Current Conditions

Jacksonville, Illinois

92°F33°C

Hot

Feels like98°F37°C

Wind

S 4 mph7 km/h

Humidity

50%

Cloud Cover

24%

As of Wednesday, September 2, 2026 at 5:54 PM CDT

Today's Outlook

Day

Mostly clear and hot, with a high of 98°F37°C — feels like 104°F40°C. Breezy from the SW at 8 mph12 km/h. Heat risk in the afternoon.

Night

Mostly clear, with a low around 84°F29°C. Light wind from the S around 5 mph9 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Hot	High 98°F37°CFeels 105°F40°C	Low 84°F29°CFeels 88°F31°C	Precip 0 in0 mm—	Cloud 22%	Wind SSW 6 mph10 km/h	Wednesday: Mostly clear and hot, with a high of 98°F37°C — feels like 104°F40°C. Breezy from the SW at 8 mph12 km/h. Heat risk in the afternoon. Wednesday Night: Mostly clear, with a low around 84°F29°C. Light wind from the S around 5 mph9 km/h.
Hot	High 98°F37°CFeels 103°F39°C	Low 78°F25°C	Precip 0 in0 mm—	Cloud 11%	Wind SSW 7 mph11 km/h	Thursday: Mostly clear and hot, with a high of 98°F37°C and morning low of 78°F25°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. Heat risk in the afternoon. Thursday Night: Mostly clear, with a low around 80°F27°C. Breezy from the S at 7 to 8 mph11 to 13 km/h.
Hot	High 98°F37°CFeels 103°F39°C	Low 77°F25°C	Precip 0 in0 mm—	Cloud 14%	Wind SSW 5 mph9 km/h	Friday: Mostly clear and hot, with a high of 98°F37°C and morning low of 77°F25°C. Light wind from the SW around 5 mph8 km/h. Heat risk in the afternoon. Friday Night: Mostly clear, with a low around 79°F26°C. Breezy from the S at 5 to 7 mph9 to 12 km/h.
Drizzle	High 97°F36°CFeels 104°F40°C	Low 77°F25°C	Precip 0.03 in0.8 mm43%	Cloud 40%	Wind E 4 mph7 km/h	Saturday: Partly cloudy and hot, with a high of 97°F36°C and morning low of 77°F25°C — feels like 104°F40°C. Light wind from the NE around 4 mph6 km/h. 43% chance of drizzle in the afternoon. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 79°F26°C. Light wind from the E around 5 mph8 km/h. 19% chance of drizzle in the evening.
Drizzle	High 90°F32°CFeels 94°F34°C	Low 73°F23°C	Precip 0.04 in0.9 mm15%	Cloud 56%	Wind E 6 mph10 km/h	Sunday: Mostly cloudy and hot, with a high of 90°F32°C and morning low of 73°F23°C. Breezy from the E at 6 to 7 mph10 to 11 km/h. 15% chance of drizzle throughout the day. Humid. Sunday Night: Mostly cloudy, with a low around 75°F24°C. Breezy from the E at 6 to 7 mph10 to 12 km/h.
Clear	High 90°F32°C	Low 70°F21°C	Precip 0.02 in0.4 mm6%	Cloud 38%	Wind ESE 7 mph11 km/h	Monday: Partly cloudy and hot, with a high of 90°F32°C and morning low of 70°F21°C. Breezy from the ESE at 6 to 7 mph10 to 11 km/h. Monday Night: Partly cloudy, with a low around 72°F22°C. Breezy from the E at 7 to 8 mph11 to 13 km/h.
Hot	High 97°F36°C	Low 71°F22°C	Precip 0 in0 mm—	Cloud 36%	Wind SSE 8 mph12 km/h	Tuesday: Partly cloudy and hot, with a high of 97°F36°C and morning low of 71°F22°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. Heat risk in the afternoon. Tuesday Night: Partly cloudy, with a low around 73°F23°C. Breezy from the SSE at 8 to 10 mph12 to 16 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 2	98°F37°C Feels 105°F40°C	84°F29°C Feels 88°F31°C	0 in0 mm· —	22%	Hot	SSW 6 mph10 km/h
DayMostly clear and hot, with a high of 98°F37°C — feels like 104°F40°C. Breezy from the SW at 8 mph12 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 84°F29°C. Light wind from the S around 5 mph9 km/h.
	ThursdaySep 3	98°F37°C Feels 103°F39°C	78°F25°C	0 in0 mm· —	11%	Hot	SSW 7 mph11 km/h
DayMostly clear and hot, with a high of 98°F37°C and morning low of 78°F25°C. Breezy from the SW at 7 to 8 mph12 to 13 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 80°F27°C. Breezy from the S at 7 to 8 mph11 to 13 km/h.
	FridaySep 4	98°F37°C Feels 103°F39°C	77°F25°C	0 in0 mm· —	14%	Hot	SSW 5 mph9 km/h
DayMostly clear and hot, with a high of 98°F37°C and morning low of 77°F25°C. Light wind from the SW around 5 mph8 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 79°F26°C. Breezy from the S at 5 to 7 mph9 to 12 km/h.
	SaturdaySep 5	97°F36°C Feels 104°F40°C	77°F25°C	0.03 in0.8 mm· 43%	40%	Drizzle	E 4 mph7 km/h
