April weather forecast
Saint Marys, OH

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Weather in April

April is a refreshing spring month in Saint Marys, Ohio, with an average temperature varying between 42.4°F (5.8°C) and 59.5°F (15.3°C).

Temperature

With the onset of April, Saint Marys's weather sees a temperature rise, transitioning from a chilly 47.1°F (8.4°C) in March to a mild 59.5°F (15.3°C). Throughout April, the nighttime temperature averages to an icy 42.4°F (5.8°C).

Humidity

In Saint Marys, Ohio, the average relative humidity in April is 76%.

Rainfall

In April, in Saint Marys, the rain falls for 16.3 days. Throughout April, 2.95" (75mm) of precipitation is accumulated. In Saint Marys, during the entire year, the rain falls for 161.4 days and collects up to 29.25" (743mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In April, in Saint Marys, it is snowing for 1.5 days. Throughout April, 0.39" (10mm) of snow is accumulated. In Saint Marys, during the entire year, snow falls for 44.7 days and aggregates up to 12.32" (313mm) of snow.

Daylight

The average length of the day in April is 13h and 19min.
On the first day of the month, sunrise is at 7:19 am and sunset at 8:02 pm. On the last day of April, in Saint Marys, sunrise is at 6:36 am and sunset at 8:32 pm EDT.

Sunshine

In April, the average sunshine in Saint Marys, Ohio, is 7.1h.

UV index

The average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: In April, the average maximum UV index of 4 translates into the following recommendations:
Take precautions - Protection against sun damage is advised. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average April temperature in Saint Marys?

The average high-temperature, in April, in Saint Marys, is 59.5°F (15.3°C), while the average low-temperature is 42.4°F (5.8°C).

What is the average humidity in April in Saint Marys?

In Saint Marys, the average relative humidity in April is 76%.

How many days does it rain in April in Saint Marys?

In Saint Marys, Ohio, in April, during 16.3 rainfall days, 2.95" (75mm) of precipitation is typically accumulated.

How much does it snow in Saint Marys in April?

In April, it is snowing for 1.5 days. Throughout April, 0.39" (10mm) of snow is accumulated.

How many hours of daylight does Saint Marys have in April?

The average day length in April in Saint Marys is 13h and 19min.

When are sunrise and sunset in April in Saint Marys?

In April, on the first day of the month, sunrise is at 7:19 am and sunset at 8:02 pm. On the last day of the month, in Saint Marys, sunrise is at 6:36 am and sunset at 8:32 pm EDT.

How many hours of sunshine does Saint Marys have in April?

In Saint Marys, Ohio, the average sunshine duration in April is 7.1h.

What is the UV index reading in April in Saint Marys?

In April, the average daily maximum UV index in Saint Marys is 4. A UV Index reading of 3 to 5 represents a moderate health threat from 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 April
Saint Marys, OH

Average temperature in April - Saint Marys, OH
  • Average high temperature in April: 59.5°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in April: 42.4°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in April
Saint Marys, OH

Average pressure in April - Saint Marys, OH
  • Average pressure in April: 29.96"Hg

The months with the highest atmospheric pressure are January and November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in April
Saint Marys, OH

Average wind speed in April - Saint Marys, OH
  • Average wind speed in April: 10mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average humidity in April
Saint Marys, OH

Average humidity in April - Saint Marys, OH
  • Average humidity in April: 76%

The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (75%).

Average rainfall in April
Saint Marys, OH

Average rainfall in April - Saint Marys, OH
  • Average rainfall in April: 2.95"

The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (1.85").

Average rainfall days in April
Saint Marys, OH

Average rainfall days in April - Saint Marys, OH
  • Average rainfall days in April: 16.3 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (7.4 days).

Average snowfall in April
Saint Marys, OH

Average snowfall in April - Saint Marys, OH
  • Average snowfall in April: 0.39"

The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in April
Saint Marys, OH

Average snowfall days in April - Saint Marys, OH
  • Average snowfall days in April: 1.5 days

The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in April /
Average sunshine in April
Saint Marys, OH

Average daylight in April / Average sunshine in April - Saint Marys, OH
  • Average daylight in April: 13h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in April: 7h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

Average sunshine days in April
Saint Marys, OH

Average sunshine days in April - Saint Marys, OH
  • Average sunshine days in April: 11.7 days

The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (9.4 days).

Average UV index in April
Saint Marys, OH

Average UV index in April - Saint Marys, OH
  • Average UV index in April: 4

The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in April
Saint Marys, OH

Average cloud cover in April - Saint Marys, OH
  • Average cloud cover in April: 49

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in April
Saint Marys, OH

Average visibility in April - Saint Marys, OH
  • Average visibility in April: 6mi

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

Saint Marys, Ohio, USA

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