August weather forecastHeppner, OR
August
Weather in August
August, the last month of the summer in Heppner, is another warm month, with an average temperature fluctuating between 82.2°F (27.9°C) and 60.8°F (16°C).Temperature
August's average high-temperature is a still warm 82.2°F (27.9°C), maintaining a close comparison with July's 83.1°F (28.4°C). Heppner records an average nighttime low of 60.8°F (16°C) in August.Humidity
The months with the lowest humidity are July and August, with an average relative humidity of 39%.Rainfall
In August, in Heppner, the rain falls for 4.1 days. Throughout August, 0.47" (12mm) of precipitation is accumulated. In Heppner, during the entire year, the rain falls for 131.9 days and collects up to 13.54" (344mm) of precipitation.Snowfall
In Heppner, snow does not fall in June through August.Daylight
In Heppner, the average length of the day in August is 14h and 2min.On the first day of the month, sunrise is at 5:43 am and sunset at 8:25 pm. On the last day of August, sunrise is at 6:19 am and sunset at 7:36 pm PDT.
Sunshine
The months with the most sunshine are July and August, with an average of 12h of sunshine.UV index
The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 5 in August converts into the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Heppner, OR
- Average high temperature in August: 82.2°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 August: 60.8°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 August
Heppner, OR
- Average pressure in August: 29.92"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 August
Heppner, OR
- Average wind speed in August: 7.5mph
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 August
Heppner, OR
- Average humidity in August: 39%
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 August
Heppner, OR
- Average rainfall in August: 0.47"
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 August
Heppner, OR
- Average rainfall days in August: 4.1 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 August
Heppner, OR
- Average snowfall in August: 0"
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 August
Heppner, OR
- Average snowfall days in August: 0 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 August /
Average sunshine in August
Heppner, OR
- Average daylight in August: 14h and 0min
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 August: 12h and 0min
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 August
Heppner, OR
- Average sunshine days in August: 24.3 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 August
Heppner, OR
- Average UV index in August: 5
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 August
Heppner, OR
- Average cloud cover in August: 10
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 August
Heppner, OR
- Average visibility in August: 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).
