April weather forecastSaint Johns, PA
April
Weather in April
April is a moderate spring month in Saint Johns, Pennsylvania, with an average temperature fluctuating between 55.8°F (13.2°C) and 38.1°F (3.4°C).Temperature
With the onset of April, Saint Johns experiences a temperature shift, with the average high-temperature moving from a frosty 43.7°F (6.5°C) in March to a moderate 55.8°F (13.2°C). During April, Saint Johns witnesses a consistent average low-temperature of 38.1°F (3.4°C).Humidity
With an average relative humidity of 78%, April is the least humid month.Rainfall
In Saint Johns, during April, the rain falls for 12.6 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, there are 111.5 rainfall days, and 11.34" (288mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Saint Johns, in April, during 0.8 snowfall days, 0.08" (2mm) of snow is typically accumulated. In Saint Johns, during the entire year, snow falls for 31.5 days and aggregates up to 7.28" (185mm) of snow.Daylight
In Saint Johns, the average length of the day in April is 13h and 20min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:29 pm. On the last day of April, sunrise is at 6:02 am and sunset at 8:00 pm EDT.
Sunshine
The average sunshine in April is 7.2h.UV index
The average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In April, the maximum UV index of 3 translates into these guidelines:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Saint Johns, PA
- Average high temperature in April: 55.8°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in April: 38.1°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in April
Saint Johns, PA
- Average pressure in April: 29.98"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in April
Saint Johns, PA
- Average wind speed in April: 8.3mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in April
Saint Johns, PA
- Average humidity in April: 78%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (78%).
Average rainfall in April
Saint Johns, PA
- Average rainfall in April: 1.14"
The wettest month (with the highest rainfall) is May (1.26").
The driest month (with the least rainfall) is September (0.55").
Average rainfall days in April
Saint Johns, PA
- Average rainfall days in April: 12.6 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in April
Saint Johns, PA
- Average snowfall in April: 0.08"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Saint Johns, PA
- Average snowfall days in April: 0.8 days
The month with the highest number of snowfall days is January (9.9 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 Johns, PA
- Average daylight in April: 13h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in April: 7h and 12min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in April
Saint Johns, PA
- Average sunshine days in April: 15.2 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is May (14.3 days).
Average UV index in April
Saint Johns, PA
- Average UV index in April: 3
The month with the highest UV index is July (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
Saint Johns, PA
- Average cloud cover in April: 52
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in April
Saint Johns, 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).
