February weather forecast
Illinois, USA

February in Illinois marks the tail end of the winter season, yet it retains its frigid grip across the state. Northern areas, especially those proximate to the Wisconsin boundary, continue to grapple with cold conditions, with temperatures commonly resting just a few degrees above freezing during the day. The southern zones, closer to the Kentucky frontier, while still cold, are comparatively milder.

The city of Chicago remains a focal point for February's climatic patterns. Situated on the shores of Lake Michigan, the city frequently witnesses lake effect snow, although its intensity typically wanes as the month progresses. This phenomenon ensures that Chicago and its nearby locales receive a more substantial snow blanket than other parts of Illinois.

Nighttime readings during February are still stringent, especially in the northern sectors, often dipping below 0°F (-17.8°C). The snow mantle persists throughout the state, but there's a slight reduction in its overall depth compared to January, ranging from around 10" (254mm) in the southern regions to approximately 30" (762mm) in the north.

Transitioning from January, February shows a slight uptick in average temperatures, signaling the gradual approach of spring. While still wintry, the latter half of February can sometimes offer glimpses of milder weather, setting the stage for the more temperate conditions expected in March.

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• Chicago - February »
  In Chicago, during February, snow falls for 9.9 days and regularly aggregates up to 3.54" (90mm) of snow. With an average ocean temperature of 36.9°F (2.7°C), February is the month with the coldest seawater in Chicago.
• Aurora - February »
  The month with the least rainfall in Aurora is February, when the rain falls for 5 days and typically collects 0.51" (13mm) of precipitation. In Aurora, Illinois, during February, snow falls for 8.5 days and regularly aggregates up to 1.14" (29mm) of snow.
• Rockford - February »
  The month with the least rainfall in Rockford, Illinois, is February, when the rain falls for 4.3 days and typically collects 1.26" (32mm) of precipitation. In Rockford, Illinois, during February, snow falls for 10.3 days and regularly aggregates up to 2.87" (73mm) of snow.
• Joliet - February »
  The month with the least rainfall in Joliet is February, when the rain falls for 5.7 days and typically collects 1.61" (41mm) of precipitation. In Joliet during February, snow falls for 9.5 days and regularly aggregates up to 3.7" (94mm) of snow.
• Naperville - February »
  In Naperville during February, snow falls for 9.1 days and regularly aggregates up to 1.69" (43mm) of snow. In Naperville, in February, during 9.1 snowfall days, 1.69" (43mm) of snow is typically accumulated.
• Springfield - February »
  In Springfield, in February, snow falls for 7.2 days, with typically accumulated 2.13" (54mm) of snow. In Springfield in February, it is raining for 5.8 days, with typically 1.22" (31mm) of accumulated precipitation.
• Peoria - February »
  In Peoria in February, during 6.8 snowfall days, 1.57" (40mm) of snow is typically accumulated. In Peoria, in February, snow falls for 6.8 days, with typically accumulated 1.57" (40mm) of snow.
• Elgin - February »
  In Elgin, Illinois, in February, it is raining for 4.9 days, with typically 1.34" (34mm) of accumulated precipitation. On the last day of February, in Elgin sunrise is at 6:29 am and sunset at 5:41 pm CST.
• Waukegan - February »
  The month with the most snowfall in Waukegan is February, when snow falls for 9.8 days and typically aggregates up to 2.6" (66mm) of snow. In Waukegan during February, snow falls for 9.8 days and regularly aggregates up to 2.6" (66mm) of snow.
• Champaign - February »
  In Champaign in February, during 7 snowfall days, 1.77" (45mm) of snow is typically accumulated. In Champaign, during February, snow falls for 7 days and regularly aggregates up to 1.77" (45mm) of snow.
• Cicero - February »
  In Cicero, Illinois, in February, during 8.8 snowfall days, 1.54" (39mm) of snow is typically accumulated. In Cicero in February, during 4 rainfall days, 0.51" (13mm) of precipitation is typically accumulated.
• Bloomington - February »
  In Bloomington, in February, snow falls for 7.8 days, with typically accumulated 2.13" (54mm) of snow. In Bloomington, during February, snow falls for 7.8 days and regularly aggregates up to 2.13" (54mm) of snow.