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Weather in Chicago — today

Tomorrow Day after tomorrow 3 days Week 14 days Month forecast Weather archive

Now in Chicago

🌙

+20°

Clear

Feels like +19° · humidity 73%

Today 12.9: +31° / +17°

🕐 00:25

Wind

12 km/h

UV index

Air (AQI)

35 · Good

Precipitation

Humidity

73%

Pressure

1010 hPa

Sunrise / sunset

06:27 / 19:05

👕 What to wear today

Warm — a T-shirt and light trousers or shorts.

Weather for an activity:

🎣 fishing 🏃 a run 📸 a photo shoot 🚶 a walk

Detailed weather information for Chicago

Today, 12 September, Saturday, in Chicago (United States): partly cloudy, hot. During the day the air will warm up to +31°, at night around +17°. Due to the wind it feels like +19°. Wind up to 17 km/h. No precipitation expected, you won't need an umbrella. Light summer clothing will do — a T-shirt and shorts or light trousers. The sun will rise at 06:27 and set at 19:05 — daylight lasts 13 hours.

Hourly weather in Chicago

💧 The bars at the bottom show the hourly precipitation probability. Shaded areas of the chart are the dark hours (before sunrise 🌅 and after sunset 🌇).

Weather in Chicago for 14 days

Tap a day to expand it by time of day and open the full forecast. The bar shows the range from the night low (left) to the day high (right).

▶

Today 12.9

☁️

💧 6%

+17° +31°

Morning

☀️

+20°

Day

☁️

+31°

Evening

🌇

+29°

Night

🌙

+17°

Overcast · precipitation 6% · wind up to 17 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Tomorrow 13.9

🌦️

💧 33%

+16° +23°

Morning

☁️

+18°

Day

🌦️

+23°

Evening

🌇

+17°

Night

🌙

+16°

Light rain · precipitation 33% · wind up to 24 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Mon 14.9

☁️

💧 6%

+16° +22°

Morning

☁️

+18°

Day

☁️

+22°

Evening

🌇

+21°

Night

🌙

+16°

Overcast · precipitation 6% · wind up to 21 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Tue 15.9

🌦️

💧 60%

+17° +27°

Morning

🌦️

+21°

Day

🌦️

+27°

Evening

🌇

+25°

Night

🌙

+17°

Rain showers · precipitation 60% · wind up to 23 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Wed 16.9

🌦️

💧 70%

+20° +25°

Morning

🌦️

+22°

Day

🌦️

+25°

Evening

🌇

+24°

Night

🌙

+20°

Rain showers · precipitation 70% · wind up to 12 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Thu 17.9

🌦️

💧 57%

+19° +23°

Morning

🌦️

+20°

Day

🌦️

+23°

Evening

🌇

+22°

Night

🌙

+19°

Rain showers · precipitation 57% · wind up to 21 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Fri 18.9

☁️

💧 24%

+17° +20°

Morning

☁️

+18°

Day

☁️

+20°

Evening

🌇

+19°

Night

🌙

+17°

Overcast · precipitation 24% · wind up to 18 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Sat 19.9

☁️

💧 24%

+16° +22°

Morning

☁️

+18°

Day

☁️

+22°

Evening

🌇

+21°

Night

🌙

+16°

Overcast · precipitation 24% · wind up to 13 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Sun 20.9

🌤️

💧 9%

+17° +24°

Morning

🌤️

+20°

Day

🌤️

+24°

Evening

🌇

+22°

Night

🌙

+17°

Mostly clear · precipitation 9% · wind up to 14 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Mon 21.9

☁️

💧 12%

+18° +24°

Morning

☁️

+20°

Day

☁️

+24°

Evening

🌇

+23°

Night

🌙

+18°

Overcast · precipitation 12% · wind up to 14 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Tue 22.9

☁️

💧 16%

+18° +23°

Morning

☁️

+20°

Day

☁️

+23°

Evening

🌇

+22°

Night

🌙

+18°

Overcast · precipitation 16% · wind up to 17 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Wed 23.9

☁️

💧 16%

+16° +22°

Morning

☁️

+18°

Day

☁️

+22°

Evening

🌇

+21°

Night

🌙

+16°

Overcast · precipitation 16% · wind up to 15 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Thu 24.9

☁️

💧 32%

+16° +24°

Morning

☁️

+19°

Day

☁️

+24°

Evening

🌇

+22°

Night

🌙

+16°

Overcast · precipitation 32% · wind up to 11 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

▶

Fri 25.9

☁️

💧 17%

+19° +29°

Morning

☁️

+23°

Day

☁️

+29°

Evening

🌇

+27°

Night

🌙

+19°

Overcast · precipitation 17% · wind up to 20 km/h.
😊 Warm and comfortable. Perfect for walks, the beach and sightseeing.

🗺️ Precipitation radar

Precipitation radar (RainViewer) over a clean base map — updates every 5–10 minutes. Colours show nearby precipitation; if there is none, the map is simply clear — that is normal. Zoom with + / −.

