July weather forecastWalla Walla, WA
July
Weather in July
July, the warmest month, introduces the height of summer with the mercury hitting a high of 84.7°F (29.3°C). Stretches of clear, sunny days, coupled with significantly reduced rainfall, mark the dominance of the sun in Walla's July climate. The extended daylight hours and high ultraviolet index warrant extra sun protection measures. Evenings can still be pleasantly fresh, providing relief from the scorching summer day heat. This month stands out for its relatively low relative humidity, a stark contrast to the winter months.Temperature
July, recognised by an average high temperature of 84.7°F (29.3°C) and a low of 59.2°F (15.1°C), is Walla's warmest month.Heat index
In July, the heat index is evaluated at 84.2°F (29°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.Heat index specifics point out values are for conditions of shade and a slight breeze. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Humidity
In July, the average relative humidity in Walla is 40%.Rainfall
July is the month with the least rainfall in Walla, Washington. Rain falls for 4.9 days and accumulates 0.35" (9mm) of precipitation.Snowfall
In Walla, snow does not fall in May through August and October.Daylight
In July, the average length of the day is 15h and 20min.On the first day of the month, sunrise is at 5:06 am and sunset at 8:48 pm. On the last day of July, in Walla, Washington, sunrise is at 5:35 am and sunset at 8:23 pm PDT.
Sunshine
The average sunshine in July is 12h.UV index
The month with the highest UV index in Walla is July, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: An average UV index of 7 in July transforms into this advice:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. 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. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Walla Walla, WA
- Average high temperature in July: 84.7°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (37.4°F).
- Average low temperature in July: 59.2°F
The month with the highest average low temperature is August (60.8°F).
The coldest month (with the lowest average low temperature) is December (27°F).
Average pressure in July
Walla Walla, WA
- Average pressure in July: 29.92"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed in July
Walla Walla, WA
- Average wind speed in July: 6.5mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is September (5.9mph).
Average humidity in July
Walla Walla, WA
- Average humidity in July: 40%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (39%).
Average rainfall in July
Walla Walla, WA
- Average rainfall in July: 0.35"
The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in July
Walla Walla, WA
- Average rainfall days in July: 4.9 days
The month with the highest number of rainy days is March (17.4 days).
The month with the least rainy days is July (4.9 days).
Average snowfall in July
Walla Walla, WA
- Average snowfall in July: 0"
The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days in July
Walla Walla, WA
- Average snowfall days in July: 0 days
The months with the highest number of snowfall days are February and December (6.1 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in July /
Average sunshine in July
Walla Walla, WA
- Average daylight in July: 15h and 18min
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: 12h and 0min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in July
Walla Walla, WA
- Average sunshine days in July: 24.4 days
The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is February (10 days).
Average UV index in July
Walla Walla, WA
- Average UV index in July: 7
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in July
Walla Walla, WA
- Average cloud cover in July: 10
The months with the most cloud cover are January, February and December (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in July
Walla Walla, WA
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
