Current Conditions

Jacksonville, Illinois

79°F26°C

Showers

Wind

S 9 mph15 km/h

Humidity

53%

Cloud Cover

29%

As of Wednesday, September 9, 2026 at 12:09 AM CDT

Today's Outlook

Day

Mostly cloudy and hot, with a high of 87°F31°C and morning low of 75°F24°C. Light wind from the WNW around 4 mph7 km/h. 24% chance of drizzle in the afternoon. Humid.

Night

Mostly cloudy, with a low around 75°F24°C. Breezy from the S at 6 to 9 mph10 to 15 km/h. 58% chance of showers in the evening.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Showers	High 87°F31°CFeels 90°F32°C	Low 75°F24°C	Precip 0.08 in2.1 mm58%	Cloud 53%	Wind SW 5 mph8 km/h	Wednesday: Mostly cloudy and hot, with a high of 87°F31°C and morning low of 75°F24°C. Light wind from the WNW around 4 mph7 km/h. 24% chance of drizzle in the afternoon. Humid. Wednesday Night: Mostly cloudy, with a low around 75°F24°C. Breezy from the S at 6 to 9 mph10 to 15 km/h. 58% chance of showers in the evening.
Rain	High 77°F25°C	Low 69°F21°C	Precip 0.97 in24.7 mm98%	Cloud 92%	Wind NW 4 mph6 km/h	Thursday: Overcast and warm, with a high of 77°F25°C and morning low of 71°F22°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°F21°C. Light wind from the NE around 3 mph5 km/h. 98% chance of rain throughout the night.
Drizzle	High 83°F28°C	Low 65°F18°C	Precip 0.03 in0.7 mm21%	Cloud 45%	Wind ESE 5 mph7 km/h	Friday: Mostly cloudy and warm, with a high of 83°F28°C and morning low of 65°F18°C. Light wind from the ESE around 5 mph8 km/h. 21% chance of drizzle around midday. Humid. Friday Night: Partly cloudy, with a low around 65°F19°C. Light wind from the ESE around 4 mph7 km/h.
Drizzle	High 86°F30°CFeels 90°F32°C	Low 68°F20°C	Precip 0.04 in1 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 68°F20°C. Light wind from the SW around 6 mph10 km/h. 16% chance of drizzle throughout the day. Humid. Saturday Night: Partly cloudy, with a low around 68°F20°C. Light wind from the S around 5 mph8 km/h. 13% chance of drizzle in the evening.
Clear	High 82°F28°C	Low 66°F19°C	Precip 0.04 in0.9 mm9%	Cloud 35%	Wind NNE 6 mph9 km/h	Sunday: Partly cloudy and warm, with a high of 82°F28°C and morning low of 66°F19°C. Light wind from the N around 6 mph10 km/h. Sunday Night: Partly cloudy, with a low around 69°F20°C. Light wind from the NNE around 6 mph9 km/h.
Drizzle	High 89°F32°C	Low 66°F19°C	Precip 0.04 in1 mm11%	Cloud 32%	Wind SSE 10 mph16 km/h	Monday: Partly cloudy and hot, with a high of 89°F32°C and morning low of 66°F19°C. Breezy from the SSE at 10 to 12 mph16 to 19 km/h. 10% chance of drizzle in the morning. Monday Night: Partly cloudy, with a low around 67°F19°C. Breezy from the SSE at 9 to 13 mph15 to 20 km/h. 11% chance of drizzle overnight.
Showers	High 90°F32°CFeels 93°F34°C	Low 74°F23°C	Precip 0.07 in1.7 mm21%	Cloud 45%	Wind SSW 9 mph15 km/h	Tuesday: Partly cloudy and hot, with a high of 90°F32°C and morning low of 74°F23°C. Breezy from the SW at 9 mph14 km/h. 12% chance of drizzle in the afternoon. Humid. Tuesday Night: Mostly cloudy, with a low around 76°F24°C. Breezy from the S at 9 to 12 mph15 to 20 km/h. 21% chance of showers throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	87°F31°C Feels 90°F32°C	75°F24°C	0.08 in2.1 mm· 58%	53%	Showers	SW 5 mph8 km/h
DayMostly cloudy and hot, with a high of 87°F31°C and morning low of 75°F24°C. Light wind from the WNW around 4 mph7 km/h. 24% chance of drizzle in the afternoon. Humid. NightMostly cloudy, with a low around 75°F24°C. Breezy from the S at 6 to 9 mph10 to 15 km/h. 58% chance of showers in the evening.
	ThursdaySep 10	77°F25°C	69°F21°C	0.97 in24.7 mm· 98%	92%	Rain	NW 4 mph6 km/h
DayOvercast and warm, with a high of 77°F25°C and morning low of 71°F22°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°F21°C. Light wind from the NE around 3 mph5 km/h. 98% chance of rain throughout the night.
	FridaySep 11	83°F28°C	65°F18°C	0.03 in0.7 mm· 21%	45%	Drizzle	ESE 5 mph7 km/h
DayMostly cloudy and warm, with a high of 83°F28°C and morning low of 65°F18°C. Light wind from the ESE around 5 mph8 km/h. 21% chance of drizzle around midday. Humid. NightPartly cloudy, with a low around 65°F19°C. Light wind from the ESE around 4 mph7 km/h.
	SaturdaySep 12	86°F30°C Feels 90°F32°C	68°F20°C	0.04 in1 mm· 16%	47%	Drizzle	SW 6 mph9 km/h
