F17°C. Breezy from the N at 6 to 7 mph10 to 11 km/h.
Showers	High 79°F26°C	Low 58°F14°C	Precip 0.19 in4.8 mm31%	Cloud 54%	Wind SSE 10 mph17 km/h	Monday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 58°F14°C. Breezy from the SE at 11 to 14 mph17 to 22 km/h. 31% chance of showers throughout the day. Monday Night: Partly cloudy, with a low around 58°F15°C. Breezy from the SSE at 10 to 14 mph16 to 22 km/h. 17% chance of showers throughout the night.
Light Rain	High 83°F28°C	Low 70°F21°C	Precip 0.17 in4.3 mm33%	Cloud 71%	Wind SW 10 mph16 km/h	Tuesday: Mostly cloudy and warm, with a high of 83°F28°C and morning low of 70°F21°C. Breezy from the SW at 11 to 12 mph17 to 19 km/h. 24% chance of drizzle throughout the day. Tuesday Night: Mostly cloudy, with a low around 70°F21°C. Breezy from the SSW at 10 to 14 mph16 to 22 km/h. 33% chance of light rain throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	80°F27°C	71°F22°C	0.53 in13.4 mm· 100%	88%	Rain	WSW 8 mph12 km/h
DayOvercast and warm, with a high of 80°F27°C and morning low of 71°F22°C. Breezy from the WSW at 9 to 10 mph14 to 16 km/h. 100% chance of rain throughout the day. Humid. NightOvercast, with a low around 72°F22°C. Breezy from the WSW at 7 to 8 mph11 to 12 km/h. 75% chance of light rain before dawn.
	ThursdaySep 10	79°F26°C	64°F18°C	0 in0 mm· —	69%	Partly Cloudy	N 5 mph8 km/h
DayOvercast and warm, with a high of 79°F26°C and morning low of 64°F18°C. Light wind from the NNE around 5 mph8 km/h. NightMostly cloudy, with a low around 64°F18°C. Light wind from the NNW around 5 mph8 km/h.
	FridaySep 11	82°F28°C	56°F14°C	0 in0 mm· —	15%	Clear	SSE 6 mph9 km/h
DayMostly clear and warm, with a high of 82°F28°C and morning low of 56°F14°C. Breezy from the SSE at 6 to 7 mph10 to 11 km/h. NightMostly clear, with a low around 57°F14°C. Breezy from the SE at 5 to 7 mph9 to 11 km/h.
	SaturdaySep 12	84°F29°C	64°F18°C	0.03 in0.8 mm· 14%	48%	Drizzle	SW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 84°F29°C and morning low of 64°F18°C. Breezy from the SW at 9 to 10 mph14 to 17 km/h. 14% chance of drizzle in the afternoon. Humid. NightPartly cloudy, with a low around 65°F18°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. 14% chance of drizzle in the evening.
	SundaySep 13	76°F25°C	60°F16°C	0.03 in0.8 mm· 10%	35%	Drizzle	N 7 mph11 km/h
DayPartly cloudy and warm, with a high of 76°F25°C and morning low of 60°F16°C. Breezy from the NNW at 8 mph12 km/h. 10% chance of drizzle in the afternoon. NightPartly cloudy, with a low around 62°F17°C. Breezy from the N at 6 to 7 mph10 to 11 km/h.
	MondaySep 14	79°F26°C	58°F14°C	0.19 in4.8 mm· 31%	54%	Showers	SSE 10 mph17 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 58°F14°C. Breezy from the SE at 11 to 14 mph17 to 22 km/h. 31% chance of showers throughout the day. NightPartly cloudy, with a low around 58°F15°C. Breezy from the SSE at 10 to 14 mph16 to 22 km/h. 17% chance of showers throughout the night.
	TuesdaySep 15	83°F28°C	70°F21°C	0.17 in4.3 mm· 33%	71%	Light Rain	SW 10 mph16 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 70°F21°C. Breezy from the SW at 11 to 12 mph17 to 19 km/h. 24% chance of drizzle throughout the day. NightMostly cloudy, with a low around 70°F21°C. Breezy from the SSW at 10 to 14 mph16 to 22 km/h. 33% chance of light rain throughout the night.