DayPartly cloudy and hot, with a high of 97°F36°C and morning low of 77°F25°C — feels like 104°F40°C. Light wind from the NE around 4 mph6 km/h. 43% chance of drizzle in the afternoon. Heat risk in the afternoon. NightPartly cloudy, with a low around 79°F26°C. Light wind from the E around 5 mph8 km/h. 19% chance of drizzle in the evening.
	SundaySep 6	90°F32°C Feels 94°F34°C	73°F23°C	0.04 in0.9 mm· 15%	56%	Drizzle	E 6 mph10 km/h
DayMostly cloudy and hot, with a high of 90°F32°C and morning low of 73°F23°C. Breezy from the E at 6 to 7 mph10 to 11 km/h. 15% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 75°F24°C. Breezy from the E at 6 to 7 mph10 to 12 km/h.
	MondaySep 7	90°F32°C	70°F21°C	0.02 in0.4 mm· 6%	38%	Clear	ESE 7 mph11 km/h
DayPartly cloudy and hot, with a high of 90°F32°C and morning low of 70°F21°C. Breezy from the ESE at 6 to 7 mph10 to 11 km/h. NightPartly cloudy, with a low around 72°F22°C. Breezy from the E at 7 to 8 mph11 to 13 km/h.
	TuesdaySep 8	97°F36°C	71°F22°C	0 in0 mm· —	36%	Hot	SSE 8 mph12 km/h
DayPartly cloudy and hot, with a high of 97°F36°C and morning low of 71°F22°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 73°F23°C. Breezy from the SSE at 8 to 10 mph12 to 16 km/h.
	WednesdaySep 9	97°F36°C Feels 101°F38°C	79°F26°C	0.01 in0.3 mm· 7%	25%	Hot	SSW 9 mph15 km/h
DayMostly clear and hot, with a high of 97°F36°C and morning low of 79°F26°C. Breezy from the SW at 9 to 10 mph15 to 15 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 81°F27°C. Breezy from the SSW at 9 to 11 mph14 to 17 km/h.
	ThursdaySep 10	90°F32°C Feels 93°F34°C	76°F25°C	0.09 in2.3 mm· 19%	44%	Showers	SW 8 mph13 km/h
DayPartly cloudy and hot, with a high of 90°F32°C and morning low of 76°F25°C. Breezy from the WSW at 8 mph13 km/h. 15% chance of drizzle throughout the day. Humid. NightPartly cloudy, with a low around 78°F25°C. Breezy from the SSW at 8 to 9 mph13 to 15 km/h. 19% chance of showers throughout the night.
	FridaySep 11	89°F32°C	71°F21°C	0.08 in2 mm· 16%	37%	Drizzle	SSW 7 mph12 km/h
DayPartly cloudy and hot, with a high of 89°F32°C and morning low of 71°F21°C. Breezy from the SSW at 8 mph12 km/h. 11% chance of drizzle throughout the day. NightPartly cloudy, with a low around 72°F22°C. Breezy from the S at 7 to 8 mph11 to 13 km/h. 16% chance of drizzle throughout the night.
	SaturdaySep 12	88°F31°C	70°F21°C	0.08 in2 mm· 13%	44%	Drizzle	S 8 mph13 km/h
DayPartly cloudy and hot, with a high of 88°F31°C and morning low of 70°F21°C. Breezy from the SSW at 9 mph14 km/h. 13% chance of drizzle throughout the day. NightPartly cloudy, with a low around 72°F22°C. Breezy from the S at 8 mph12 km/h. 11% chance of drizzle throughout the night.
	SundaySep 13	88°F31°C	70°F21°C	0.13 in3.2 mm· 16%	49%	Showers	S 9 mph14 km/h
DayMostly cloudy and hot, with a high of 88°F31°C and morning low of 70°F21°C. Breezy from the SSW at 9 to 10 mph15 to 17 km/h. 12% chance of drizzle throughout the day. NightPartly cloudy, with a low around 72°F22°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. 16% chance of showers throughout the night.
	MondaySep 14	86°F30°C	70°F21°C	0.18 in4.5 mm· 20%	53%	Showers	SSW 8 mph13 km/h
DayMostly cloudy and hot, with a high of 86°F30°C and morning low of 70°F21°C. Breezy from the SSW at 9 mph14 km/h. 20% chance of showers throughout the day. NightMostly cloudy, with a low around 72°F22°C. Breezy from the S at 8 to 9 mph13 to 14 km/h. 18% chance of showers throughout the night.
	TuesdaySep 15	84°F29°C	68°F20°C	0.17 in4.4 mm· 23%	50%	Showers	SSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 84°F29°C and morning low of 68°F20°C. Breezy from the SW at 8 to 9 mph13 to 14 km/h. 23% chance of showers throughout the day. NightPartly cloudy, with a low around 70°F21°C. Breezy from the S at 7 to 8 mph12 to 13 km/h. 17% chance of showers throughout the night.
	WednesdaySep 16	83°F28°C	65°F18°C	0.1 in2.5 mm· 15%	42%	Showers	SSW 7 mph12 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 65°F18°C. Breezy from the SW at 8 to 9 mph12 to 14 km/h. 15% chance of showers throughout the day. NightPartly cloudy, with a low around 67°F19°C. Breezy from the S at 7 to 8 mph11 to 12 km/h. 10% 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.

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Coordinates: 39.7339°N, 90.2290°W·Elevation: 186m·Timezone: America/Chicago·Population: 19,103