Current Conditions

Romeoville, Illinois

76°F25°C

Rain

Wind

S 8 mph13 km/h

Humidity

61%

Cloud Cover

54%

As of Tuesday, September 8, 2026 at 9:12 PM CDT

Today's Outlook

Night

Mostly cloudy, with a low around 73°F23°C. Breezy from the SW at 6 to 8 mph10 to 13 km/h. 14% chance of drizzle before dawn.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 80°F27°C	Low 72°F22°C	Precip 0.2 in5.1 mm91%	Cloud 83%	Wind WSW 7 mph11 km/h	Wednesday: Overcast and warm, with a high of 80°F27°C and morning low of 72°F22°C. Breezy from the WSW at 7 to 8 mph12 to 13 km/h. 91% chance of rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 73°F23°C. Breezy from the SW at 6 to 8 mph10 to 13 km/h. 14% chance of drizzle before dawn.
Drizzle	High 77°F25°C	Low 65°F18°C	Precip 0.04 in1 mm15%	Cloud 78%	Wind NNE 5 mph8 km/h	Thursday: Overcast and warm, with a high of 77°F25°C and morning low of 68°F20°C. Light wind from the NNE around 5 mph8 km/h. 15% chance of drizzle throughout the day. Thursday Night: Mostly cloudy, with a low around 65°F18°C. Light wind from the N around 5 mph9 km/h. 14% chance of drizzle before dawn.
Clear	High 82°F28°C	Low 59°F15°C	Precip 0 in0.1 mm4%	Cloud 23%	Wind SE 5 mph8 km/h	Friday: Partly cloudy and warm, with a high of 82°F28°C and morning low of 59°F15°C. Light wind from the SE around 5 mph8 km/h. Friday Night: Mostly clear, with a low around 60°F15°C. Light wind from the ESE around 5 mph8 km/h.
Drizzle	High 86°F30°C	Low 65°F18°C	Precip 0.02 in0.6 mm17%	Cloud 44%	Wind SW 6 mph10 km/h	Saturday: Mostly cloudy and warm, with a high of 86°F30°C and morning low of 65°F18°C. Breezy from the SW at 7 to 9 mph12 to 15 km/h. 17% chance of drizzle in the afternoon. Humid. Saturday Night: Partly cloudy, with a low around 66°F19°C. Light wind from the SW around 5 mph9 km/h. 14% chance of drizzle in the evening.
Clear	High 78°F25°C	Low 63°F17°C	Precip 0.03 in0.8 mm8%	Cloud 34%	Wind N 6 mph10 km/h	Sunday: Partly cloudy and warm, with a high of 78°F25°C and morning low of 63°F17°C. Breezy from the N at 7 mph11 km/h. Sunday Night: Partly cloudy, with a low around 65°F18°C. Light wind from the NNE around 6 mph10 km/h.
Showers	High 82°F28°C	Low 61°F16°C	Precip 0.11 in2.8 mm19%	Cloud 54%	Wind SSE 9 mph15 km/h	Monday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 61°F16°C. Breezy from the SSE at 9 to 12 mph15 to 19 km/h. 19% chance of showers throughout the day. Monday Night: Partly cloudy, with a low around 62°F17°C. Breezy from the SSE at 9 to 13 mph15 to 20 km/h. 12% chance of drizzle throughout the night.
Showers	High 83°F28°C	Low 69°F21°C	Precip 0.11 in2.7 mm22%	Cloud 67%	Wind SW 9 mph15 km/h	Tuesday: Mostly cloudy and warm, with a high of 83°F28°C and morning low of 70°F21°C. Breezy from the WSW at 10 mph16 km/h. 18% chance of drizzle throughout the day. Tuesday Night: Mostly cloudy, with a low around 69°F21°C. Breezy from the SSW at 9 to 13 mph15 to 21 km/h. 22% chance of showers throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	80°F27°C	72°F22°C	0.2 in5.1 mm· 91%	83%	Rain	WSW 7 mph11 km/h
DayOvercast and warm, with a high of 80°F27°C and morning low of 72°F22°C. Breezy from the WSW at 7 to 8 mph12 to 13 km/h. 91% chance of rain throughout the day. Humid. NightMostly cloudy, with a low around 73°F23°C. Breezy from the SW at 6 to 8 mph10 to 13 km/h. 14% chance of drizzle before dawn.
	ThursdaySep 10	77°F25°C	65°F18°C	0.04 in1 mm· 15%	78%	Drizzle	NNE 5 mph8 km/h
DayOvercast and warm, with a high of 77°F25°C and morning low of 68°F20°C. Light wind from the NNE around 5 mph8 km/h. 15% chance of drizzle throughout the day. NightMostly cloudy, with a low around 65°F18°C. Light wind from the N around 5 mph9 km/h. 14% chance of drizzle before dawn.
	FridaySep 11	82°F28°C	59°F15°C	0 in0.1 mm· 4%	23%	Clear	SE 5 mph8 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 59°F15°C. Light wind from the SE around 5 mph8 km/h. NightMostly clear, with a low around 60°F15°C. Light wind from the ESE around 5 mph8 km/h.
	SaturdaySep 12	86°F30°C	65°F18°C	0.02 in0.6 mm· 17%	44%	Drizzle	SW 6 mph10 km/h
DayMostly cloudy and warm, with a high of 86°F30°C and morning low of 65°F18°C. Breezy from the SW at 7 to 9 mph12 to 15 km/h. 17% chance of drizzle in the afternoon. Humid. NightPartly cloudy, with a low around 66°F19°C. Light wind from the SW around 5 mph9 km/h. 14% chance of drizzle in the evening.
