April weather forecast and climate
Marion, IL

Weather in April

April in Marion, Illinois, is an enjoyable spring month, with average temperature fluctuating between 66.4°F (19.1°C) and 48.7°F (9.3°C).

Temperature

In April, the average high-temperature increases, from a fresh 55.2°F (12.9°C) in March, to an enjoyable 66.4°F (19.1°C). In April, the average low-temperature is 48.7°F (9.3°C).

Humidity

In Marion, the average relative humidity is 77%.

Rainfall

The month with the most rainfall in Marion is April when the rain falls for 13.8 days and typically aggregates up to 3.11" (79mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. April is the last month it regularly snows. During 0.5 snowfall days, Marion aggregates 0.08" (2mm) of snow. In Marion, during the entire year, snow falls for 14.5 days, and aggregates up to 4.13" (105mm) of snow.

Daylight

In Marion, the average length of the day is 13.2h.

Sunshine

The average sunshine in Marion is 8.6h.

UV index

In April, the average daily maximum UV index in Marion is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 5 interpret into the following advice:
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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in April in Marion?

In Marion, Illinois, the average relative humidity in April is 77%.

What is the rainiest month in Marion?

April is the month with the most rainfall in Marion, Illinois. Rain falls for 13.8 days and accumulates 3.11" (79mm) of precipitation.

How many days does it rain in April in Marion?

In April, in Marion, the rain falls for 13.8 days. Throughout April, 3.11" (79mm) of precipitation is accumulated.

What is the last month it snows in Marion?

April is the last month it regularly snows. During 0.5 snowfall days, in April, Marion aggregates 0.08" (2mm) of snow.

What is the average length of the day in April in Marion?

The average length of the day in April is 13.2h.

How long on average sun shines in April in Marion?

In Marion, Illinois, the average sunshine in April is 8.6h.

What is the UV index reading in April in Marion?

In Marion, Illinois, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in April
Marion, IL

Average temperature in April - Marion, IL
  • Average high temperature in April: 66.4°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.6°F).

  • Average low temperature in April: 48.7°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

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Average pressure in April
Marion, IL

Average pressure in April - Marion, IL
  • Average pressure in April: 29.96"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.94").

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Average wind speed in April
Marion, IL

Average wind speed in April - Marion, IL
  • Average wind speed in April: 9.1mph

The windiest months (with the highest average wind speed) are January and February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

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Average humidity in April
Marion, IL

Average humidity in April - Marion, IL
  • Average humidity in April: 77%

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

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Average rainfall in April
Marion, IL

Average rainfall in April - Marion, IL
  • Average rainfall in April: 3.11"

The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.1").

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Average rainfall days in April
Marion, IL

Average rainfall days in April - Marion, IL
  • Average rainfall days in April: 13.8 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is November (7.8 days).

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Average snowfall in April
Marion, IL

Average snowfall in April - Marion, IL
  • Average snowfall in April: 0.08"

Months with the highest snowfall are January and February (0.94").
Months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in April
Marion, IL

Average snowfall days in April - Marion, IL
  • Average snowfall days in April: 0.5 days

The month with the highest number of snowfall days is February (4.3 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in April /
Average sunshine in April
Marion, IL

Average daylight in April / Average sunshine in April - Marion, IL
  • Average daylight in April: 13.2h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in April: 8.6h

Months with the most sunshine are June and July (Average sunshine: 10.5h).
The month with the least sunshine is January (Average sunshine: 4.6h).

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Average sunshine days in April
Marion, IL

Average sunshine days in April - Marion, IL
  • Average sunshine days in April: 13.7 days

The month with the most sunshine days is October (20.6 days).
The month with the least sunshine days is July (12.9 days).

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Average UV index in April
Marion, IL

Average UV index in April - Marion, IL
  • Average UV index in April: 5

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

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Average cloud cover in April
Marion, IL

Average cloud cover in April - Marion, IL
  • Average cloud cover in April: 41

The month with the most cloud cover is February (Cloud cover 51).
Months with the least cloud cover are June, August and September (Cloud cover 28).

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Average visibility in April
Marion, IL

Average visibility in April - Marion, IL
  • Average visibility in April: 6mi

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

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