Glen Ellyn Weather in September

September in Glen Ellyn averages 24°C (75°F) during the day and 12°C (54°F) at night. Quite a bit of rainfall is typical this month, with around 93 mm (3.7 in) on average. An umbrella is a good idea.

Rainfall in Glen Ellyn in September

Past climate data indicates that roughly 8 days will see rain, totalling around 93 mm (3.7 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Glen Ellyn in September

The excellent temperature in Glen Ellyn in September makes it a solid month to visit, with 24°C (75°F) during the day and 12°C (54°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 12°C (54°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Glen Ellyn in September

The month enjoys around 226 hours of sunshine, creating mostly sunny days with good weather conditions.

Wind Speed in Glen Ellyn in September

September sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Glen Ellyn.