The city of Chicago observed the first day of meteorological spring on Sunday, but when does the spring season officially start?
The National Weather Service uses different days to delineate the start of “meteorological” seasons, focusing on the calendar instead of the sun.
As such, the first day of meteorological spring occurs on March 1 every year, with summer beginning on June 1.
When does astronomical spring start? When does daylight saving time begin? Here’s a list of key dates you’ll need to remember for this month.
When does spring officially start?
According to NASA, the first day of astronomical spring this year will fall on Friday, March 20. The official start time for the season will be 9:46 a.m. Central time.
What about daylight saving time?
According to federal law, daylight saving time begins at 2 a.m. on the second Sunday of the month of March. This year, that date occurs on its earliest possible day, occurring on March 8.
At 2 a.m., clocks spring forward an hour, moving sunset to just after 6:40 p.m. in the city of Chicago.
What key daylight milestones are approaching?
On Monday, sunset is set for 5:42 p.m., and the Chicago area will receive 11 hours and 18 minutes of daylight.
On March 16, the Chicago area will get 12 hours of daylight for the first time in 2026, and by the end of the month the city will be getting 12 hours and 43 minutes of daylight per day, having gained nearly an hour and a half over a single month.
How does the weather change in March?
According to the National Weather Service, March opens with an average high temperature of 41 degrees in the city of Chicago, and by the end of the month, that average jumps to 53 degrees.
What’s more, March is typically the month when Chicago sees its final snowfall of at least one inch or more, with that date typically falling on March 20.
The Chicago area typically sees its last measurable snowfall, defined as 0.1 inches or more, on April 2.
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