July weather forecast
Saint Helens, OR

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Weather in July

July is a moderately hot summer month in Saint Helens, Oregon, with an average temperature ranging between max 75.4°F (24.1°C) and min 46.6°F (8.1°C).

Temperature

July comes with a subtle rise, with the average high-temperature adjusting from a refreshing 67.6°F (19.8°C) in June to a moderately hot 75.4°F (24.1°C). July nights see a notable contrast from daytime highs, with the nighttime temperature averaging at a chilly 46.6°F (8.1°C).

Humidity

July and August, with an average relative humidity of 72%, are the least humid months.

Rainfall

The month with the least rainfall is July, when the rain falls for 5.9 days and typically collects 0.31" (8mm) of precipitation.

Snowfall

In Saint Helens, snow does not fall in May through October.

Daylight

In July, the average length of the day in Saint Helens is 15h and 18min.
On the first day of July, sunrise is at 5:25 am and sunset at 9:05 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 8:41 pm PDT.

Sunshine

The average sunshine in July is 10.2h.

UV index

The month with the highest UV index is July, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In July, a daily maximum UV index of 5 leads to the following instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Updated: Aug 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are July temperatures?

An average high-temperature, in July, in Saint Helens, is 75.4°F (24.1°C) and the average low-temperature is 46.6°F (8.1°C).

What are the least humid months?

The months with the lowest humidity are July and August, with an average relative humidity of 72%.

What is the average humidity in July?

In July, the average relative humidity is 72%.

What is the driest month?

The month with the least rainfall is July, when the rain falls for 5.9 days and typically collects 0.31" (8mm) of precipitation.

How much does it rain in July?

In Saint Helens, in July, it is raining for 5.9 days, with typically 0.31" (8mm) of accumulated precipitation.

When it does not snow?

In Saint Helens, snow does not fall in May through October.

How many hours of daylight does Saint Helens have in July?

In Saint Helens, the average day length in July is 15h and 18min.

When is the sunrise / sunset in July?

On the first day of July, sunrise is at 5:25 am and sunset at 9:05 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 8:41 pm PDT.

How many hours of sunshine does Saint Helens have in July?

The average sunshine duration in July is 10.2h.

When is the highest UV index in Saint Helens?

July is the month with the highest UV index, with an average maximum UV index of 5.

What is the UV index intensity in July?

The average daily maximum UV index in July is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
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
Saint Helens, OR

Average temperature in July - Saint Helens, OR
  • Average high temperature in July: 75.4°F

The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (41.9°F).

  • Average low temperature in July: 46.6°F

The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (31.8°F).

Average pressure in July
Saint Helens, OR

Average pressure in July - Saint Helens, OR
  • Average pressure in July: 30.04"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

Average wind speed in July
Saint Helens, OR

Average wind speed in July - Saint Helens, OR
  • Average wind speed in July: 3.8mph

The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).

Average humidity in July
Saint Helens, OR

Average humidity in July - Saint Helens, OR
  • Average humidity in July: 72%

The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are July and August (72%).

Average rainfall in July
Saint Helens, OR

Average rainfall in July - Saint Helens, OR
  • Average rainfall in July: 0.31"

The wettest month (with the highest rainfall) is January (2.64").
The driest month (with the least rainfall) is July (0.31").

Average rainfall days in July
Saint Helens, OR

Average rainfall days in July - Saint Helens, OR
  • Average rainfall days in July: 5.9 days

The month with the highest number of rainy days is March (16 days).
The month with the least rainy days is July (5.9 days).

Average snowfall in July
Saint Helens, OR

Average snowfall in July - Saint Helens, OR
  • Average snowfall in July: 0"

The month with the highest snowfall is January (1.97").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in July
Saint Helens, OR

Average snowfall days in July - Saint Helens, OR
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in July /
Average sunshine in July
Saint Helens, OR

Average daylight in July / Average sunshine in July - Saint Helens, OR
  • Average daylight in July: 15h and 2min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in July: 10h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 42min).

Average sunshine days in July
Saint Helens, OR

Average sunshine days in July - Saint Helens, OR
  • Average sunshine days in July: 23.7 days

The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is February (12.1 days).

Average UV index in July
Saint Helens, OR

Average UV index in July - Saint Helens, OR
  • Average UV index in July: 5

The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is November (UV index 1).

Average cloud cover in July
Saint Helens, OR

Average cloud cover in July - Saint Helens, OR
  • Average cloud cover in July: 35

The month with the most cloud cover is March (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in July
Saint Helens, OR

Average visibility in July - Saint Helens, OR
  • Average visibility in July: 5mi

The months with the highest visibility are July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, September, October, November and December (4mi).

Saint Helens, Oregon, USA

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