Current Conditions

Chatham, Illinois

77°F25°C

Rain

Wind

S 10 mph16 km/h

Humidity

65%

Cloud Cover

56%

As of Tuesday, September 8, 2026 at 11:17 PM CDT

Today's Outlook

Night

Mostly cloudy, with a low around 74°F23°C. Breezy from the SW at 8 to 11 mph14 to 17 km/h. 14% chance of drizzle before dawn.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Rain	High 78°F26°C	Low 73°F23°C	Precip 0.25 in6.4 mm97%	Cloud 86%	Wind SW 9 mph14 km/h	Wednesday: Overcast and warm, with a high of 78°F26°C and morning low of 73°F23°C. Breezy from the WSW at 9 to 10 mph15 to 16 km/h. 97% chance of rain throughout the day. Humid. Wednesday Night: Mostly cloudy, with a low around 74°F23°C. Breezy from the SW at 8 to 11 mph14 to 17 km/h. 14% chance of drizzle before dawn.
Partly Cloudy	High 74°F23°C	Low 68°F20°C	Precip 0.03 in0.7 mm9%	Cloud 77%	Wind NNE 8 mph12 km/h	Thursday: Overcast and warm, with a high of 74°F23°C. Breezy from the NNE at 8 to 10 mph13 to 16 km/h. Thursday Night: Mostly cloudy, with a low around 68°F20°C. Breezy from the N at 7 to 8 mph12 to 13 km/h.
Clear	High 78°F26°C	Low 65°F18°C	Precip 0 in0 mm—	Cloud 20%	Wind ESE 6 mph10 km/h	Friday: Mostly clear and warm, with a high of 78°F26°C and morning low of 65°F18°C. Light wind from the ESE around 6 mph10 km/h. Friday Night: Mostly clear, with a low around 65°F19°C. Breezy from the ESE at 7 to 9 mph11 to 14 km/h.
Drizzle	High 82°F28°CFeels 85°F29°C	Low 68°F20°C	Precip 0.02 in0.4 mm13%	Cloud 45%	Wind SSW 8 mph13 km/h	Saturday: Mostly cloudy and warm, with a high of 82°F28°C and morning low of 68°F20°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 12% chance of drizzle in the afternoon. Humid. Saturday Night: Partly cloudy, with a low around 69°F20°C. Breezy from the SSW at 7 to 9 mph12 to 14 km/h. 13% chance of drizzle in the evening.
Clear	High 73°F23°C	Low 68°F20°C	Precip 0.03 in0.8 mm8%	Cloud 34%	Wind N 9 mph15 km/h	Sunday: Partly cloudy and warm, with a high of 73°F23°C and morning low of 68°F20°C. Breezy from the N at 10 mph16 km/h. Sunday Night: Partly cloudy, with a low around 68°F20°C. Breezy from the N at 9 to 10 mph14 to 16 km/h.
Drizzle	High 79°F26°C	Low 65°F18°C	Precip 0.08 in2.1 mm16%	Cloud 51%	Wind SE 12 mph19 km/h	Monday: Mostly cloudy and warm, with a high of 79°F26°C and morning low of 65°F18°C. Breezy from the SE at 11 to 13 mph18 to 21 km/h. 16% chance of drizzle throughout the day. Monday Night: Partly cloudy, with a low around 66°F19°C. Windy from the SE at 12 to 16 mph19 to 26 km/h. 12% chance of drizzle throughout the night.
Showers	High 81°F27°C	Low 72°F22°C	Precip 0.13 in3.4 mm32%	Cloud 62%	Wind SSW 12 mph20 km/h	Tuesday: Mostly cloudy and warm, with a high of 81°F27°C and morning low of 72°F22°C. Breezy from the SW at 12 to 13 mph20 to 21 km/h. 18% chance of drizzle throughout the day. Humid. Tuesday Night: Mostly cloudy, with a low around 73°F23°C. Windy from the SSW at 13 to 17 mph20 to 27 km/h. 32% chance of showers throughout the night.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	78°F26°C	73°F23°C	0.25 in6.4 mm· 97%	86%	Rain	SW 9 mph14 km/h
DayOvercast and warm, with a high of 78°F26°C and morning low of 73°F23°C. Breezy from the WSW at 9 to 10 mph15 to 16 km/h. 97% chance of rain throughout the day. Humid. NightMostly cloudy, with a low around 74°F23°C. Breezy from the SW at 8 to 11 mph14 to 17 km/h. 14% chance of drizzle before dawn.
	ThursdaySep 10	74°F23°C	68°F20°C	0.03 in0.7 mm· 9%	77%	Partly Cloudy	NNE 8 mph12 km/h
DayOvercast and warm, with a high of 74°F23°C. Breezy from the NNE at 8 to 10 mph13 to 16 km/h. NightMostly cloudy, with a low around 68°F20°C. Breezy from the N at 7 to 8 mph12 to 13 km/h.
	FridaySep 11	78°F26°C	65°F18°C	0 in0 mm· —	20%	Clear	ESE 6 mph10 km/h
DayMostly clear and warm, with a high of 78°F26°C and morning low of 65°F18°C. Light wind from the ESE around 6 mph10 km/h. NightMostly clear, with a low around 65°F19°C. Breezy from the ESE at 7 to 9 mph11 to 14 km/h.
	SaturdaySep 12	82°F28°C Feels 85°F29°C	68°F20°C	0.02 in0.4 mm· 13%	45%	Drizzle	SSW 8 mph13 km/h
DayMostly cloudy and warm, with a high of 82°F28°C and morning low of 68°F20°C. Breezy from the SW at 8 to 9 mph13 to 15 km/h. 12% chance of drizzle in the afternoon. Humid. NightPartly cloudy, with a low around 69°F20°C. Breezy from the SSW at 7 to 9 mph12 to 14 km/h. 13% chance of drizzle in the evening.