	WednesdaySep 16	79°F26°C	64°F18°C	0.32 in8.2 mm· 40%	70%	Showers	E 7 mph11 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 64°F18°C. Breezy from the ESE at 7 mph11 km/h. 37% chance of light rain throughout the day. NightMostly cloudy, with a low around 66°F19°C. Breezy from the E at 7 to 8 mph11 to 12 km/h. 40% chance of showers throughout the night.
	ThursdaySep 17	83°F28°C	68°F20°C	0.25 in6.3 mm· 29%	55%	Showers	SSW 9 mph15 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 68°F20°C. Breezy from the SW at 10 to 11 mph16 to 18 km/h. 29% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 69°F20°C. Breezy from the S at 8 to 9 mph14 to 14 km/h. 26% chance of showers throughout the night.
	FridaySep 18	77°F25°C	64°F18°C	0.18 in4.5 mm· 21%	50%	Showers	WSW 9 mph15 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 64°F18°C. Breezy from the W at 10 mph16 km/h. 20% chance of drizzle throughout the day. NightPartly cloudy, with a low around 64°F18°C. Breezy from the WSW at 9 mph14 km/h. 21% chance of showers throughout the night.
	SaturdaySep 19	72°F22°C	57°F14°C	0.11 in2.7 mm· 16%	51%	Showers	WNW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 57°F14°C. Breezy from the WNW at 9 to 10 mph14 to 16 km/h. 16% chance of drizzle throughout the day. NightPartly cloudy, with a low around 60°F15°C. Breezy from the NW at 8 mph12 km/h. 16% chance of showers throughout the night.
	SundaySep 20	69°F21°C	53°F12°C	0.11 in2.8 mm· 15%	50%	Showers	N 8 mph13 km/h
DayMostly cloudy and warm, with a high of 69°F21°C and morning low of 53°F12°C. Breezy from the NNW at 8 to 9 mph14 to 14 km/h. 15% chance of showers throughout the day. Dry air. NightPartly cloudy, with a low around 55°F13°C. Breezy from the N at 7 to 8 mph12 to 12 km/h. 15% chance of showers throughout the night.
	MondaySep 21	69°F21°C	51°F11°C	0.09 in2.4 mm· 10%	51%	Drizzle	ENE 8 mph12 km/h
DayMostly cloudy and warm, with a high of 69°F21°C and morning low of 51°F11°C. Breezy from the NE at 8 to 9 mph13 to 14 km/h. 10% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 53°F12°C. Breezy from the ENE at 7 mph11 km/h. 10% chance of drizzle throughout the night.
	TuesdaySep 22	71°F21°C	52°F11°C	0.11 in2.7 mm· 15%	54%	Showers	ESE 7 mph12 km/h
DayMostly cloudy and warm, with a high of 71°F21°C and morning low of 52°F11°C. Breezy from the ESE at 8 mph12 km/h. 15% chance of showers throughout the day. Dry air. NightMostly cloudy, with a low around 54°F12°C. Breezy from the ESE at 7 mph11 km/h. 15% chance of drizzle throughout the night.
	WednesdaySep 23	72°F22°C	54°F12°C	0.09 in2.2 mm· 16%	52%	Drizzle	S 7 mph12 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 54°F12°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. 16% chance of drizzle throughout the day. NightMostly cloudy, with a low around 55°F13°C. Breezy from the SE at 7 mph11 km/h. 13% chance of drizzle throughout the night.

Nearby Cities

Sycamore5 mi8 km Wasco18 mi29 km St. Charles23 mi37 km Geneva23 mi37 km Batavia23 mi37 km Huntley23 mi38 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.

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Coordinates: 41.9295°N, 88.7504°W·Elevation: 268m·Timezone: America/Chicago·Population: 43,211