Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The shift into April is characterized by a rise in the average high-temperature, transitioning from March's icy 40.6°F (4.8°C) to a fresh 54.3°F (12.4°C). Throughout April, Grafton's nights cool down to an average of 38.7°F (3.7°C).Humidity
April and October, with an average relative humidity of 72%, are the least humid months in Grafton.Rainfall
In April, the rain falls for 14.9 days. Throughout April, 2.6" (66mm) of precipitation is accumulated. In Grafton, Iowa, during the entire year, the rain falls for 134.3 days and collects up to 25.08" (637mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In April, in Grafton, it is snowing for 3.3 days. Throughout April, 2.48" (63mm) of snow is accumulated. In Grafton, during the entire year, snow falls for 57 days and aggregates up to 22.83" (580mm) of snow.Daylight
In April, the average length of the day is 13h and 27min.On the first day of the month, sunrise is at 6:52 am and sunset at 7:39 pm. On the last day of April, in Grafton, sunrise is at 6:05 am and sunset at 8:13 pm CDT.
Sunshine
In April, the average sunshine in Grafton is 7.5h.UV index
The average daily maximum UV index in April in Grafton is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 3 during April translates into the following directions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
What is the average April temperature in Grafton?
What are the least humid months in Grafton?
What is the average humidity in April in Grafton?
How many days does it rain in April in Grafton?
How many days does it snow in April in Grafton?
What is the average length of the day in April in Grafton?
When are sunrise and sunset in April in Grafton?
How many hours of sunshine does Grafton have in April?
How high is the UV index in April in Grafton?
Average temperature in April
Grafton, IA
- Average high temperature in April: 54.3°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (21.6°F).
- Average low temperature in April: 38.7°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9°F).
Average pressure in April
Grafton, IA
- Average pressure in April: 29.94"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in April
Grafton, IA
- Average wind speed in April: 10.8mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.4mph).
Average humidity in April
Grafton, IA
- Average humidity in April: 72%
The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are April and October (72%).
Average rainfall in April
Grafton, IA
- Average rainfall in April: 2.6"
The wettest month (with the highest rainfall) is June (4.13").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in April
Grafton, IA
- Average rainfall days in April: 14.9 days
The month with the highest number of rainy days is June (18.4 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in April
Grafton, IA
- Average snowfall in April: 2.48"
The month with the highest snowfall is February (5.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Grafton, IA
- Average snowfall days in April: 3.3 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Grafton, IA
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in April: 7h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in April
Grafton, IA
- Average sunshine days in April: 11.9 days
The month with the most sunshine days is October (18.1 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in April
Grafton, IA
- Average UV index in April: 3
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in April
Grafton, IA
- Average cloud cover in April: 49
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in April
Grafton, IA
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, September, October and November (6mi).
The months with the lowest visibility are January, February, July, August and December (5mi).
Grafton, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location
