September light on Chicago skyline from lakefront

Best time to visit Chicago for good weather

When is the best weather in Chicago? Monthly breakdown of temperature, rainfall, and sunshine hours — ranked by what actually matters for your trip.

Best month

September

The best Chicago month — 24°C lake breeze, jazz festival, Bears season opens at Soldier Field.

Chicago Jazz Festival (Labor Day weekend) — free, Millennium Park

Bears NFL home opener — Soldier Field tailgate atmosphere

Hotel rates dropping back to spring levels by mid-month

All months ranked — Good weather

September

Best match

The best Chicago month — 24°C lake breeze, jazz festival, Bears season opens at Soldier Field.

#1 for good weather

October

Best match

Chicago Marathon weekend (second Sun in Oct) — 50,000 runners through every neighbourhood.

#2 for good weather

June

Best match

Festival summer begins — Blues Fest (Jun), Pride Parade, beach culture at Oak Street and North Avenue.

#3 for good weather

May

Strong option

Patio culture explodes — 20°C lakefront, Riverwalk wine bars reopen, Memorial Day starts summer.

#4 for good weather

August

Strong option

Air & Water Show fills the lakefront sky — Blue Angels rip past Navy Pier at 500mph.

#5 for good weather

April

Strong option

Cubs season opens at Wrigley — first rooftop game and 14°C lakefront jogs.

#6 for good weather

July

Strong option

Lollapalooza, Taste of Chicago, 4 July fireworks at Navy Pier — the city at maximum volume.

#7 for good weather

November

Strong option

Magnificent Mile Lights Festival (Sat before Thanksgiving) — Mickey Mouse pushes the button, holidays begin.

#8 for good weather

March

Strong option

St Patrick's Day weekend — Chicago River dyed green, every Irish bar in Bridgeport packed.

#9 for good weather

December

Worth considering

Christkindlmarket fills Daley Plaza, Macy's windows on State Street, ice rink at Maggie Daley Park.

#10 for good weather

January

Avoid

The Hawk arrives — lake-effect wind chill hits -25°C, but Restaurant Week and museums are at their cheapest.

#11 for good weather

February

Avoid

Coldest month statistically — Chicago River dyed green begins planning, museum culture peaks.

#12 for good weather

Other priorities for Chicago

Good weather in other destinations

Scores are directional — designed to compare months within Chicago, not to make precise claims. Full methodology →