Current Conditions

Romeoville, Illinois

70°F21°C

Rain

Wind

E 3 mph5 km/h

Humidity

96%

Cloud Cover

58%

As of Thursday, August 13, 2026 at 3:35 AM CDT

Today's Outlook

Day

Overcast and warm, with a high of 78°F25°C and morning low of 71°F21°C. Breezy from the ESE at 5 to 7 mph8 to 11 km/h. 85% chance of light rain in the afternoon. Heavy, humid air.

Night

Mostly cloudy, with a low around 70°F21°C. Light wind from the E around 4 mph6 km/h. 90% chance of rain in the evening.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 78°F25°C	Low 70°F21°C	Precip 0.35 in9 mm90%	Cloud 85%	Wind ESE 4 mph7 km/h	Thursday: Overcast and warm, with a high of 78°F25°C and morning low of 71°F21°C. Breezy from the ESE at 5 to 7 mph8 to 11 km/h. 85% chance of light rain in the afternoon. Heavy, humid air. Thursday Night: Mostly cloudy, with a low around 70°F21°C. Light wind from the E around 4 mph6 km/h. 90% chance of rain in the evening.
Rain	High 79°F26°C	Low 71°F22°C	Precip 0.49 in12.5 mm79%	Cloud 96%	Wind E 5 mph8 km/h	Friday: Overcast and warm, with a high of 79°F26°C and morning low of 71°F22°C. Light wind from the E around 5 mph9 km/h. 79% chance of rain throughout the day. Heavy, humid air. Friday Night: Overcast, with a low around 72°F22°C. Light wind from the ENE around 5 mph8 km/h. 71% chance of rain throughout the night.
Rain	High 80°F27°C	Low 72°F22°C	Precip 0.67 in17 mm80%	Cloud 92%	Wind SSE 6 mph9 km/h	Saturday: Overcast and warm, with a high of 80°F27°C and morning low of 72°F22°C. Breezy from the S at 6 to 7 mph10 to 11 km/h. 80% chance of rain throughout the day. Heavy, humid air. Saturday Night: Overcast, with a low around 72°F22°C. Light wind from the SE around 5 mph8 km/h. 55% chance of light rain throughout the night.
Light Rain	High 84°F29°CFeels 91°F33°C	Low 74°F24°C	Precip 0.24 in6.1 mm53%	Cloud 82%	Wind W 7 mph11 km/h	Sunday: Overcast and warm, with a high of 84°F29°C and morning low of 75°F24°C — feels like 91°F33°C. Breezy from the WNW at 7 to 8 mph12 to 13 km/h. 41% chance of light rain throughout the day. Heavy, humid air. Sunday Night: Mostly cloudy, with a low around 74°F24°C. Light wind from the W around 6 mph9 km/h. 53% chance of light rain throughout the night.
Drizzle	High 79°F26°C	Low 68°F20°C	Precip 0.03 in0.8 mm21%	Cloud 57%	Wind NNE 6 mph9 km/h	Monday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 69°F20°C. Breezy from the N at 6 to 7 mph10 to 11 km/h. 21% chance of drizzle around midday. Monday Night: Partly cloudy, with a low around 68°F20°C. Light wind from the NNE around 5 mph8 km/h.
Partly Cloudy	High 82°F28°C	Low 63°F17°C	Precip 0.01 in0.2 mm3%	Cloud 53%	Wind SSW 5 mph9 km/h	Tuesday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 64°F18°C. Breezy from the SW at 6 to 8 mph9 to 12 km/h. Tuesday Night: Partly cloudy, with a low around 63°F17°C. Breezy from the SSW at 5 to 7 mph8 to 11 km/h.
Light Rain	High 83°F28°CFeels 87°F31°C	Low 70°F21°C	Precip 0.21 in5.3 mm34%	Cloud 73%	Wind SW 8 mph13 km/h	Wednesday: Mostly cloudy and warm, with a high of 83°F28°C and morning low of 70°F21°C. Breezy from the SW at 9 mph14 km/h. 34% chance of light rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 71°F22°C. Breezy from the SSW at 7 to 8 mph12 to 13 km/h. 25% chance of showers throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdayAug 13	78°F25°C	70°F21°C	0.35 in9 mm· 90%	85%	Rain	ESE 4 mph7 km/h
DayOvercast and warm, with a high of 78°F25°C and morning low of 71°F21°C. Breezy from the ESE at 5 to 7 mph8 to 11 km/h. 85% chance of light rain in the afternoon. Heavy, humid air. NightMostly cloudy, with a low around 70°F21°C. Light wind from the E around 4 mph6 km/h. 90% chance of rain in the evening.
	FridayAug 14	79°F26°C	71°F22°C	0.49 in12.5 mm· 79%	96%	Rain	E 5 mph8 km/h
DayOvercast and warm, with a high of 79°F26°C and morning low of 71°F22°C. Light wind from the E around 5 mph9 km/h. 79% chance of rain throughout the day. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the ENE around 5 mph8 km/h. 71% chance of rain throughout the night.
	SaturdayAug 15	80°F27°C	72°F22°C	0.67 in17 mm· 80%	92%	Rain	SSE 6 mph9 km/h
