March weather forecast
Saint Marys, IA

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Weather in March

March, the first month of the spring in Saint Marys, is a frosty month, with an average temperature fluctuating between 47.8°F (8.8°C) and 32.5°F (0.3°C).

Temperature

The shift into March brings a noticeable increase in the average high-temperature, soaring from a wintry 32.5°F (0.3°C) in February to a frosty 47.8°F (8.8°C). March witnesses an average nighttime temperature of 32.5°F (0.3°C).

Humidity

In Saint Marys, Iowa, the average relative humidity in March is 75%.

Rainfall

In March, in Saint Marys, the rain falls for 9.5 days. Throughout March, 1.22" (31mm) of precipitation is accumulated. In Saint Marys, during the entire year, the rain falls for 118.9 days and collects up to 18.62" (473mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Saint Marys, in March, during 4.6 snowfall days, 1.42" (36mm) of snow is typically accumulated. Throughout the year, in Saint Marys, there are 31.9 snowfall days, and 10.12" (257mm) of snow is accumulated.

Daylight

In Saint Marys, Iowa, the average length of the day in March is 11h and 58min.
On the first day of the month, sunrise is at 6:47 am and sunset at 6:06 pm CST. On the last day of March, sunrise is at 6:58 am and sunset at 7:39 pm CDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from CDT to CST.

Sunshine

In March, the average sunshine in Saint Marys is 6.1h.

UV index

The average daily maximum UV index in March is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In March, a regular UV index of 3 translates into these guidelines:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

What is the average March temperature in Saint Marys?

The high-temperature, in March, in Saint Marys, records 47.8°F (8.8°C), while the low-temperature is 32.5°F (0.3°C).

What is the average humidity in March in Saint Marys?

In Saint Marys, the average relative humidity in March is 75%.

How many days does it rain in March in Saint Marys?

In Saint Marys, in March, it is raining for 9.5 days, with typically 1.22" (31mm) of accumulated precipitation.

How much does it snow in Saint Marys in March?

In Saint Marys, in March, during 4.6 snowfall days, 1.42" (36mm) of snow is typically accumulated.

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

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

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

On the first day of March in Saint Marys, Iowa, sunrise is at 6:47 am and sunset at 6:06 pm CST. On the last day of the month, sunrise is at 6:58 am and sunset at 7:39 pm CDT.

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

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. DST ends Sunday, November 3. 2024, at 2:00 am.

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

The average sunshine duration in March in Saint Marys, Iowa, is 6.1h.

What is the UV index intensity in March in Saint Marys?

The average daily maximum UV index in March in Saint Marys is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
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 Marys, IA

Average temperature in March - Saint Marys, IA
  • Average high temperature in March: 47.8°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in March: 32.5°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

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Average pressure in March
Saint Marys, IA

Average pressure in March - Saint Marys, IA
  • Average pressure in March: 30.07"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in March
Saint Marys, IA

Average wind speed in March - Saint Marys, IA
  • Average wind speed in March: 10.3mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

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Average humidity in March
Saint Marys, IA

Average humidity in March - Saint Marys, IA
  • Average humidity in March: 75%

The months with the highest relative humidity are January and June (82%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in March
Saint Marys, IA

Average rainfall in March - Saint Marys, IA
  • Average rainfall in March: 1.22"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is December (0.55").

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Average rainfall days in March
Saint Marys, IA

Average rainfall days in March - Saint Marys, IA
  • Average rainfall days in March: 9.5 days

The months with the highest number of rainy days are May and June (15.9 days).
The month with the least rainy days is January (3.4 days).

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Average snowfall in March
Saint Marys, IA

Average snowfall in March - Saint Marys, IA
  • Average snowfall in March: 1.42"

The month with the highest snowfall is February (3.03").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in March
Saint Marys, IA

Average snowfall days in March - Saint Marys, IA
  • Average snowfall days in March: 4.6 days

The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in March /
Average sunshine in March
Saint Marys, IA

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

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

  • Average sunshine in March: 6h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in March
Saint Marys, IA

Average sunshine days in March - Saint Marys, IA
  • Average sunshine days in March: 16.6 days

The month with the most sunshine days is December (21.9 days).
The month with the least sunshine days is June (11 days).

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Average UV index in March
Saint Marys, IA

Average UV index in March - Saint Marys, IA
  • Average UV index in March: 3

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in March
Saint Marys, IA

Average cloud cover in March - Saint Marys, IA
  • Average cloud cover in March: 49

The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in March
Saint Marys, IA

Average visibility in March - Saint Marys, IA
  • Average visibility in March: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Saint Marys, Iowa, USA

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