Current Conditions

Frankfort, Illinois

78°F26°C

Light Rain

Wind

ESE 2 mph4 km/h

Humidity

76%

Cloud Cover

100%

As of Thursday, August 13, 2026 at 1:10 PM CDT

Today's Outlook

Day

Overcast and warm, with a high of 78°F26°C and morning low of 71°F21°C. Breezy from the ESE at 4 to 7 mph7 to 11 km/h. 61% chance of light rain in the afternoon. Heavy, humid air.

Night

Overcast, with a low around 74°F23°C. Light wind from the ENE around 5 mph8 km/h. 78% chance of light rain throughout the night.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Light Rain	High 78°F26°C	Low 71°F21°C	Precip 0.16 in4 mm78%	Cloud 98%	Wind E 5 mph7 km/h	Thursday: Overcast and warm, with a high of 78°F26°C and morning low of 71°F21°C. Breezy from the ESE at 4 to 7 mph7 to 11 km/h. 61% chance of light rain in the afternoon. Heavy, humid air. Thursday Night: Overcast, with a low around 74°F23°C. Light wind from the ENE around 5 mph8 km/h. 78% chance of light rain throughout the night.
Rain	High 78°F26°C	Low 70°F21°C	Precip 0.89 in22.7 mm97%	Cloud 97%	Wind E 5 mph8 km/h	Friday: Overcast and warm, with a high of 78°F26°C and morning low of 70°F21°C. Light wind from the E around 5 mph8 km/h. 97% chance of rain throughout the day. Humid. Friday Night: Overcast, with a low around 71°F22°C. Light wind from the ENE around 5 mph9 km/h. 93% chance of rain throughout the night.
Rain	High 79°F26°C	Low 72°F22°C	Precip 0.61 in15.6 mm73%	Cloud 92%	Wind SSE 6 mph9 km/h	Saturday: Overcast and warm, with a high of 79°F26°C and morning low of 72°F22°C. Light wind from the S around 6 mph10 km/h. 73% 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. 45% chance of light rain throughout the night.
Light Rain	High 85°F30°CFeels 93°F34°C	Low 75°F24°C	Precip 0.31 in7.8 mm54%	Cloud 83%	Wind W 7 mph11 km/h	Sunday: Overcast and warm, with a high of 85°F30°C and morning low of 75°F24°C — feels like 93°F34°C. Breezy from the W at 7 to 8 mph12 to 13 km/h. 43% chance of light rain throughout the day. Heavy, humid air. Sunday Night: Overcast, with a low around 75°F24°C. Light wind from the W around 6 mph9 km/h. 54% chance of light rain throughout the night.
Showers	High 78°F26°C	Low 68°F20°C	Precip 0.09 in2.3 mm23%	Cloud 62%	Wind N 6 mph9 km/h	Monday: Mostly cloudy and warm, with a high of 78°F26°C and morning low of 69°F21°C. Breezy from the N at 7 mph10 km/h. 22% chance of drizzle throughout the day. Monday Night: Mostly cloudy, with a low around 68°F20°C. Breezy from the NNE at 5 to 7 mph8 to 11 km/h. 23% chance of showers overnight.
Partly Cloudy	High 82°F28°C	Low 63°F17°C	Precip 0 in0.1 mm4%	Cloud 51%	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 12 km/h.
Light Rain	High 81°F27°CFeels 84°F29°C	Low 70°F21°C	Precip 0.19 in4.9 mm41%	Cloud 73%	Wind SW 8 mph13 km/h	Wednesday: Mostly cloudy and warm, with a high of 81°F27°C and morning low of 70°F21°C. Breezy from the SW at 9 mph14 km/h. 41% chance of light rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 70°F21°C. Breezy from the SSW at 8 mph13 km/h. 36% chance of light rain throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	ThursdayAug 13	78°F26°C	71°F21°C	0.16 in4 mm· 78%	98%	Light Rain	E 5 mph7 km/h
DayOvercast and warm, with a high of 78°F26°C and morning low of 71°F21°C. Breezy from the ESE at 4 to 7 mph7 to 11 km/h. 61% chance of light rain in the afternoon. Heavy, humid air. NightOvercast, with a low around 74°F23°C. Light wind from the ENE around 5 mph8 km/h. 78% chance of light rain throughout the night.
	FridayAug 14	78°F26°C	70°F21°C	0.89 in22.7 mm· 97%	97%	Rain	E 5 mph8 km/h
DayOvercast and warm, with a high of 78°F26°C and morning low of 70°F21°C. Light wind from the E around 5 mph8 km/h. 97% chance of rain throughout the day. Humid. NightOvercast, with a low around 71°F22°C. Light wind from the ENE around 5 mph9 km/h. 93% chance of rain throughout the night.
	SaturdayAug 15	79°F26°C	72°F22°C	0.61 in15.6 mm· 73%	92%	Rain	SSE 6 mph9 km/h
DayOvercast and warm, with a high of 79°F26°C and morning low of 72°F22°C. Light wind from the S around 6 mph10 km/h. 73% 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. 45% chance of light rain throughout the night.
