March weather forecast
Port Byron, IL

Share

Weather in March

The first month of the spring, March, is a chilly month in Port Byron, Illinois, with temperature in the range of an average high of 46.8°F (8.2°C) and an average low of 32°F (0°C).

Temperature

March sees a rise in the average high-temperature, climbing from an icy 32.7°F (0.4°C) in February to a chilly 46.8°F (8.2°C). Port Byron, in the month of March, anticipates a consistent average low-temperature of 32°F (0°C).

Humidity

In March, the average relative humidity in Port Byron, Illinois, is 75%.

Rainfall

In Port Byron, in March, during 8.2 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Port Byron, during the entire year, the rain falls for 99.4 days and collects up to 9.57" (243mm) of precipitation.

Snowfall

Months with snowfall are January through April, September through December. In Port Byron, in March, snow falls for 3.1 days, with typically accumulated 0.55" (14mm) of snow. In Port Byron, during the entire year, snow falls for 24.5 days and aggregates up to 4.09" (104mm) of snow.

Daylight

In Port Byron, the average length of the day in March is 11h and 58min.
On the first day of the month, sunrise is at 6:34 am and sunset at 5:52 pm CST. On the last day of March, sunrise is at 6:44 am and sunset at 7:26 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 Port Byron, the average sunshine in March is 6.4h.

UV index

In Port Byron, the average daily maximum UV index in March is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In March, the average maximum UV index of 3 translates into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. To protect against the Sun's most potent rays, avoid direct exposure around midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Updated: Jul 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in March?

Port Byron in March has an average high-temperature of 46.8°F (8.2°C) and an average low-temperature of 32°F (0°C).

What is the average humidity in March?

In March, the average relative humidity is 75%.

How much does it rain in March?

In Port Byron, during March, the rain falls for 8.2 days and regularly aggregates up to 0.63" (16mm) of precipitation.

How many days does it snow in March?

In Port Byron, during March, snow falls for 3.1 days and regularly aggregates up to 0.55" (14mm) of snow.

How many hours of daylight does Port Byron have in March?

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

What time are sunrise and sunset in March?

On the first day of March, sunrise is at 6:34 am and sunset at 5:52 pm CST. On the last day of the month, sunrise is at 6:44 am and sunset at 7:26 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 Port Byron have in March?

In March, the average sunshine duration is 6.4h.

How high is the UV index in March?

In March, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to 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
Port Byron, IL

Average temperature in March - Port Byron, IL
  • Average high temperature in March: 46.8°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.2°F).

  • Average low temperature in March: 32°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).

Average pressure in March
Port Byron, IL

Average pressure in March - Port Byron, IL
  • Average pressure in March: 30.08"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in March
Port Byron, IL

Average wind speed in March - Port Byron, IL
  • Average wind speed in March: 10.3mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

Average humidity in March
Port Byron, IL

Average humidity in March - Port Byron, IL
  • Average humidity in March: 75%

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (71%).

Average rainfall in March
Port Byron, IL

Average rainfall in March - Port Byron, IL
  • Average rainfall in March: 0.63"

The wettest month (with the highest rainfall) is May (1.61").
The driest month (with the least rainfall) is December (0.35").

Average rainfall days in March
Port Byron, IL

Average rainfall days in March - Port Byron, IL
  • Average rainfall days in March: 8.2 days

The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is January (3.2 days).

Average snowfall in March
Port Byron, IL

Average snowfall in March - Port Byron, IL
  • Average snowfall in March: 0.55"

The month with the highest snowfall is January (1.26").
The months with the least snowfall are May, June, July and August (0").

Average snowfall days in March
Port Byron, IL

Average snowfall days in March - Port Byron, IL
  • Average snowfall days in March: 3.1 days

The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight in March /
Average sunshine in March
Port Byron, IL

Average daylight in March / Average sunshine in March - Port Byron, IL
  • 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 12min).

  • Average sunshine in March: 6h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in March
Port Byron, IL

Average sunshine days in March - Port Byron, IL
  • Average sunshine days in March: 19.8 days

The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is June (14.4 days).

Average UV index in March
Port Byron, IL

Average UV index in March - Port Byron, IL
  • Average UV index in March: 3

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in March
Port Byron, IL

Average cloud cover in March - Port Byron, IL
  • Average cloud cover in March: 49

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in March
Port Byron, IL

Average visibility in March - Port Byron, 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).

Port Byron, Illinois, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location