July weather forecast
Heppner, OR

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Weather in July

July in Heppner, Oregon, is a moderately hot summer month, with an average temperature fluctuating between 83.1°F (28.4°C) and 59.5°F (15.3°C).

Temperature

July, known for its average high temperature of 83.1°F (28.4°C) and an average low temperature of 59.5°F (15.3°C), is the warmest month.

Humidity

The months with the lowest humidity are July and August, with an average relative humidity of 39%.

Rainfall

The month with the least rainfall is July, when the rain falls for 4.3 days and typically collects 0.24" (6mm) of precipitation.

Snowfall

June through August are months without snowfall.

Daylight

The average length of the day in July is 15h and 14min.
On the first day of July, sunrise is at 5:14 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:26 pm PDT.

Sunshine

July and August, with an average of 12h of sunshine, are months with the most sunshine.

UV index

With an average maximum UV index of 7, July is the month with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 7 during July translates into the following directions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Updated: Jul 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year?

July proves to be the warmest month, recording an average peak temperature of 83.1°F (28.4°C) and a minimum temperature of 59.5°F (15.3°C).

How hot is July?

The high-temperature, in July, in Heppner, records 83.1°F (28.4°C), while the low-temperature is 59.5°F (15.3°C).

What are the least humid months?

July and August, with an average relative humidity of 39%, are the least humid months.

What is the average humidity in July?

In Heppner, the average relative humidity in July is 39%.

What is the driest month?

July is the month with the least rainfall. Rain falls for 4.3 days and accumulates 0.24" (6mm) of precipitation.

How many days does it rain in July?

In July, the rain falls for 4.3 days. Throughout July, 0.24" (6mm) of precipitation is accumulated.

When it does not snow?

June through August are months without snowfall.

How many hours of daylight does Heppner have in July?

The average day length in July is 15h and 14min.

What time are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:14 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:26 pm PDT.

What are the months with the most sunshine?

The months with the most sunshine are July and August, with an average of 12h of sunshine.

How long on average sun shines in July?

The average sunshine duration in July is 12h.

When is the highest UV index?

With an average maximum UV index of 7, July is the month with the highest UV index.

How high is the UV index in July?

The average daily maximum UV index in July in Heppner is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Heppner, OR

Average temperature in July - Heppner, OR
  • Average high temperature in July: 83.1°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 July: 59.5°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 July
Heppner, OR

Average pressure in July - Heppner, OR
  • Average pressure in July: 29.94"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 July
Heppner, OR

Average wind speed in July - Heppner, OR
  • Average wind speed in July: 8mph

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 July
Heppner, OR

Average humidity in July - Heppner, OR
  • Average humidity in July: 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 July
Heppner, OR

Average rainfall in July - Heppner, OR
  • Average rainfall in July: 0.24"

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 July
Heppner, OR

Average rainfall days in July - Heppner, OR
  • Average rainfall days in July: 4.3 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 July
Heppner, OR

Average snowfall in July - Heppner, OR
  • Average snowfall in July: 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 July
Heppner, OR

Average snowfall days in July - Heppner, OR
  • Average snowfall days in July: 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 July /
Average sunshine in July
Heppner, OR

Average daylight in July / Average sunshine in July - Heppner, OR
  • Average daylight in July: 15h and 1min

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 July: 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 July
Heppner, OR

Average sunshine days in July - Heppner, OR
  • Average sunshine days in July: 24.4 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 July
Heppner, OR

Average UV index in July - Heppner, OR
  • Average UV index in July: 7

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 July
Heppner, OR

Average cloud cover in July - Heppner, OR
  • Average cloud cover in July: 9

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 July
Heppner, OR

Average visibility in July - Heppner, OR
  • Average visibility in July: 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).

Heppner, Oregon, USA

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