	SundayAug 16	85°F30°C Feels 93°F34°C	75°F24°C	0.31 in7.8 mm· 54%	83%	Light Rain	W 7 mph11 km/h
DayOvercast and warm, with a high of 85°F30°C and morning low of 75°F24°C — feels like 93°F34°C. Breezy from the W at 7 to 8 mph12 to 13 km/h. 43% chance of light rain throughout the day. Heavy, humid air. NightOvercast, with a low around 75°F24°C. Light wind from the W around 6 mph9 km/h. 54% chance of light rain throughout the night.
	MondayAug 17	78°F26°C	68°F20°C	0.09 in2.3 mm· 23%	62%	Showers	N 6 mph9 km/h
DayMostly cloudy and warm, with a high of 78°F26°C and morning low of 69°F21°C. Breezy from the N at 7 mph10 km/h. 22% chance of drizzle throughout the day. NightMostly cloudy, with a low around 68°F20°C. Breezy from the NNE at 5 to 7 mph8 to 11 km/h. 23% chance of showers overnight.
	TuesdayAug 18	82°F28°C	63°F17°C	0 in0.1 mm· 4%	51%	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 12 km/h.
	WednesdayAug 19	81°F27°C Feels 84°F29°C	70°F21°C	0.19 in4.9 mm· 41%	73%	Light Rain	SW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 70°F21°C. Breezy from the SW at 9 mph14 km/h. 41% chance of light rain throughout the day. Humid. NightMostly cloudy, with a low around 70°F21°C. Breezy from the SSW at 8 mph13 km/h. 36% chance of light rain throughout the night.
	ThursdayAug 20	76°F25°C	65°F19°C	0.07 in1.8 mm· 13%	48%	Drizzle	N 7 mph11 km/h
DayMostly cloudy and warm, with a high of 76°F25°C and morning low of 65°F19°C. Breezy from the N at 7 to 8 mph12 to 13 km/h. 13% chance of drizzle throughout the day. NightPartly cloudy, with a low around 66°F19°C. Breezy from the N at 7 mph10 km/h. 12% chance of drizzle throughout the night.
	FridayAug 21	78°F25°C	62°F16°C	0.07 in1.7 mm· 12%	50%	Drizzle	ESE 6 mph9 km/h
DayMostly cloudy and warm, with a high of 78°F25°C and morning low of 62°F17°C. Light wind from the ESE around 6 mph9 km/h. 12% chance of drizzle throughout the day. NightPartly cloudy, with a low around 62°F16°C. Light wind from the E around 5 mph8 km/h. 11% chance of drizzle throughout the night.
	SaturdayAug 22	80°F27°C	64°F18°C	0.15 in3.8 mm· 24%	49%	Showers	SSE 6 mph9 km/h
DayMostly cloudy and warm, with a high of 80°F27°C and morning low of 65°F18°C. Light wind from the S around 6 mph10 km/h. 24% chance of showers throughout the day. NightPartly cloudy, with a low around 64°F18°C. Light wind from the SE around 5 mph9 km/h. 17% chance of showers throughout the night.
	SundayAug 23	82°F28°C	65°F18°C	0.04 in1 mm· 10%	40%	Drizzle	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 WSW at 7 to 8 mph11 to 13 km/h. 10% chance of drizzle in the morning. NightPartly cloudy, with a low around 65°F19°C. Light wind from the S around 6 mph9 km/h.
	MondayAug 24	83°F28°C	65°F18°C	0.02 in0.5 mm· 6%	38%	Clear	S 6 mph10 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 65°F18°C. Breezy from the SSW at 7 to 8 mph11 to 13 km/h. NightPartly cloudy, with a low around 66°F19°C. Light wind from the S around 6 mph10 km/h.
	TuesdayAug 25	84°F29°C	66°F19°C	0.04 in1 mm· 7%	44%	Partly Cloudy	SSE 6 mph10 km/h
DayPartly cloudy and warm, with a high of 84°F29°C and morning low of 66°F19°C. Breezy from the SSW at 7 mph11 km/h. NightPartly cloudy, with a low around 67°F19°C. Light wind from the SE around 6 mph10 km/h.
	WednesdayAug 26	83°F28°C	67°F19°C	0.07 in1.7 mm· 13%	48%	Drizzle	ESE 6 mph10 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 67°F19°C. Breezy from the SSE at 7 to 8 mph11 to 12 km/h. 13% chance of drizzle throughout the day. NightPartly cloudy, with a low around 67°F20°C. Light wind from the E around 6 mph10 km/h. 13% chance of drizzle throughout the night.
	ThursdayAug 27	81°F27°C	66°F19°C	0.08 in2.1 mm· 15%	48%	Showers	NE 7 mph10 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 66°F19°C. Breezy from the NE at 7 to 8 mph11 to 13 km/h. 11% chance of drizzle throughout the day. NightPartly cloudy, with a low around 67°F19°C. Light wind from the NE around 6 mph10 km/h. 15% chance of showers overnight.

Nearby Cities

Mokena3 mi5 km New Lenox6 mi10 km Tinley Park6 mi10 km Matteson7 mi11 km Country Club Hills8 mi13 km Homer Glen9 mi14 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: 41.4959°N, 87.8487°W·Elevation: 232m·Timezone: America/Chicago·Population: 18,653