March weather forecast
Green Bay, WI

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The sun setting over Green Bay in Wisconsin
The sun setting over Green Bay in Wisconsin

Weather in March

The onset of spring in March brings a respite from harsh winter temperatures in Green Bay, with significant rise in temperatures alongside an increase in rainfall. Average highs and lows for the month range from 25.5°F (-3.6°C) to 38.5°F (3.6°C) making the weather slightly more endurable. This change of weather brings a spring in the steps of locals and tourists as they prepare to welcome much-awaited warm temperatures. Green Bay residents also experience increased daylight hours and more sunshine as the month progresses. March consists of more rainy days than snowy days, marking the beginning of the transition from snow-clad winter to vibrant spring.

Temperature

March signals a shift in the average high-temperature, moving from February's freezing cold 25.9°F (-3.4°C) to a wintry 38.5°F (3.6°C). The average temperature during March nights dips to a freezing cold 25.5°F (-3.6°C).

Humidity

In March, the average relative humidity is 81%.

Rainfall

In Green Bay, in March, it is raining for 9.2 days, with typically 1.73" (44mm) of accumulated precipitation. In Green Bay, during the entire year, the rain falls for 130.8 days and collects up to 24.8" (630mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In March, it is snowing for 9.6 days. Throughout March, 3.15" (80mm) of snow is accumulated. In Green Bay, during the entire year, snow falls for 63.7 days and aggregates up to 23.27" (591mm) of snow.

Ocean temperature

In Green Bay, the average seawater temperature in March is 36.3°F (2.4°C).
Note: During swimming, this scenario is excessively cold, hazardous, and can lead to fatality. Hypothermia ensues swiftly without suitable insulated waterproof wear.

Daylight

The average length of the day in March is 11h and 58min.
On the first day of March, sunrise is at 6:27 am and sunset at 5:40 pm CST. On the last day of the month, sunrise is at 6:33 am and sunset at 7:18 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 Green Bay, the average sunshine in March is 5.5h.

UV index

In Green Bay, the average daily maximum UV index in March is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: A daily high UV index of 2 in March leads to these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.

Frequently asked questions

How cold is March in Green Bay?

An average high-temperature, in March, in Green Bay, is 38.5°F (3.6°C) and the average low-temperature is 25.5°F (-3.6°C).

What is the average humidity in March?

In Green Bay, the average relative humidity in March is 81%.

How many days does it rain in March?

In Green Bay, in March, it is raining for 9.2 days, with typically 1.73" (44mm) of accumulated precipitation.

How many days does it snow in March in Green Bay?

In March, it is snowing for 9.6 days. Throughout March, 3.15" (80mm) of snow is accumulated.

What is the ocean temperature in March?

In Green Bay, Wisconsin, the average seawater temperature in March is 36.3°F (2.4°C). For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

What is the average length of the day in March?

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

When are sunrise and sunset in March?

In March, on the first day of the month, sunrise is at 6:27 am and sunset at 5:40 pm CST. On the last day of the month, in Green Bay, sunrise is at 6:33 am and sunset at 7:18 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 long on average sun shines in March?

In March, the average sunshine duration is 5.5h.

How high is the UV index in March?

In March, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe 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
Green Bay, WI

Average temperature in March - Green Bay, WI
  • Average high temperature in March: 38.5°F

The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (22.6°F).

  • Average low temperature in March: 25.5°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).

Average pressure in March
Green Bay, WI

Average pressure in March - Green Bay, WI
  • Average pressure in March: 30.09"Hg

The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in March
Green Bay, WI

Average wind speed in March - Green Bay, WI
  • Average wind speed in March: 9.4mph

The windiest months (with the highest average wind speed) are January and February (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (7.2mph).

Average humidity in March
Green Bay, WI

Average humidity in March - Green Bay, WI
  • Average humidity in March: 81%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and May (76%).

Average rainfall in March
Green Bay, WI

Average rainfall in March - Green Bay, WI
  • Average rainfall in March: 1.73"

The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is January (1.18").

Average rainfall days in March
Green Bay, WI

Average rainfall days in March - Green Bay, WI
  • Average rainfall days in March: 9.2 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is February (3.7 days).

Average snowfall in March
Green Bay, WI

Average snowfall in March - Green Bay, WI
  • Average snowfall in March: 3.15"

The month with the highest snowfall is February (5.79").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in March
Green Bay, WI

Average snowfall days in March - Green Bay, WI
  • Average snowfall days in March: 9.6 days

The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in March
Green Bay, WI

Average sea temperature in March - Green Bay, WI
  • Average sea temperature in March: 36.3°F

The best month for swimming (with the highest average sea temperature) is August (67.6°F).
The coldest month (with the lowest average sea temperature) is February (36.1°F).

Average daylight in March /
Average sunshine in March
Green Bay, WI

Average daylight in March / Average sunshine in March - Green Bay, WI
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in March: 5h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).

Average sunshine days in March
Green Bay, WI

Average sunshine days in March - Green Bay, WI
  • Average sunshine days in March: 14.3 days

The months with the most sunshine days are September and November (17 days).
The month with the least sunshine days is April (11.6 days).

Average UV index in March
Green Bay, WI

Average UV index in March - Green Bay, WI
  • Average UV index in March: 2

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in March
Green Bay, WI

Average cloud cover in March - Green Bay, WI
  • Average cloud cover in March: 54

The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 33).

Average visibility in March
Green Bay, WI

Average visibility in March - Green Bay, WI
  • Average visibility in March: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).

Green Bay, Wisconsin, USA

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