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
An upsurge in temperatures occurs as March gives way to April, with average highs shifting from a chilly 46.9°F (8.3°C) to a moderate 59.4°F (15.2°C). Throughout the month of April, Rockhill witnesses an average low-temperature of 39.7°F (4.3°C).Humidity
In April, the average relative humidity is 76%.Rainfall
In April, the rain falls for 16.5 days. Throughout April, 2.87" (73mm) of precipitation is accumulated. In Rockhill, during the entire year, the rain falls for 164.3 days and collects up to 28.19" (716mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 1.3 snowfall days, in April, Rockhill aggregates 0.39" (10mm) of snow. In Rockhill, during the entire year, snow falls for 40.6 days and aggregates up to 17.91" (455mm) of snow.Daylight
In April, the average length of the day is 13h and 18min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:36 pm. On the last day of April, sunrise is at 6:11 am and sunset at 8:06 pm EDT.
Sunshine
The average sunshine in April is 8.1h.UV index
In Rockhill, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 3 in April translates into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature?
What is the average humidity in April?
How much does it rain in Rockhill in April?
What is the last month it snows?
How many hours of daylight does Rockhill have in April?
When are sunrise and sunset in April?
How many hours of sunshine does Rockhill have in April?
What is the UV index intensity in April?
Average temperature in April
Rockhill, PA
- Average high temperature in April: 59.4°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in April: 39.7°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in April
Rockhill, PA
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in April
Rockhill, PA
- Average wind speed in April: 7.4mph
The windiest month (with the highest average wind speed) is January (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in April
Rockhill, PA
- Average humidity in April: 76%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is July (75%).
Average rainfall in April
Rockhill, PA
- Average rainfall in April: 2.87"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in April
Rockhill, PA
- Average rainfall days in April: 16.5 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (9.5 days).
Average snowfall in April
Rockhill, PA
- Average snowfall in April: 0.39"
The month with the highest snowfall is January (5.24").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Rockhill, PA
- Average snowfall days in April: 1.3 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Rockhill, PA
- 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 24min).
- Average sunshine in April: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in April
Rockhill, PA
- Average sunshine days in April: 11.5 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in April
Rockhill, PA
- Average UV index in April: 3
The months with the highest UV index are May and June (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in April
Rockhill, PA
- Average cloud cover in April: 47
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in April
Rockhill, PA
- Average visibility in April: 6mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Rockhill, Pennsylvania, USA
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