April weather forecast and climate
Grafton, ND

April is a frosty spring month in Grafton, North Dakota, with average temperature ranging between min 34°F (1.1°C) and max 48.9°F (9.4°C).

Temperature

In April, the average high-temperature increases considerably, from a wintry 32.5°F (0.3°C) in March, to a chilly 48.9°F (9.4°C). In Grafton, North Dakota, the average low-temperature is 34°F (1.1°C).

Humidity

The average relative humidity in Grafton is 67%.

Rainfall

In April, in Grafton, North Dakota, the rain falls for 10.2 days. Throughout April, 0.98" (25mm) of precipitation is accumulated. In Grafton, during the entire year, the rain falls for 97.8 days and collects up to 15.83" (402mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Grafton. In Grafton, North Dakota, during April, snow falls for 5.4 days and regularly aggregates up to 1.69" (43mm) of snow. Throughout the year, in Grafton, there are 70.4 snowfall days, and 18.46" (469mm) of snow is accumulated.

Daylight

In Grafton, the average length of the day in April is 13.7h.

Sunshine

The average sunshine in April is 7.3h.

UV index

In Grafton, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: In April, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 April in Grafton?

In April, the average high-temperature is 48.9°F (9.4°C), and the average low-temperature is 34°F (1.1°C).

What is the average humidity in April in Grafton?

The average relative humidity in April in Grafton, North Dakota, is 67%.

How many days does it rain in April in Grafton?

In Grafton, during April, the rain falls for 10.2 days and regularly aggregates up to 0.98" (25mm) of precipitation.

How many days does it snow in April in Grafton?

In April, in Grafton, it is snowing for 5.4 days. Throughout April, 1.69" (43mm) of snow is accumulated.

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

The average length of the day in April is 13.7h.

How long on average sun shines in April in Grafton?

The average sunshine in April in Grafton is 7.3h.

How high is the UV index in April in Grafton?

In Grafton, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in April - Grafton, ND
  • Average high temperature in April: 9.4°C

The warmest month (with the highest average high temperature) is August (26.9°C).
The month with the lowest average high temperature is January (-9.6°C).

  • Average low temperature in April: 1.1°C

The month with the highest average low temperature is July (15.5°C).
The coldest month (with the lowest average low temperature) is January (-17.3°C).

Average pressure in April - Grafton, ND
  • Average pressure in April: 1015.6mbar

The month with the highest atmospheric pressure is February (1021.5mbar).
The month with the lowest atmospheric pressure is June (1010.9mbar).

Average wind speed in April - Grafton, ND
  • Average wind speed in April: 16.2km/h

The windiest month (with the highest average wind speed) is October (17km/h).
The calmest months (with the lowest average wind speed) are July and August (13.1km/h).

Average humidity in April - Grafton, ND
  • Average humidity in April: 67%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (59%).

Average rainfall in April - Grafton, ND
  • Average rainfall in April: 25mm

The wettest month (with the highest rainfall) is June (71mm).
The driest months (with the least rainfall) are January and February (14mm).

Average rainfall days in April - Grafton, ND
  • Average rainfall days in April: 10.2 days

The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (1.6 days).

Average snowfall in April - Grafton, ND
  • Average snowfall in April: 43mm

The month with the highest snowfall is December (100mm).
Months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in April - Grafton, ND
  • Average snowfall days in April: 5.4 days

The month with the highest number of snowfall days is January (14.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in April / Average sunshine in April - Grafton, ND
  • Average daylight in April: 13.7h

The month with the longest days is June (Average daylight: 16h).
The month with the shortest days is December (Average daylight: 8.4h).

  • Average sunshine in April: 7.3h

The month with the most sunshine is July (Average sunshine: 11h).
The month with the least sunshine is January (Average sunshine: 3.2h).

Average sunshine days in April - Grafton, ND
  • Average sunshine days in April: 14.9 days

The month with the most sunshine days is August (19.8 days).
The month with the least sunshine days is June (11.5 days).

Average UV index in April - Grafton, ND
  • Average UV index in April: 3

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February and November (UV index 1).

Average cloud cover in April - Grafton, ND
  • Average cloud cover in April: 50

The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 24).

Average visibility in April - Grafton, ND
  • Average visibility in April: 9km

Months with the highest visibility are May, July, August and September (10km).
Months with the lowest visibility are January, February, March and December (8km).