DayOvercast and warm, with a high of 80°F27°C and morning low of 72°F22°C. Breezy from the S at 6 to 7 mph10 to 11 km/h. 80% chance of rain throughout the day. Heavy, humid air. NightOvercast, with a low around 72°F22°C. Light wind from the SE around 5 mph8 km/h. 55% chance of light rain throughout the night.
	SundayAug 16	84°F29°C Feels 91°F33°C	74°F24°C	0.24 in6.1 mm· 53%	82%	Light Rain	W 7 mph11 km/h
DayOvercast and warm, with a high of 84°F29°C and morning low of 75°F24°C — feels like 91°F33°C. Breezy from the WNW at 7 to 8 mph12 to 13 km/h. 41% chance of light rain throughout the day. Heavy, humid air. NightMostly cloudy, with a low around 74°F24°C. Light wind from the W around 6 mph9 km/h. 53% chance of light rain throughout the night.
	MondayAug 17	79°F26°C	68°F20°C	0.03 in0.8 mm· 21%	57%	Drizzle	NNE 6 mph9 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 69°F20°C. Breezy from the N at 6 to 7 mph10 to 11 km/h. 21% chance of drizzle around midday. NightPartly cloudy, with a low around 68°F20°C. Light wind from the NNE around 5 mph8 km/h.
	TuesdayAug 18	82°F28°C	63°F17°C	0.01 in0.2 mm· 3%	53%	Partly Cloudy	SSW 5 mph9 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 64°F18°C. Breezy from the SW at 6 to 8 mph9 to 12 km/h. NightPartly cloudy, with a low around 63°F17°C. Breezy from the SSW at 5 to 7 mph8 to 11 km/h.
	WednesdayAug 19	83°F28°C Feels 87°F31°C	70°F21°C	0.21 in5.3 mm· 34%	73%	Light Rain	SW 8 mph13 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 9 mph14 km/h. 34% chance of light rain throughout the day. Humid. NightMostly cloudy, with a low around 71°F22°C. Breezy from the SSW at 7 to 8 mph12 to 13 km/h. 25% chance of showers throughout the night.
	ThursdayAug 20	78°F26°C	67°F20°C	0.11 in2.8 mm· 15%	52%	Showers	N 7 mph11 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 67°F20°C. Breezy from the NNW at 7 to 8 mph12 to 12 km/h. 15% chance of drizzle throughout the day. NightPartly cloudy, with a low around 68°F20°C. Breezy from the N at 6 to 7 mph10 to 11 km/h. 15% chance of showers throughout the night.
	FridayAug 21	78°F25°C	63°F17°C	0.11 in2.7 mm· 14%	47%	Showers	NE 6 mph9 km/h
DayMostly cloudy and warm, with a high of 78°F25°C and morning low of 63°F17°C. Breezy from the NE at 6 to 7 mph10 to 11 km/h. 14% chance of drizzle throughout the day. NightPartly cloudy, with a low around 64°F18°C. Light wind from the ENE around 5 mph8 km/h. 13% chance of showers throughout the night.
	SaturdayAug 22	80°F27°C	63°F17°C	0.05 in1.2 mm· 10%	40%	Drizzle	SW 6 mph9 km/h
DayPartly cloudy and warm, with a high of 80°F27°C and morning low of 63°F17°C. Light wind from the WNW around 6 mph10 km/h. NightPartly cloudy, with a low around 63°F17°C. Light wind from the SE around 5 mph8 km/h. 10% chance of drizzle throughout the night.
	SundayAug 23	82°F28°C	64°F18°C	0.04 in1.1 mm· 7%	35%	Clear	SSW 6 mph9 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 64°F18°C. Breezy from the SW at 6 to 7 mph10 to 11 km/h. NightPartly cloudy, with a low around 64°F18°C. Light wind from the S around 5 mph8 km/h.
	MondayAug 24	82°F28°C	65°F18°C	0.04 in1.1 mm· 9%	39%	Clear	SSW 6 mph10 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 65°F18°C. Breezy from the SW at 6 to 7 mph10 to 12 km/h. NightPartly cloudy, with a low around 65°F19°C. Light wind from the S around 6 mph9 km/h.
	TuesdayAug 25	83°F28°C	65°F19°C	0.04 in1 mm· 9%	39%	Clear	SSW 6 mph10 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 65°F19°C. Breezy from the SW at 7 mph11 km/h. NightPartly cloudy, with a low around 66°F19°C. Light wind from the SSE around 6 mph9 km/h.
	WednesdayAug 26	83°F28°C	66°F19°C	0.06 in1.4 mm· 11%	42%	Drizzle	W 6 mph10 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 66°F19°C. Breezy from the W at 7 mph11 km/h. 11% chance of drizzle throughout the day. NightPartly cloudy, with a low around 67°F19°C. Light wind from the E around 6 mph10 km/h.
	ThursdayAug 27	82°F28°C	66°F19°C	0.04 in1.1 mm· 9%	44%	Partly Cloudy	NNE 6 mph10 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 66°F19°C. Breezy from the N at 7 to 8 mph11 to 13 km/h. NightPartly cloudy, with a low around 66°F19°C. Light wind from the NE around 6 mph10 km/h.

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