July weather forecastManchester, WA
July
Weather in July
July is a moderately hot summer month in Manchester, Washington, with temperature in the range of an average low of 52.7°F (11.5°C) and an average high of 77°F (25°C).Temperature
The shift from June to July introduces a subtle increase in the average high-temperature, moving from an agreeable 69.4°F (20.8°C) to a warm 77°F (25°C). Manchester sees a consistent average low-temperature of 52.7°F (11.5°C) in July, indicating a substantial decrease from the day's temperature.Humidity
With an average relative humidity of 69%, July is the least humid month.Rainfall
The month with the least rainfall is July, when the rain falls for 6.2 days and typically collects 0.28" (7mm) of precipitation.Snowfall
April through October are months without snowfall.Ocean temperature
In Manchester, the average seawater temperature in July is 50.5°F (10.3°C).Note: Swimming in 50.5°F (10.3°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
In Manchester, the average length of the day in July is 15h and 31min.On the first day of July, sunrise is at 5:17 am and sunset at 9:11 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:45 pm PDT.
Sunshine
In Manchester, the average sunshine in July is 10.5h.UV index
The month with the highest UV index is July, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 6 during July, leads to the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Manchester, WA
- Average high temperature in July: 77°F
The warmest month (with the highest average high temperature) is August (77.2°F).
The month with the lowest average high temperature is December (43.2°F).
- Average low temperature in July: 52.7°F
The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (34.9°F).
Average pressure in July
Manchester, WA
- Average pressure in July: 30.05"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in July
Manchester, WA
- Average wind speed in July: 3.5mph
The windiest month (with the highest average wind speed) is March (5.5mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).
Average humidity in July
Manchester, WA
- Average humidity in July: 69%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is July (69%).
Average rainfall in July
Manchester, WA
- Average rainfall in July: 0.28"
The wettest months (with the highest rainfall) are January and December (2.05").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in July
Manchester, WA
- Average rainfall days in July: 6.2 days
The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is August (5.4 days).
Average snowfall in July
Manchester, WA
- Average snowfall in July: 0"
The month with the highest snowfall is February (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in July
Manchester, WA
- 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 sea temperature in July
Manchester, WA
- Average sea temperature in July: 50.6°F
The best month for swimming (with the highest average sea temperature) is August (53.2°F).
The coldest month (with the lowest average sea temperature) is February (45.3°F).
Average daylight in July /
Average sunshine in July
Manchester, WA
- Average daylight in July: 15h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in July: 10h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in July
Manchester, WA
- Average sunshine days in July: 22.4 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (11.8 days).
Average UV index in July
Manchester, WA
- 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
Manchester, WA
- Average cloud cover in July: 27
The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in July
Manchester, WA
- Average visibility in July: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, October, November and December (5mi).





