Fall arrives on Monday: Three things you need to know

Ready or not, the autumn equinox arrives on Monday, and there are a few important things you’ll want to keep in mind as we transition into the season.

We will officially welcome the fall season on Monday, September 22, at 2:19 p.m. EDT (18:19 UTC).

Despite the more obvious signs of the changing seasons, such as falling leaves and pumpkin spice everything, there are a few important things to keep in mind as we transition out of the summer months.

Fall Equinox, Sept 22, 2025 DATE AND TIME

Daylight hours decrease

From the first day of fall to the first day of winter, the amount of daylight hours drops from 12 hours and eight minutes, to just nine hours and 27 minutes.

It's certainly the time of year when we notice mornings and nights getting much darker.

FALL 2025: Daylight hours decrease in Toronto

Clocks fall back

The fall season also marks the twice-annual time change, with clocks set to fall back at 2 a.m. local time on Sunday, November 2. Daylight Saving Time (DST) is observed in all of Canada with some exceptions, including most of Saskatchewan.

RELATED: What would permanent Daylight Saving Time look like in Canada?

Fall 2025: Daylight saving time ends at 2 a.m. local time

The idea behind DST is to maximize the amount of sunlight we see throughout the day, though the switchover isn't universally popular. Among the potential drawbacks to pushing the clocks back 60 minutes, include depression, as the decreased hours of daylight are difficult to manage for many, and a loss of natural vitamin D due to the drop in the amount of available sunlight through the winter.

Bundle up, the average high temperatures fall quickly

We know the fall season is a transitional one as we approach the winter months, and with the looming frosty season ahead comes a major loss in average daytime highs. In some places, the drop is significant.

FALL EVERGREEN: Average temperature drop - West

In Edmonton, Alta., for example, the city will lose as much as 22°C between September 22 and December 21.

Meanwhile, Toronto, Ont., falls by nearly 20°C, while Halifax, N.S., takes a 17-degree hit.

FALL EVERGREEN: Average temperature drop - national

Reality check: Winter is coming...

Visit our Complete Guide to Fall 2025 for an in depth look at the Fall Forecast, tips to plan for it and much more!