Rain intensity:lightmoderateheavy

🎯 What to do in this weather — indices of the day

Comfort score from 0 (bad) to 100 (excellent), calculated from the day's weather. For “rain” and “UV” a percentage/risk level is shown.

🏃 Running

58 / 100

comfort for running · Average

🧴 UV

moderate · low

☂️ Rain

unlikely · low

✨ Stars

84 / 100

evening visibility · Excellent

🧺 Laundry drying

60 / 100

will dry outside · Average

🚗 Car wash

88 / 100

no rain expected · Excellent

🌫️ Air quality

Good air

European AQI

PM2.5: 10PM10: 10O₃: 61NO₂: 21

The air is clean — you can walk and exercise outside.

🌅 Sun, moon and sea

Sunrise

06:27

Sunset

19:05

Golden hour

18:28

Daylight

13 h (-3 min vs yesterday)

Chicago climate by month

Long-term averages. Hover over a bar for details. The forecast for a specific month is a combination of the climate normal and the model forecast for the coming weeks.

-1°

-7°

Jan

+1°

-7°

Feb

+6°

-2°

Mar

+12°

+4°

Apr

+19°

+11°

May

+25°

+17°

Jun

+27°

+20°

Jul

+26°

+20°

Aug

+23°

+16°

Sep

+16°

+9°

Oct

+8°

+2°

Nov

+2°

-4°

Dec

swipe sideways →

Bar color shows temperature:frostcoolcomfortablewarmhot— best months to visit

Month	Day	Night	Precipitation	What to pack and what makes the month notable (events, nuances)
January	-1°	-7°	62 mm	The coldest stretch: -1° by day, full winter clothing required. One of the wettest months (62 mm): downpours can derail plans. ❄️ a warm jacket, a hat, non-slip shoes. This is the coldest month of the year.
February	+1°	-7°	54 mm	Freezing: +1° by day, -7° at night — full winter gear, ice underfoot is common. ❄️ a warm jacket, a hat, non-slip shoes.
March	+6°	-2°	71 mm	Winter weather: about +6° daytime, you need a warm coat and hat. Frequent rain (71 mm over the month) — keep indoor backup plans. 🧣 a warmer jacket.
April	+12°	+4°	109 mm	Cool weather: +12° by day, noticeably colder in the evening. One of the wettest months (109 mm): downpours can derail plans. 🧥 a warm jacket.
May	+19°	+11°	115 mm	One of the best times to visit: +19° by day, fresh nights. It's a rainy month (115 mm) — an umbrella is a must. 🙂 a sweater for the evening. Statistically the wettest month of the year.
June	+25°	+17°	104 mm	Ideal weather: +25° daytime — neither hot nor cold. Frequent rain (104 mm over the month) — keep indoor backup plans. 😊 light summer clothing. The longest daylight hours of the year — more time for everything.
July	+27°	+20°	98 mm	A comfortable month: +27° by day without exhausting heat. One of the wettest months (98 mm): downpours can derail plans. 😊 light summer clothing. This is the hottest month of the year in Chicago.
August	+26°	+20°	98 mm	Warm and comfortable: +26° by day, +20° at night. It's a rainy month (98 mm) — an umbrella is a must. 😊 light summer clothing. Weather-wise, one of the three best months to visit.
September	+23°	+16°	79 mm	Ideal weather: +23° daytime — neither hot nor cold. Frequent rain (79 mm over the month) — keep indoor backup plans. 🙂 a sweater for the evening. Weather-wise, one of the three best months to visit.
October	+16°	+9°	87 mm	Cool weather: +16° by day, noticeably colder in the evening. One of the wettest months (87 mm): downpours can derail plans. 🧥 a warm jacket.
November	+8°	+2°	72 mm	Cold: +8° by day, down to +2° at night — dress warmly. It's a rainy month (72 mm) — an umbrella is a must. 🧥 a warm jacket.
December	+2°	-4°	60 mm	Winter weather: about +2° daytime, you need a warm coat and hat. ❄️ a warm jacket, a hat, non-slip shoes. The shortest daylight of the year — it gets dark early.

When to visit Chicago

✅ Recommended time to visit

🌟 Best time: July, August, September

Daytime air+23…+27°

Precipitationoften

Why: comfortable +23…+27° by day, little rain.

⚠️ Doable, with caveats

🌤️ Shoulder season: January, February, March, May, June, October

Daytime air-1…+25°

Precipitationoften

Why: noticeable rain risk (54–115 mm/month) — pack an umbrella and backup plans.

🔴 Not the best time

❄️ Cold season: April, November, December

Daytime air+2…+12°

Precipitationoften

Why: cold and dark (+2…+12° by day, 9 h of daylight) — only if frost and short days don’t put you off.

Bottom line: the best time to visit Chicago is July – September, and the most comfortable months are July, August, September. The toughest months to visit are April, November, December: frequent rain.