DayMostly cloudy and hot, with a high of 86°F30°C and morning low of 68°F20°C. Light wind from the SW around 6 mph10 km/h. 16% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 68°F20°C. Light wind from the S around 5 mph8 km/h. 13% chance of drizzle in the evening.
	SundaySep 13	82°F28°C	66°F19°C	0.04 in0.9 mm· 9%	35%	Clear	NNE 6 mph9 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 66°F19°C. Light wind from the N around 6 mph10 km/h. NightPartly cloudy, with a low around 69°F20°C. Light wind from the NNE around 6 mph9 km/h.
	MondaySep 14	89°F32°C	66°F19°C	0.04 in1 mm· 11%	32%	Drizzle	SSE 10 mph16 km/h
DayPartly cloudy and hot, with a high of 89°F32°C and morning low of 66°F19°C. Breezy from the SSE at 10 to 12 mph16 to 19 km/h. 10% chance of drizzle in the morning. NightPartly cloudy, with a low around 67°F19°C. Breezy from the SSE at 9 to 13 mph15 to 20 km/h. 11% chance of drizzle overnight.
	TuesdaySep 15	90°F32°C Feels 93°F34°C	74°F23°C	0.07 in1.7 mm· 21%	45%	Showers	SSW 9 mph15 km/h
DayPartly cloudy and hot, with a high of 90°F32°C and morning low of 74°F23°C. Breezy from the SW at 9 mph14 km/h. 12% chance of drizzle in the afternoon. Humid. NightMostly cloudy, with a low around 76°F24°C. Breezy from the S at 9 to 12 mph15 to 20 km/h. 21% chance of showers throughout the night.
	WednesdaySep 16	87°F31°C Feels 91°F33°C	71°F22°C	0.16 in4 mm· 32%	58%	Showers	SE 7 mph11 km/h
DayMostly cloudy and hot, with a high of 87°F31°C and morning low of 71°F22°C. Breezy from the SSE at 6 to 7 mph10 to 12 km/h. 29% 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. 32% chance of showers throughout the night.
	ThursdaySep 17	88°F31°C Feels 91°F33°C	73°F23°C	0.15 in3.8 mm· 20%	39%	Showers	SSW 9 mph14 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 9 to 10 mph15 to 16 km/h. 16% chance of showers throughout the day. Humid. NightPartly cloudy, with a low around 75°F24°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. 20% chance of showers throughout the night.
	FridaySep 18	81°F27°C	68°F20°C	0.14 in3.6 mm· 22%	45%	Showers	WSW 8 mph13 km/h
DayPartly cloudy and warm, with a high of 81°F27°C and morning low of 68°F20°C. Breezy from the WSW at 9 mph14 km/h. 16% chance of drizzle throughout the day. NightPartly cloudy, with a low around 68°F20°C. Breezy from the WSW at 8 to 9 mph12 to 14 km/h. 22% chance of showers throughout the night.
	SaturdaySep 19	76°F24°C	61°F16°C	0.14 in3.6 mm· 22%	50%	Showers	NW 7 mph12 km/h
DayMostly cloudy and warm, with a high of 76°F24°C and morning low of 61°F16°C. Breezy from the NW at 8 mph12 km/h. 22% chance of showers throughout the day. NightPartly cloudy, with a low around 63°F17°C. Breezy from the NNW at 7 mph11 km/h. 19% chance of showers throughout the night.
	SundaySep 20	73°F23°C	57°F14°C	0.11 in2.7 mm· 14%	51%	Showers	NNE 7 mph12 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 mph12 km/h. 14% chance of drizzle throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the NNE at 7 mph11 km/h. 11% chance of showers throughout the night.
	MondaySep 21	73°F23°C	54°F12°C	0.07 in1.8 mm· 12%	53%	Drizzle	NE 7 mph11 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 mph12 km/h. 12% chance of drizzle throughout the day. NightMostly cloudy, with a low around 57°F14°C. Breezy from the NE at 7 mph11 km/h. 12% chance of drizzle throughout the night.
	TuesdaySep 22	74°F23°C	55°F13°C	0.1 in2.5 mm· 17%	56%	Drizzle	E 7 mph10 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 7 mph11 km/h. 17% chance of drizzle throughout the day. NightMostly cloudy, with a low around 57°F14°C. Light wind from the E around 6 mph10 km/h. 14% chance of drizzle throughout the night.
	WednesdaySep 23	76°F24°C	57°F14°C	0.09 in2.3 mm· 15%	53%	Showers	SE 7 mph11 km/h
DayMostly cloudy and warm, with a high of 76°F24°C and morning low of 57°F14°C. Breezy from the SSE at 7 to 8 mph11 to 12 km/h. 15% chance of showers throughout the day. NightMostly cloudy, with a low around 58°F15°C. Light wind from the SE around 6 mph10 km/h. 12% chance of drizzle throughout the night.

Nearby Cities

Springfield31 mi51 km Godfrey54 mi87 km Macomb55 mi89 km Upper Alton57 mi92 km Alton58 mi94 km Hannibal60 mi97 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: 39.7339°N, 90.2290°W·Elevation: 186m·Timezone: America/Chicago·Population: 19,103