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

March weather forecast and climate
Naperville, IL

The scenic view of a covered bridge over a river along the famous Naperville Riverwalk in Naperville, Illinois, reflections in the below water
The scenic view of a covered bridge over a river along the famous Naperville Riverwalk in Naperville, Illinois, reflections in the below water
The first month of the spring, March, is a frosty month in Naperville, Illinois, with temperature in the range of an average high of 45.1°F (7.3°C) and an average low of 31.1°F (-0.5°C).

Temperature

In March, the average high-temperature increases, from a wintry 32.4°F (0.2°C) in February, to a frosty 45.1°F (7.3°C). The average low-temperature, in Naperville, is 31.1°F (-0.5°C).

Humidity

The average relative humidity in March is 76%.

Rainfall

In Naperville, during 9.8 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. Throughout the year, in Naperville, there are 132.2 rainfall days, and 16.22" (412mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Naperville, Illinois. In Naperville, during March, snow falls for 5.3 days and regularly aggregates up to 0.59" (15mm) of snow. In Naperville, during the entire year, snow falls for 38.7 days, and aggregates up to 6.93" (176mm) of snow.

Daylight

The average length of the day in March is 12h.

Sunshine

In Naperville, the average sunshine in March is 6.2h.

UV index

In March, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: In March, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in March in Naperville?

In March, in Naperville, Illinois, the average high-temperature is 45.1°F (7.3°C), and the average low-temperature is 31.1°F (-0.5°C).

What is the average humidity in March in Naperville?

In March, the average relative humidity in Naperville, Illinois, is 76%.

How much does it rain in Naperville in March?

In March, in Naperville, Illinois, the rain falls for 9.8 days. Throughout March, 0.87" (22mm) of precipitation is accumulated.

How many days does it snow in March in Naperville?

In March, in Naperville, Illinois, it is snowing for 5.3 days. Throughout March, 0.59" (15mm) of snow is accumulated.

What is the average length of the day in March in Naperville?

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

How many hours of sunshine does Naperville have in March?

In March, the average sunshine in Naperville is 6.2h.

What is the UV index intensity in March in Naperville?

In Naperville, Illinois, the average daily maximum UV index in March is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in March - Naperville, IL
  • Average high temperature in March: 7.3°C

The warmest month (with the highest average high temperature) is July (27.6°C).
The month with the lowest average high temperature is January (-2°C).

  • Average low temperature in March: -0.5°C

The month with the highest average low temperature is July (18.4°C).
The coldest month (with the lowest average low temperature) is January (-8.3°C).

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

Months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (73%).

Average rainfall in March - Naperville, IL
  • Average rainfall in March: 22mm

The wettest month (with the highest rainfall) is May (53mm).
The driest month (with the lowest rainfall) is December (18mm).

Average rainfall days in March - Naperville, IL
  • Average rainfall days in March: 9.8 days

The month with the highest number of rainy days is July (17.3 days).
The month with the lowest number of rainy days is February (4.4 days).

Average snowfall in March - Naperville, IL
  • Average snowfall in March: 15mm

The month with the highest snowfall is January (47mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

Average snowfall days in March - Naperville, IL
  • Average snowfall days in March: 5.3 days

The month with the highest number of snowfall days is January (11.1 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average daylight in March / Average sunshine in March - Naperville, 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: 6.2h

Months with most sunshine are July and August (Average sunshine: 10h).
The month with least sunshine is January (Average sunshine: 3.8h).

Average UV index in March - Naperville, IL
  • Average UV index in March: 3

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