April weather forecastJohnstown, PA
April
Weather in April
For those waiting for winter to end in Johnstown, Pennsylvania, April offers a glimmer of hope. Moderate rainfall indicates a shift from snowy to rainy weather, indicating the arrival of spring. Changes in weather might give rise to unpredictable weather conditions causing fluctuations in pressure. Make sure to keep an umbrella handy as rainfall reaches a high of 1.93" (49mm) this month. The temperature continues the upward trend started in the previous month, while still keeping cool breezes as a reminder of the passing winter.Temperature
As Johnstown welcomes April, the average high-temperature sees a rise, transitioning from a frosty 44.2°F (6.8°C) in March to a refreshing 57°F (13.9°C). Johnstown observes an average low-temperature of 38.5°F (3.6°C) during April nights.Humidity
The average relative humidity in April is 79%.Rainfall
In Johnstown, in April, during 15.3 rainfall days, 1.93" (49mm) of precipitation is typically accumulated. In Johnstown, Pennsylvania, during the entire year, the rain falls for 152.7 days and collects up to 21.1" (536mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In April, it is snowing for 2.8 days. Throughout April, 0.83" (21mm) of snow is accumulated. Throughout the year, there are 47.7 snowfall days, and 18.23" (463mm) of snow is accumulated.Daylight
In Johnstown, the average length of the day in April is 13h and 19min.On the first day of April, sunrise is at 6:58 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 8:10 pm EDT.
Sunshine
In Johnstown, the average sunshine in April is 7.5h.UV index
The average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 3 in April, converts into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Stay sun-safe with clothing that is both closely woven and worn loosely. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Johnstown, PA
- Average high temperature in April: 57°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in April: 38.5°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in April
Johnstown, 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
Johnstown, PA
- Average wind speed in April: 8.9mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in April
Johnstown, PA
- Average humidity in April: 79%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is July (78%).
Average rainfall in April
Johnstown, PA
- Average rainfall in April: 1.93"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is November (1.1").
Average rainfall days in April
Johnstown, PA
- Average rainfall days in April: 15.3 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in April
Johnstown, PA
- Average snowfall in April: 0.83"
The month with the highest snowfall is March (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Johnstown, PA
- Average snowfall days in April: 2.8 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Johnstown, PA
- Average daylight in April: 13h and 18min
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: 7h and 30min
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 0min).
Average sunshine days in April
Johnstown, PA
- Average sunshine days in April: 11.1 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is May (9 days).
Average UV index in April
Johnstown, PA
- Average UV index in April: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Johnstown, PA
- Average cloud cover in April: 52
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in April
Johnstown, 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).
