March weather forecast
Swansea, IL

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Weather in March

The first month of the spring, March, is a cool month in Swansea, Illinois, with an average temperature fluctuating between 54.5°F (12.5°C) and 37.9°F (3.3°C).

Temperature

With the onset of March, Swansea's average high-temperature experiences a rise, moving from February's icy 42.4°F (5.8°C) to a fresh 54.5°F (12.5°C). During the month of March, an average temperature of 37.9°F (3.3°C) is noted during the nights.

Humidity

The average relative humidity in March is 76%.

Rainfall

In March, the rain falls for 14.3 days. Throughout March, 2.72" (69mm) of precipitation is accumulated. In Swansea, during the entire year, the rain falls for 147.1 days and collects up to 35.43" (900mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. March is the last month it regularly snows. During 2.1 snowfall days, in March, Swansea aggregates 0.98" (25mm) of snow. In Swansea, during the entire year, snow falls for 21.1 days and aggregates up to 8.11" (206mm) of snow.

Daylight

The average length of the day in March is 11h and 59min.
On the first day of the month, sunrise is at 6:30 am and sunset at 5:53 pm CST. On the last day of March, sunrise is at 6:44 am and sunset at 7:22 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 is 6.2h.

UV index

The average daily maximum UV index in March is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 4 in March interprets into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in March in Swansea?

In March, the average high-temperature and low-temperature are 54.5°F (12.5°C) and 37.9°F (3.3°C) respectively.

What is the average humidity in March?

The average relative humidity in March is 76%.

How much does it rain in March?

In Swansea, during March, the rain falls for 14.3 days and regularly aggregates up to 2.72" (69mm) of precipitation.

What is the last month it snows?

March is the last month it regularly snows. During 2.1 snowfall days, in March, Swansea aggregates 0.98" (25mm) of snow.

What is the average length of the day in March?

In Swansea, the average day length in March is 11h and 59min.

When are sunrise and sunset in March?

In March, on the first day of the month, sunrise is at 6:30 am and sunset at 5:53 pm CST. On the last day of the month, sunrise is at 6:44 am and sunset at 7:22 pm CDT.

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

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 Swansea have in March?

In Swansea, the average sunshine duration in March is 6.2h.

What is the UV index reading in March?

The average daily maximum UV index in March in Swansea is 4. A UV Index reading of 3 to 5 represents a moderate health threat 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
Swansea, IL

Average temperature in March - Swansea, IL
  • Average high temperature in March: 54.5°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in March: 37.9°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in March
Swansea, IL

Average pressure in March - Swansea, IL
  • 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 (29.92"Hg).

Average wind speed in March
Swansea, IL

Average wind speed in March - Swansea, IL
  • Average wind speed in March: 9.1mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).

Average humidity in March
Swansea, IL

Average humidity in March - Swansea, IL
  • Average humidity in March: 76%

The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in March
Swansea, IL

Average rainfall in March - Swansea, IL
  • Average rainfall in March: 2.72"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.93").

Average rainfall days in March
Swansea, IL

Average rainfall days in March - Swansea, IL
  • Average rainfall days in March: 14.3 days

The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (6.8 days).

Average snowfall in March
Swansea, IL

Average snowfall in March - Swansea, IL
  • Average snowfall in March: 0.98"

The month with the highest snowfall is January (2.4").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in March
Swansea, IL

Average snowfall days in March - Swansea, IL
  • Average snowfall days in March: 2.1 days

The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight in March /
Average sunshine in March
Swansea, IL

Average daylight in March / Average sunshine in March - Swansea, IL
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in March: 6h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in March
Swansea, IL

Average sunshine days in March - Swansea, IL
  • Average sunshine days in March: 13.7 days

The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is May (12.3 days).

Average UV index in March
Swansea, IL

Average UV index in March - Swansea, IL
  • Average UV index in March: 4

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in March
Swansea, IL

Average cloud cover in March - Swansea, IL
  • Average cloud cover in March: 48

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in March
Swansea, IL

Average visibility in March - Swansea, IL
  • 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).

Swansea, Illinois, USA

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