Weather in Chicago — today
Now in Chicago
🌙
+13°
Mostly clear
Feels like +11° · humidity 83%
Today 27.10: +12° / +3°
🕐 03:25
Wind
14 km/h
UV index
0
Air (AQI)
27 · Good
Precipitation
10%
Humidity
83%
Pressure
1025 hPa
Sunrise / sunset
07:17 / 17:51
👕 What to wear today
Cool — a jacket or a warm sweater.
💨 WindyFeels colder by 2°
Weather for an activity:
Detailed weather information for Chicago
Today, 27 October, Tuesday, in Chicago (United States): cloudy, light rain in places, cool. During the day the air will warm up to +12°, at night around +3°. Wind up to 24 km/h. No precipitation expected, you won't need an umbrella. You'll need a warm jacket or a sweater, especially in the evening. The sun will rise at 07:17 and set at 17:51 — daylight lasts 11 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 27.10
🌦️
💧 10%
+3° +12°
Morning
☁️
+12°
Day
🌦️
+12°
Evening
🌇
+15°
Night
🌙
+3°
▶
Tomorrow 28.10
⛅
💧 6%
+0° +6°
Morning
☀️
+10°
Day
⛅
+6°
Evening
🌇
+18°
Night
🌙
+0°
▶
Thu 29.10
🌤️
💧 10%
+2° +10°
Morning
🌤️
+5°
Day
🌤️
+10°
Evening
🌇
+8°
Night
🌙
+2°
▶
Fri 30.10
☀️
💧 16%
+4° +13°
Morning
☀️
+7°
Day
☀️
+13°
Evening
🌇
+11°
Night
🌙
+4°
▶
Sat 31.10
☁️
💧 28%
+8° +17°
Morning
☁️
+11°
Day
☁️
+17°
Evening
🌇
+15°
Night
🌙
+8°
▶
Sun 1.11
🌦️
💧 32%
+11° +16°
Morning
🌦️
+13°
Day
🌦️
+16°
Evening
🌇
+15°
Night
🌙
+11°
🗺️ 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
0%
moderate · low
☂️ Rain
10%
unlikely · low
✨ Stars
81 / 100
evening visibility · Excellent
🧺 Laundry drying
30 / 100
will dry outside · So-so
🚗 Car wash
83 / 100
no rain expected · Excellent
🌫️ Air quality
27
Good air
European AQI
PM2.5: 9PM10: 9O₃: 45NO₂: 15
The air is clean — you can walk and exercise outside.
🌅 Sun, moon and sea
Sunrise
07:17
Sunset
17:51
Golden hour
17:12
Daylight
11 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.
🌡️ Today vs the climate normal
Today's high
+12°
Normal for October
+16°
Deviation
4° colder than normal
A year ago on this day
+13°
Record for this date
+23° (2014)
The normal, “a year ago” and the record come from the weather archive since 1940 (Open-Meteo / ERA5).
Weather archive for Chicago
📅 See what the weather was like on any day since 1940. For example: “what was the weather on March 2, 2021”.
Show the archive for the selected day →
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Weather in cities near Chicago
Frequently asked questions about the weather in Chicago
What is the weather in Chicago right now?＋
Mostly clear, +13°, feels like +11°.
Will it rain in Chicago today?＋
Yes: 10% chance, 8 mm.
When is the best time to visit Chicago?＋
Best time to visit — July – September.
What time are sunrise and sunset in Chicago?＋
Sunrise 07:17, sunset 17:51.
Does it snow in Chicago in winter?＋
Yes, snow is possible in January, February, March, December.
What is the climate in Chicago by month?＋
Summers up to +27° in July, winters around -7° in January; the wettest month is May.
Is it cold in Chicago in winter?＋
❄️ Cold, around zero and below. A warm jacket and a hat are a must; ice is common — you'll need non-slip shoes.