July weather forecastGresham, OR

July
Weather in July
July is the pinnacle of summer in Gresham, noted for its hot temperatures and bright, sunny days. An impressive rise in temperature to a high of 79.3°F (26.3°C) is observed, making it the hottest month of the year. This period in the city is utmost suitable for recreational activities as the days are long and full of sunshine. The blue skies and summer heat remain dominant as we transition into August.Temperature
The shift from June to July is marked by a slight increase in the average high-temperature, moving from a pleasant 71.2°F (21.8°C) to a moderately hot 79.3°F (26.3°C). During July, Gresham detects a significant contrast from its daytime temperatures, with nights averaging at a fresh 50.9°F (10.5°C).Humidity
In Gresham, the average relative humidity in July is 65%.Rainfall
July is the month with the least rainfall. Rain falls for 4.9 days and accumulates 0.31" (8mm) of precipitation.Snowfall
In Gresham, snow does not fall in April through October.Daylight
In Gresham, the average length of the day in July is 15h and 16min.On the first day of the month, sunrise is at 5:25 am and sunset at 9:02 pm. On the last day of July, sunrise is at 5:53 am and sunset at 8:38 pm PDT.
Sunshine
July and August, with an average of 10.9h of sunshine, are months with the most sunshine.UV index
July is the month with the highest UV index in Gresham, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 6 in July interprets into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. 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 Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Gresham, OR
- Average high temperature in July: 79.3°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 July: 50.9°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 July
Gresham, OR
- Average pressure in July: 30.03"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 July
Gresham, OR
- Average wind speed in July: 3.7mph
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 July
Gresham, OR
- Average humidity in July: 65%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (64%).
Average rainfall in July
Gresham, OR
- Average rainfall in July: 0.31"
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 July
Gresham, OR
- Average rainfall days in July: 4.9 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 July
Gresham, OR
- Average snowfall in July: 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 July
Gresham, OR
- Average snowfall days in July: 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 July /
Average sunshine in July
Gresham, OR
- Average daylight in July: 15h and 18min
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: 10h and 54min
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 July
Gresham, OR
- Average sunshine days in July: 25 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 July
Gresham, OR
- Average UV index in July: 6
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 July
Gresham, OR
- Average cloud cover in July: 26
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 July
Gresham, OR
- Average visibility in July: 5mi
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).