	SundaySep 13	73°F23°C	68°F20°C	0.03 in0.8 mm· 8%	34%	Clear	N 9 mph15 km/h
DayPartly cloudy and warm, with a high of 73°F23°C and morning low of 68°F20°C. Breezy from the N at 10 mph16 km/h. NightPartly cloudy, with a low around 68°F20°C. Breezy from the N at 9 to 10 mph14 to 16 km/h.
	MondaySep 14	79°F26°C	65°F18°C	0.08 in2.1 mm· 16%	51%	Drizzle	SE 12 mph19 km/h
DayMostly cloudy and warm, with a high of 79°F26°C and morning low of 65°F18°C. Breezy from the SE at 11 to 13 mph18 to 21 km/h. 16% chance of drizzle throughout the day. NightPartly cloudy, with a low around 66°F19°C. Windy from the SE at 12 to 16 mph19 to 26 km/h. 12% chance of drizzle throughout the night.
	TuesdaySep 15	81°F27°C	72°F22°C	0.13 in3.4 mm· 32%	62%	Showers	SSW 12 mph20 km/h
DayMostly cloudy and warm, with a high of 81°F27°C and morning low of 72°F22°C. Breezy from the SW at 12 to 13 mph20 to 21 km/h. 18% chance of drizzle throughout the day. Humid. NightMostly cloudy, with a low around 73°F23°C. Windy from the SSW at 13 to 17 mph20 to 27 km/h. 32% chance of showers throughout the night.
	WednesdaySep 16	75°F24°C	69°F20°C	0.26 in6.5 mm· 39%	68%	Showers	ENE 8 mph13 km/h
DayMostly cloudy and warm, with a high of 75°F24°C and morning low of 69°F20°C. Breezy from the ENE at 8 mph13 km/h. 33% chance of light rain throughout the day. NightMostly cloudy, with a low around 70°F21°C. Breezy from the ENE at 9 mph14 km/h. 39% chance of showers throughout the night.
	ThursdaySep 17	78°F25°C	70°F21°C	0.31 in7.9 mm· 33%	58%	Showers	SSW 11 mph18 km/h
DayMostly cloudy and warm, with a high of 78°F25°C and morning low of 70°F21°C. Breezy from the SW at 11 mph18 km/h. 33% chance of showers throughout the day. Humid. NightMostly cloudy, with a low around 71°F22°C. Breezy from the S at 11 mph17 km/h. 27% chance of showers throughout the night.
	FridaySep 18	72°F22°C	66°F19°C	0.17 in4.2 mm· 24%	53%	Showers	NW 11 mph17 km/h
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 66°F19°C. Breezy from the NW at 11 mph18 km/h. 20% chance of showers throughout the day. NightMostly cloudy, with a low around 66°F19°C. Breezy from the NW at 11 to 12 mph17 to 19 km/h. 24% chance of showers throughout the night.
	SaturdaySep 19	69°F20°C	62°F16°C	0.14 in3.6 mm· 18%	54%	Showers	NNW 10 mph16 km/h
DayMostly cloudy and warm, with a high of 69°F20°C and morning low of 62°F16°C. Breezy from the NNW at 10 mph16 km/h. 17% chance of drizzle throughout the day. NightMostly cloudy, with a low around 63°F17°C. Breezy from the N at 10 mph16 km/h. 18% chance of showers throughout the night.
	SundaySep 20	67°F20°C	60°F15°C	0.12 in3.1 mm· 21%	55%	Showers	NNE 11 mph17 km/h
DayMostly cloudy and mild, with a high of 67°F20°C and morning low of 60°F15°C. Breezy from the NNE at 11 mph18 km/h. 19% chance of drizzle throughout the day. NightMostly cloudy, with a low around 61°F16°C. Breezy from the NNE at 11 mph17 km/h. 21% chance of showers throughout the night.
	MondaySep 21	67°F20°C	58°F15°C	0.13 in3.4 mm· 19%	54%	Showers	ENE 10 mph16 km/h
DayMostly cloudy and mild, with a high of 67°F20°C and morning low of 58°F15°C. Breezy from the ENE at 10 mph16 km/h. 19% chance of showers throughout the day. NightMostly cloudy, with a low around 60°F15°C. Breezy from the ENE at 10 to 11 mph17 to 17 km/h. 18% chance of showers throughout the night.
	TuesdaySep 22	67°F19°C	58°F15°C	0.11 in2.9 mm· 14%	55%	Drizzle	ENE 11 mph17 km/h
DayMostly cloudy and mild, with a high of 67°F19°C and morning low of 58°F15°C. Breezy from the ENE at 11 mph17 km/h. 14% chance of drizzle throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the E at 11 mph17 km/h. 14% chance of drizzle throughout the night.
	WednesdaySep 23	68°F20°C	58°F15°C	0.1 in2.5 mm· 17%	54%	Showers	ESE 10 mph16 km/h
DayMostly cloudy and mild, with a high of 68°F20°C and morning low of 58°F15°C. Breezy from the ESE at 10 to 11 mph16 to 17 km/h. 17% chance of showers throughout the day. NightMostly cloudy, with a low around 59°F15°C. Breezy from the E at 10 to 11 mph16 to 17 km/h. 14% chance of drizzle throughout the night.

Nearby Cities

Greater Grand Crossing1 mi2 km Auburn Gresham2 mi3 km South Shore2 mi4 km Woodlawn3 mi4 km South Chicago3 mi5 km Englewood3 mi5 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: 41.7411°N, 87.6125°W·Elevation: 180m·Timezone: America/Chicago·Population: 31,392