	SundaySep 13	78°F25°C	63°F17°C	0.03 in0.8 mm· 8%	34%	Clear	N 6 mph10 km/h
DayPartly cloudy and warm, with a high of 78°F25°C and morning low of 63°F17°C. Breezy from the N at 7 mph11 km/h. NightPartly cloudy, with a low around 65°F18°C. Light wind from the NNE around 6 mph10 km/h.
	MondaySep 14	82°F28°C	61°F16°C	0.11 in2.8 mm· 19%	54%	Showers	SSE 9 mph15 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 61°F16°C. Breezy from the SSE at 9 to 12 mph15 to 19 km/h. 19% chance of showers throughout the day. NightPartly cloudy, with a low around 62°F17°C. Breezy from the SSE at 9 to 13 mph15 to 20 km/h. 12% chance of drizzle throughout the night.
	TuesdaySep 15	83°F28°C	69°F21°C	0.11 in2.7 mm· 22%	67%	Showers	SW 9 mph15 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 70°F21°C. Breezy from the WSW at 10 mph16 km/h. 18% chance of drizzle throughout the day. NightMostly cloudy, with a low around 69°F21°C. Breezy from the SSW at 9 to 13 mph15 to 21 km/h. 22% chance of showers throughout the night.
	WednesdaySep 16	77°F25°C	63°F17°C	0.21 in5.3 mm· 32%	62%	Showers	ENE 6 mph10 km/h
DayMostly cloudy and warm, with a high of 77°F25°C and morning low of 63°F17°C. Breezy from the ENE at 6 to 7 mph10 to 11 km/h. 28% chance of showers throughout the day. NightMostly cloudy, with a low around 65°F18°C. Breezy from the ENE at 6 to 7 mph10 to 11 km/h. 32% chance of showers throughout the night.
	ThursdaySep 17	80°F27°C	67°F19°C	0.19 in4.7 mm· 29%	57%	Showers	SSW 8 mph14 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 67°F19°C. Breezy from the SW at 9 to 10 mph15 to 16 km/h. 29% chance of showers throughout the day. NightMostly cloudy, with a low around 67°F19°C. Breezy from the S at 8 mph12 km/h. 23% chance of showers throughout the night.
	FridaySep 18	74°F24°C	62°F17°C	0.15 in3.9 mm· 21%	53%	Showers	W 8 mph13 km/h
DayMostly cloudy and warm, with a high of 74°F24°C and morning low of 62°F17°C. Breezy from the W at 9 mph14 km/h. 21% chance of showers throughout the day. NightMostly cloudy, with a low around 63°F17°C. Breezy from the WNW at 8 mph12 km/h. 20% chance of showers throughout the night.
	SaturdaySep 19	71°F22°C	57°F14°C	0.15 in3.7 mm· 18%	51%	Showers	NW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 57°F14°C. Breezy from the NW at 8 to 9 mph13 to 14 km/h. 17% chance of drizzle throughout the day. NightPartly cloudy, with a low around 59°F15°C. Breezy from the NW at 7 mph11 km/h. 18% chance of showers throughout the night.
	SundaySep 20	70°F21°C	55°F13°C	0.1 in2.5 mm· 14%	51%	Drizzle	NNW 8 mph12 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 55°F13°C. Breezy from the NNW at 8 to 9 mph13 to 15 km/h. 14% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 56°F14°C. Breezy from the N at 7 mph11 km/h. 13% chance of drizzle throughout the night.
	MondaySep 21	69°F20°C	52°F11°C	0.11 in2.7 mm· 14%	51%	Showers	NE 7 mph12 km/h
DayMostly cloudy and warm, with a high of 69°F20°C and morning low of 52°F11°C. Breezy from the NE at 8 to 9 mph13 to 14 km/h. 13% chance of drizzle throughout the day. Dry air. NightPartly cloudy, with a low around 54°F12°C. Breezy from the NE at 7 mph11 km/h. 14% chance of showers throughout the night.
	TuesdaySep 22	70°F21°C	53°F12°C	0.09 in2.3 mm· 17%	55%	Drizzle	SE 8 mph12 km/h
DayMostly cloudy and warm, with a high of 70°F21°C and morning low of 53°F12°C. Breezy from the SE at 8 to 9 mph13 to 15 km/h. 16% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 54°F12°C. Breezy from the ESE at 7 mph11 km/h. 17% chance of drizzle throughout the night.
	WednesdaySep 23	71°F22°C	54°F12°C	0.08 in2.1 mm· 14%	56%	Drizzle	SE 8 mph12 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 54°F12°C. Breezy from the SE at 8 to 9 mph13 to 14 km/h. 14% chance of drizzle throughout the day. Dry air. NightMostly cloudy, with a low around 55°F13°C. Breezy from the SE at 7 mph11 km/h. 14% chance of drizzle throughout the night.

Nearby Cities

Bolingbrook4 mi6 km Lockport4 mi7 km Lemont5 mi8 km Plainfield6 mi10 km Crest Hill6 mi10 km Woodridge7 mi12 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: 41.6475°N, 88.0895°W·Elevation: 189m·Timezone: America/Chicago·Population: 39,719