Monthly climate — Chicago
Long-term monthly averages. The best months to visit are marked with a star.
0°
-7°
Jan
+1°
-7°
Feb
+7°
-1°
Mar
+13°
+4°
Apr
+19°
+11°
May
+25°
+17°
⭐ Jun
+27°
+20°
⭐ Jul
+27°
+20°
⭐ Aug
+23°
+16°
Sep
+16°
+9°
Oct
+9°
+2°
Nov
+3°
-3°
Dec
Bar colour shows temperature:coldcoolcomfortablewarmhot⭐ — best months to visit
| Month | Day | Night | Rainfall | What to pack |
|---|---|---|---|---|
| January | 0° | -7° | 64.85000000000005mm | ❄️ a warm coat, hat and non-slip shoes. |
| February | +1° | -7° | 61.48999999999995mm | ❄️ a warm coat, hat and non-slip shoes. |
| March | +7° | -1° | 76.78499999999995mm | 🧣 a warmer jacket. |
| April | +13° | +4° | 108.09999999999995mm | 🧥 a warm jacket. |
| May | +19° | +11° | 112.18499999999999mm | 🙂 a layer for the evening. |
| ⭐ June | +25° | +17° | 110.68499999999999mm | 😊 light summer clothing. |
| ⭐ July | +27° | +20° | 113.79499999999993mm | 😊 light summer clothing. |
| ⭐ August | +27° | +20° | 102.68999999999997mm | 😊 light summer clothing. |
| September | +23° | +16° | 91.56999999999991mm | 🙂 a layer for the evening. |
| October | +16° | +9° | 104.72499999999995mm | 🙂 a layer for the evening. |
| November | +9° | +2° | 59.360000000000014mm | 🧥 a warm jacket. |
| December | +3° | -3° | 70.79499999999996mm | ❄️ a warm coat, hat and non-slip shoes. |
When to visitChicago
Best months: June, July, August and September
Daytime high+23°…+27°
The most comfortable weather of the year — the best time for sightseeing and the outdoors.
Shoulder season: January, February, May and October
Daytime high0°…+19°
Conditions are changeable but workable, with fewer crowds than peak season.
Harder months: March, April, November and December
Daytime high+3°…+13°
The most extreme weather of the year — plan activity for the cooler parts of the day.
In short:The most comfortable months to visit Chicago are June, July and August, with the most pleasant daytime temperatures and low rainfall. The hardest months for active outdoor travel are January, February and March.
Compared to the climate normal
Today’s high
+35°
Normal for this month
+25°
Deviation
+9° warmer than normal
Frequently asked questions — Chicago
What is the weather like in Chicago right now?
Right now it is +25° in Chicago, and it feels like +29°. See the hourly forecast above for how it changes through the day.
When is the best time to visit Chicago?
The best months to visit Chicago are September, June and August, when the weather is most comfortable and rainfall is low.
When is the rainy season in Chicago?
Rainfall in Chicago is concentrated in the wetter months; the monthly climate chart above shows when precipitation peaks across the year.
How hot does Chicago get in summer?
Summer is the hottest part of the year in Chicago. Plan outdoor activity for the morning or evening and stay hydrated during the midday heat.