March weather forecast
Saint Catharines, Canada

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Weather in March

March, the first month of the spring in Saint Catharines, is a wintry month, with temperature in the range of an average high of 3.8°C (38.8°F) and an average low of -1.5°C (29.3°F).

Temperature

Saint Catharines's March weather indicates a minor increase in high-temperatures, edging from February's subzero cold -0.5°C (31.1°F) to an icy 3.8°C (38.8°F). March nights cool down to an average low-temperature of -1.5°C (29.3°F).

Humidity

In March, the average relative humidity is 78%.

Rainfall

In March, in Saint Catharines, the rain falls for 13.3 days. Throughout March, 60mm (2.36") of precipitation is accumulated. In Saint Catharines, Canada, during the entire year, the rain falls for 177.2 days and collects up to 786mm (30.94") of precipitation.

Snowfall

January through May, October through December are months with snowfall in Saint Catharines. In Saint Catharines, during March, snow falls for 9.3 days and regularly aggregates up to 40mm (1.57") of snow. Throughout the year, there are 58.5 snowfall days, and 403mm (15.87") of snow is accumulated.

Sea temperature

In March, the average sea temperature is 1.8°C (35.2°F).
Note: In swimming, this scenario poses immediate life-threatening danger. Breathing control is totally lost and logical thinking nearly impossible. Wearing a specialized swimsuit is critical to limit thermal loss.

Daylight

The average length of the day in March in Saint Catharines is 11h and 58min.
On the first day of the month, sunrise is at 6:51 am and sunset at 6:06 pm EST. On the last day of March, in Saint Catharines, sunrise is at 6:59 am and sunset at 7:42 pm EDT.
Note: On Sunday, 10. March 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, 03. November 2024, at 2:00 am; consequently, the time zone reverts from EDT to EST.

Sunshine

The average sunshine in March is 5.4h.

UV index

In March, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: During March, 2 as the daily maximum UV index converts into the following advice:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Frequently asked questions

How cold does it get in Saint Catharines in March?

An average high-temperature, in March, in Saint Catharines, is 3.8°C (38.8°F) and the average low-temperature is -1.5°C (29.3°F).

What is the average humidity in March in Saint Catharines?

In March, the average relative humidity in Saint Catharines is 78%.

How much does it rain in Saint Catharines in March?

In March, in Saint Catharines, Canada, the rain falls for 13.3 days. Throughout March, 60mm (2.36") of precipitation is accumulated.

How many days does it snow in March in Saint Catharines?

In March, it is snowing for 9.3 days. Throughout March, 40mm (1.57") of snow is accumulated.

How cold is the water in March in Saint Catharines?

In Saint Catharines, the average seawater temperature in March is 1.8°C (35.2°F). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

What is the average length of the day in March in Saint Catharines?

In Saint Catharines, Canada, the average day length in March is 11h and 58min.

When is the sunrise / sunset in March in Saint Catharines?

In March, on the first day of the month, sunrise is at 6:51 am and sunset at 6:06 pm EST. On the last day of the month, in Saint Catharines, Canada, sunrise is at 6:59 am and sunset at 7:42 pm EDT.

When does Daylight Saving Time (DST) start in March in Saint Catharines?

On Sunday, 10. March 2024, at 2:00 am, Daylight Saving Time starts in Saint Catharines, Canada, and the time zone changes from EST to EDT. DST ends on Sunday, 03. November 2024, at 2:00 am.

How many hours of sunshine does Saint Catharines have in March?

In Saint Catharines, Canada, the average sunshine duration in March is 5.4h.

How high is the UV index in March in Saint Catharines?

In March, the average daily maximum UV index in Saint Catharines, Canada, is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Saint Catharines, Canada

Average temperature in March - Saint Catharines, Canada
  • Average high temperature in March: 3.8°C

The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (-1.4°C).

  • Average low temperature in March: -1.5°C

The month with the highest average low temperature is July (18.6°C).
The coldest month (with the lowest average low temperature) is January (-6.1°C).

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Average pressure in March
Saint Catharines, Canada

Average pressure in March - Saint Catharines, Canada
  • Average pressure in March: 1018.4mbar

The month with the highest atmospheric pressure is November (1018.5mbar).
The month with the lowest atmospheric pressure is June (1013.3mbar).

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Average wind speed in March
Saint Catharines, Canada

Average wind speed in March - Saint Catharines, Canada
  • Average wind speed in March: 17.8km/h

The windiest month (with the highest average wind speed) is January (21km/h).
The calmest month (with the lowest average wind speed) is July (12.1km/h).

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Average humidity in March
Saint Catharines, Canada

Average humidity in March - Saint Catharines, Canada
  • Average humidity in March: 78%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is September (74%).

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Average rainfall in March
Saint Catharines, Canada

Average rainfall in March - Saint Catharines, Canada
  • Average rainfall in March: 60mm

The wettest month (with the highest rainfall) is July (80mm).
The driest months (with the least rainfall) are September and November (55mm).

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Average rainfall days in March
Saint Catharines, Canada

Average rainfall days in March - Saint Catharines, Canada
  • Average rainfall days in March: 13.3 days

The month with the highest number of rainy days is October (18.9 days).
The month with the least rainy days is February (8.8 days).

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Average snowfall in March
Saint Catharines, Canada

Average snowfall in March - Saint Catharines, Canada
  • Average snowfall in March: 40mm

The month with the highest snowfall is February (127mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in March
Saint Catharines, Canada

Average snowfall days in March - Saint Catharines, Canada
  • Average snowfall days in March: 9.3 days

The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in March
Saint Catharines, Canada

Average sea temperature in March - Saint Catharines, Canada
  • Average sea temperature in March: 1.8°C

The best month for swimming (with the highest average sea temperature) is August (23.2°C).
The coldest month (with the lowest average sea temperature) is February (1.7°C).

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Average daylight in March /
Average sunshine in March
Saint Catharines, Canada

Average daylight in March / Average sunshine in March - Saint Catharines, Canada
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in March: 5h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

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Average sunshine days in March
Saint Catharines, Canada

Average sunshine days in March - Saint Catharines, Canada
  • Average sunshine days in March: 10.5 days

The month with the most sunshine days is September (13 days).
The month with the least sunshine days is January (7.5 days).

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Average UV index in March
Saint Catharines, Canada

Average UV index in March - Saint Catharines, Canada
  • Average UV index in March: 2

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in March
Saint Catharines, Canada

Average cloud cover in March - Saint Catharines, Canada
  • Average cloud cover in March: 56

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in March
Saint Catharines, Canada

Average visibility in March - Saint Catharines, Canada
  • Average visibility in March: 9km

The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January and February (8km).

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Saint Catharines, Canada

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