Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The highest temperatures are recorded in August, with averages reaching a high of 80.4°F (26.9°C) and a low of 53.4°F (11.9°C).Humidity
With an average relative humidity of 64%, August is the least humid month.Rainfall
In Gresham, during August, the rain falls for 4.4 days and regularly aggregates up to 0.39" (10mm) of precipitation. In Gresham, during the entire year, the rain falls for 165.6 days and collects up to 34.65" (880mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In August, the average length of the day is 14h and 3min.On the first day of August, sunrise is at 5:54 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:48 pm PDT.
Sunshine
The months with the most sunshine are July and August, with an average of 10.9h of sunshine.UV index
The average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 during August leads to these advisories:
Undertake precautions - Obligation exists to protect against skin and eye damage. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the hottest?
What is the temperature in August?
What is the least humid month?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
What is the average length of the day in August?
What time are sunrise and sunset in August?
What are the months with the most sunshine?
How many hours of sunshine does Gresham have in August?
What is the UV index reading in August?
Average temperature in August
Gresham, OR
- Average high temperature in August: 80.4°F
The warmest month (with the highest average high temperature) is August (80.4°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in August: 53.4°F
The month with the highest average low temperature is August (53.4°F).
The coldest month (with the lowest average low temperature) is December (33.8°F).
Average pressure in August
Gresham, OR
- Average pressure in August: 30"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in August
Gresham, OR
- Average wind speed in August: 3.5mph
The windiest month (with the highest average wind speed) is January (6.8mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).
Average humidity in August
Gresham, OR
- Average humidity in August: 64%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (64%).
Average rainfall in August
Gresham, OR
- Average rainfall in August: 0.39"
The wettest month (with the highest rainfall) is December (5.31").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in August
Gresham, OR
- Average rainfall days in August: 4.4 days
The month with the highest number of rainy days is March (19.3 days).
The month with the least rainy days is August (4.4 days).
Average snowfall in August
Gresham, OR
- Average snowfall in August: 0"
The month with the highest snowfall is March (1.73").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Gresham, OR
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Gresham, 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: 10h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and February (Average sunshine: 4h and 12min).
Average sunshine days in August
Gresham, OR
- Average sunshine days in August: 24.6 days
The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (9.7 days).
Average UV index in August
Gresham, OR
- Average UV index in August: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
Gresham, OR
- Average cloud cover in August: 24
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in August
Gresham, OR
- Average visibility in August: 6mi
The months with the highest visibility are August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, November and December (5mi).
Gresham, Oregon, USA
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