November Weather in St. Catharines Canada

Daily high temperatures decrease by 11°F, from 52°F to 42°F, rarely falling below 31°F or exceeding 63°F.

Daily low temperatures decrease by 9°F, from 41°F to 32°F, rarely falling below 22°F or exceeding 49°F.

For reference, on July 19, the hottest day of the year, temperatures in St. Catharines typically range from 66°F to 80°F, while on January 29, the coldest day of the year, they range from 20°F to 31°F.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on November. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Hanawa, Japan (6,166 miles away) is the far-away foreign place with temperatures most similar to St. Catharines (view comparison).

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The month of November in St. Catharines experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 49% to 57%.

The clearest day of the month is November 2, with clear, mostly clear, or partly cloudy conditions 51% of the time.

For reference, on January 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 64%, while on August 8, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 67%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In St. Catharines, the chance of a wet day over the course of November is decreasing, starting the month at 29% and ending it at 24%.

For reference, the year's highest daily chance of a wet day is 34% on July 31, and its lowest chance is 15% on February 5.

Over the course of November in St. Catharines, the chance of a day with only rain decreases from 29% to 20%, the chance of a day with mixed snow and rain increases from 0% to 3%, and the chance of a day with only snow increases from 0% to 2%.

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during November in St. Catharines is gradually decreasing, starting the month at 2.0 inches, when it rarely exceeds 3.5 inches or falls below 0.9 inches, and ending the month at 1.5 inches, when it rarely exceeds 2.9 inches or falls below 0.6 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day snowfall during November in St. Catharines is increasing, starting the month at 0.1 inches, when it rarely exceeds 0.4 inches or falls below -0.0 inches, and ending the month at 1.5 inches, when it rarely exceeds 3.9 inches.

Over the course of November in St. Catharines, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 1 minute, implying an average daily decrease of 2 minutes, 6 seconds, and weekly decrease of 14 minutes, 43 seconds.

The shortest day of the month is November 30, with 9 hours, 14 minutes of daylight and the longest day is November 1, with 10 hours, 15 minutes of daylight.

The latest sunrise of the month in St. Catharines is 7:53 AM on November 2 and the earliest sunrise is 59 minutes earlier at 6:55 AM on November 3.

The latest sunset is 6:07 PM on November 1 and the earliest sunset is 1 hour, 25 minutes earlier at 4:42 PM on November 30.

Daylight saving time (DST) starts at 1:00 AM on November 3, 2024, shifting sunrise and sunset to be an hour later.

For reference, on June 20, the longest day of the year, the Sun rises at 5:37 AM and sets 15 hours, 23 minutes later, at 9:00 PM, while on December 21, the shortest day of the year, it rises at 7:45 AM and sets 8 hours, 59 minutes later, at 4:44 PM.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

The figure below presents a compact representation of key lunar data for November 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in St. Catharines is essentially constant during November, remaining around 0% throughout.

For reference, on July 31, the muggiest day of the year, there are muggy conditions 41% of the time, while on November 2, the least muggy day of the year, there are muggy conditions 0% of the time.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in St. Catharines is increasing during November, increasing from 11.9 miles per hour to 13.1 miles per hour over the course of the month.

For reference, on January 12, the windiest day of the year, the daily average wind speed is 14.8 miles per hour, while on August 3, the calmest day of the year, the daily average wind speed is 8.0 miles per hour.

The hourly average wind direction in St. Catharines throughout November is predominantly from the west, with a peak proportion of 47% on November 26.

St. Catharines is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in St. Catharines is rapidly decreasing during November, falling by 7°F, from 52°F to 45°F, over the course of the month.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in St. Catharines typically lasts for 6.9 months (210 days), from around April 11 to around November 7, rarely starting before March 25 or after April 28, and rarely ending before October 21 or after November 24.

During November in St. Catharines, the chance that a given day is within the growing season is very rapidly decreasing falling from 67% to 4% over the course of the month.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in St. Catharines are essentially constant during November, remaining within 14°F of 2,683°F throughout.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in St. Catharines is gradually decreasing during November, falling by 0.9 kWh, from 2.4 kWh to 1.5 kWh, over the course of the month.