Weather & Seasons in Chicago Northwest

Chicago Northwest enjoys all four distinct seasons — each with its own character, activities and packing needs. Whether you’re here for summer tournaments, a fall getaway, a winter escape, or a spring adventure, here’s what to expect — so you can bring the right gear and plan your itinerary accordingly.

Spring (March – May)

• Early spring can still feel cool: expect highs in the 40s–60s °F (5–20 °C) and lows often dipping into the 30s °F (0–5 °C).
• By late April and May, temperatures often rise into the 60s and 70s °F (15–25 °C).
• Packing tip: layers! Bring a light jacket, perhaps waterproof, plus a sweater for cool mornings or evenings.
• Activity tip: Ideal time for nature-walks at places like the Busse Woods Forest Preserve or visiting local parks as the trees and flowers begin to bloom.

Summer (June – August)

• Summer is warm and lively, with highs frequently in the 80s °F (26-32 °C) and sometimes into the 90s °F (32-35 °C), and lows generally in the 60s °F (15-20 °C).
• Expect plenty of sunshine and long days — great for outdoor family activities, pool time, shopping, and sightseeing.
• Packing tip: shorts, t-shirts, sunglasses, sunscreen, and a hat. Also bring a light layer for air-conditioned indoor spaces.
• Activity tip: Plan early-morning or evening outdoor excursions to beat the midday heat. Check out shopping at Woodfield Mall or outdoor attractions nearby.

Fall (September – November)

• Fall brings crisp air and changing foliage. Early fall: highs in the 70s °F (20-25 °C). By November: highs in the 40s-50s °F (5-10 °C) with lows dipping into the 30s °F (0–5 °C).
• Packing tip: bring a medium jacket or fleece in September, moving to a heavier coat, hat and gloves by November.
• Activity tip: Enjoy scenic walks, fall color in the forests, and outdoor dining before winter sets in.

Winter (December – February)

• Winters are cold with snow. Highs often in the 30s-40s °F (0-5 °C) or lower; lows can go into the teens and below (-10 °C or colder).
• Packing tip: heavy coat, gloves, scarf, hat, boots and layers. If you plan on outdoor time, consider weather-proof gear.
• Activity tip: If visiting in winter, plan indoor backup options for events or sightseeing. Many hotels, restaurants and attractions welcome families and groups even in colder months.

Average Monthly Temperatures

*Sourced from the National Weather Service