July weather forecast
Prosser, WA

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Weather in July

July is a tropical summer month in Prosser, Washington, with an average temperature ranging between min 62.2°F (16.8°C) and max 88.3°F (31.3°C).

Temperature

July brings the highest temperatures, with an average high of 88.3°F (31.3°C) and an average low of 62.2°F (16.8°C).

Humidity

July and August, with an average relative humidity of 37%, are the least humid months.

Rainfall

July is the month with the least rainfall. Rain falls for 3.6 days and accumulates 0.2" (5mm) of precipitation.

Snowfall

In Prosser, Washington, snow does not fall in April through August and October.

Daylight

In July, the average length of the day is 15h and 21min.
On the first day of July in Prosser, sunrise is at 5:11 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:30 pm PDT.

Sunshine

The months with the most sunshine in Prosser are July and August, with an average of 12h of sunshine.

UV index

July is the month with the highest UV index in Prosser, Washington, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 7 during July translates into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest in Prosser?

Prosser's July weather, with an average high temperature of 88.3°F (31.3°C) and an average low temperature of 62.2°F (16.8°C), tends to be the warmest of the year.

How hot does it get in Prosser in July?

The average high-temperature and low-temperature during July are 88.3°F (31.3°C) and 62.2°F (16.8°C) respectively.

What is the least humid month in Prosser?

The months with the lowest humidity in Prosser are July and August, with an average relative humidity of 37%.

What is the average humidity in July in Prosser?

In Prosser, the average relative humidity in July is 37%.

What is the driest month in Prosser?

The month with the least rainfall in Prosser is July, when the rain falls for 3.6 days and typically collects 0.2" (5mm) of precipitation.

How much does it rain in Prosser in July?

In July, in Prosser, the rain falls for 3.6 days. Throughout July, 0.2" (5mm) of precipitation is accumulated.

When it does not snow in Prosser?

In Prosser, Washington, snow does not fall in April through August and October.

What is the average length of the day in July in Prosser?

The average day length in July in Prosser is 15h and 21min.

When are sunrise and sunset in July in Prosser?

On the first day of July in Prosser, sunrise is at 5:11 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:30 pm PDT.

What are the months with the most sunshine in Prosser?

The months with the most sunshine are July and August, with an average of 12h of sunshine.

How long on average sun shines in July in Prosser?

In July, the average sunshine duration is 12h.

When is the highest UV index in Prosser?

July is the month with the highest UV index in Prosser, with an average maximum UV index of 7.

What is the UV index reading in July in Prosser?

The average daily maximum UV index in July is 7. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Prosser, WA

Average temperature in July - Prosser, WA
  • Average high temperature in July: 88.3°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (37.2°F).

  • Average low temperature in July: 62.2°F

The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is December (27°F).

Average pressure in July
Prosser, WA

Average pressure in July - Prosser, WA
  • Average pressure in July: 29.93"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

Average wind speed in July
Prosser, WA

Average wind speed in July - Prosser, WA
  • Average wind speed in July: 6.7mph

The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is December (5.6mph).

Average humidity in July
Prosser, WA

Average humidity in July - Prosser, WA
  • Average humidity in July: 37%

The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (37%).

Average rainfall in July
Prosser, WA

Average rainfall in July - Prosser, WA
  • Average rainfall in July: 0.2"

The wettest months (with the highest rainfall) are January and December (0.94").
The driest month (with the least rainfall) is July (0.2").

Average rainfall days in July
Prosser, WA

Average rainfall days in July - Prosser, WA
  • Average rainfall days in July: 3.6 days

The month with the highest number of rainy days is March (11.8 days).
The month with the least rainy days is July (3.6 days).

Average snowfall in July
Prosser, WA

Average snowfall in July - Prosser, WA
  • Average snowfall in July: 0"

The month with the highest snowfall is February (2.01").
The months with the least snowfall are April, May, June, July, August and October (0").

Average snowfall days in July
Prosser, WA

Average snowfall days in July - Prosser, WA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is December (4.6 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).

Average daylight in July /
Average sunshine in July
Prosser, WA

Average daylight in July / Average sunshine in July - Prosser, WA
  • 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: 12h and 0min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 12min).

Average sunshine days in July
Prosser, WA

Average sunshine days in July - Prosser, WA
  • Average sunshine days in July: 25.8 days

The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is February (15.5 days).

Average UV index in July
Prosser, WA

Average UV index in July - Prosser, 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
Prosser, WA

Average cloud cover in July - Prosser, WA
  • Average cloud cover in July: 9

The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 9).

Average visibility in July
Prosser, WA

Average visibility in July - Prosser, 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).

Prosser, Washington, USA

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