April weather forecastHeppner, OR
April
Weather in April
April in Heppner, Oregon, is a mild spring month, with an average temperature varying between 38.7°F (3.7°C) and 56.8°F (13.8°C).Temperature
April brings a slight increase in the average high-temperature, progressing from a chilly 48.9°F (9.4°C) in March to a mild 56.8°F (13.8°C). An average nighttime temperature of 38.7°F (3.7°C) is observed during April.Humidity
In April, the average relative humidity is 62%.Rainfall
In Heppner, in April, it is raining for 14.4 days, with typically 1.34" (34mm) of accumulated precipitation. In Heppner, during the entire year, the rain falls for 131.9 days and collects up to 13.54" (344mm) of precipitation.Snowfall
Months with snowfall in Heppner are January through May, September through December. In Heppner, in April, snow falls for 1 days, with typically accumulated 0.31" (8mm) of snow. Throughout the year, there are 31.3 snowfall days, and 18.54" (471mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 33min.On the first day of April, sunrise is at 6:36 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:04 pm PDT.
Sunshine
In April, the average sunshine is 9.8h.UV index
The average daily maximum UV index in April is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The average daily UV index of 3 in April transforms into the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Heppner, OR
- Average high temperature in April: 56.8°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is December (37.9°F).
- Average low temperature in April: 38.7°F
The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (27.1°F).
Average pressure in April
Heppner, OR
- Average pressure in April: 30.01"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in April
Heppner, OR
- Average wind speed in April: 9.4mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is September (7.2mph).
Average humidity in April
Heppner, OR
- Average humidity in April: 62%
The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are July and August (39%).
Average rainfall in April
Heppner, OR
- Average rainfall in April: 1.34"
The wettest month (with the highest rainfall) is February (1.81").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days in April
Heppner, OR
- Average rainfall days in April: 14.4 days
The month with the highest number of rainy days is March (17 days).
The month with the least rainy days is August (4.1 days).
Average snowfall in April
Heppner, OR
- Average snowfall in April: 0.31"
The month with the highest snowfall is February (6.61").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Heppner, OR
- Average snowfall days in April: 1 days
The month with the highest number of snowfall days is December (9.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Heppner, OR
- Average daylight in April: 13h and 36min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in April: 9h and 48min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 5h and 18min).
Average sunshine days in April
Heppner, OR
- Average sunshine days in April: 13.3 days
The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is March (9.5 days).
Average UV index in April
Heppner, OR
- Average UV index in April: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in April
Heppner, OR
- Average cloud cover in April: 36
The months with the most cloud cover are January and February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in April
Heppner, OR
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
