Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
The shift from June to July is marked by a slight increase in the average high-temperature, moving from a comfortable 67.6°F (19.8°C) to a moderately hot 75.4°F (24.1°C). Against the high July temperatures, Saint Helens records an average drop to a frosty 46.6°F (8.1°C) at night.Humidity
July and August, with an average relative humidity of 72%, are the least humid months in Saint Helens.Rainfall
The month with the least rainfall in Saint Helens, Oregon, is July, when the rain falls for 5.9 days and typically collects 0.31" (8mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in July in Saint Helens is 15h and 18min.On the first day of the month, sunrise is at 5:25 am and sunset at 9:05 pm. On the last day of July, sunrise is at 5:54 am and sunset at 8:41 pm PDT.
Sunshine
The average sunshine in July is 10.2h.UV index
July is the month with the highest UV index, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: An average UV index of 5 in July transforms into this advice:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What are July temperatures in Saint Helens?
What are the least humid months in Saint Helens?
What is the average humidity in July in Saint Helens?
What is the driest month in Saint Helens?
How much does it rain in Saint Helens in July?
When it does not snow in Saint Helens?
How many hours of daylight does Saint Helens have in July?
When is the sunrise / sunset in July in Saint Helens?
How many hours of sunshine does Saint Helens have in July?
When is the highest UV index in Saint Helens?
What is the UV index intensity in July in Saint Helens?
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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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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