Chicago
Illinois, USA
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Chicago, IL

An aerial view of the city of Chicago in Illinois, on the shores of Lake Michigan, with a superb view of the sandy beach of Oak Street
An aerial view of the city of Chicago in Illinois, on the shores of Lake Michigan, with a superb view of the sandy beach of Oak Street
March, the first month of the spring, in Chicago, is still a cold month, with average temperature ranging between max 41.5°F (5.3°C) and min 32.2°F (0.1°C).

Temperature

In Chicago, the average high-temperature in March rises, from 32°F (0°C) in February, to a still wintry 41.5°F (5.3°C). The average low-temperature, in Chicago, is 32.2°F (0.1°C).

Humidity

The average relative humidity in Chicago is 77%.

Rainfall

In Chicago, in March, it is raining for 11.8 days, with typically 2.13" (54mm) of accumulated precipitation. Throughout the year, there are 160.2 rainfall days, and 36.97" (939mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall in Chicago. In Chicago, in March, during 6.1 snowfall days, 1.34" (34mm) of snow is typically accumulated. In Chicago, during the entire year, snow falls for 40.9 days, and aggregates up to 13.9" (353mm) of snow.

Ocean temperature

In Chicago, the average seawater temperature in March is 37.8°F (3.2°C).
Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

Daylight

The average length of the day in Chicago, Illinois, is 12h.

Sunshine

In Chicago, the average sunshine is 6.1h.

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 the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 2 transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in March in Chicago?

In March, in Chicago, Illinois, the average high-temperature is 41.5°F (5.3°C), and the average low-temperature is 32.2°F (0.1°C).

What is the average humidity in March in Chicago?

The average relative humidity in March is 77%.

How many days does it rain in March in Chicago?

In Chicago, in March, during 11.8 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.

How many days does it snow in March in Chicago?

In Chicago, Illinois, in March, snow falls for 6.1 days, with typically accumulated 1.34" (34mm) of snow.

How cold is the water in March in Chicago?

In March, the average ocean temperature is 37.8°F (3.2°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.

How many hours of daylight does Chicago have in March?

In March, the average length of the day in Chicago is 12h.

How long on average sun shines in March in Chicago?

In March, the average sunshine in Chicago is 6.1h.

What is the UV index intensity in March in Chicago?

In Chicago, Illinois, the average daily maximum UV index in March is 2. A UV Index of 2, and less, symbolizes a low health risk from the exposure to the Sun's UV radiation.
Average temperature in March - Chicago, IL
  • Average high temperature in March: 41.5°F

The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in March: 32.2°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

Average humidity in March - Chicago, IL
  • Average humidity in March: 77%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).

Average rainfall in March - Chicago, IL
  • Average rainfall in March: 2.13"

The wettest month (with the highest rainfall) is June (4.88").
The driest month (with the lowest rainfall) is December (1.65").

Average rainfall days in March - Chicago, IL
  • Average rainfall days in March: 11.8 days

The month with the highest number of rainy days is July (18.5 days).
The month with the lowest number of rainy days is February (5.5 days).

Average snowfall in March - Chicago, IL
  • Average snowfall in March: 1.34"

The month with the highest snowfall is February (3.54").
Months with the lowest snowfall are June, July, August, September and October (0").

Average snowfall days in March - Chicago, IL
  • Average snowfall days in March: 6.1 days

The month with the highest number of snowfall days is January (10.6 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average sea temperature in March - Chicago, IL
  • Average sea temperature in March: 37.8°F

The best month for swimming (with the highest average sea temperature) is August (73.9°F).
The coldest month (with the lowest average sea temperature) is February (36.9°F).

Average daylight in March / Average sunshine in March - Chicago, IL
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.2h).

  • Average sunshine in March: 6.1h

Months with most sunshine are July and August (Average sunshine: 10.6h).
The month with least sunshine is January (Average sunshine: 3.7h).

Average UV index in March - Chicago, IL
  • Average UV index in March: 2

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