Typically, the month marks a transition from autumn to early winter across the state. Average temperatures cool considerably from October, with northern Illinois experiencing significantly colder conditions than the southern part of the state. Expect daytime highs in the 40s and 50s Fahrenheit (4-10 degrees Celsius) and overnight lows dipping into the 30s (around 0-4 degrees Celsius) in the north, while southern areas might see highs in the 50s and low 60s Fahrenheit (10-15 degrees Celsius) and lows in the 40s (4-9 degrees Celsius). Precipitation shifts from rain to a mix of rain and snow, particularly in the northern regions, as the month progresses. The first snowfall of the season is common in November, especially in northern and central Illinois.
Understanding the typical weather patterns for this period is crucial for residents, businesses, and visitors. Farmers rely on this information for late harvests and preparing fields for winter. Transportation departments utilize forecasts to anticipate potential road closures due to inclement weather. Accurate weather predictions allow for effective planning of outdoor events and activities, and public safety officials can prepare resources for potential weather-related emergencies. Historical weather data from November provides valuable context for understanding long-term climate trends and seasonal variations across the state.