July weather forecast
Washington, IA

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Weather in July

July, the same as June, is another warm summer month in Washington, Iowa, with an average temperature varying between 65.1°F (18.4°C) and 82°F (27.8°C).

Temperature

July proves to be the warmest month, recording an average peak temperature of 82°F (27.8°C) and a minimum temperature of 65.1°F (18.4°C).

Heat index

July's heat index is estimated at a hot 89.6°F (32°C). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.
Given the heat index, its values are aligned with shaded sites and gentle winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.

Humidity

The months with the highest humidity in Washington are January and July, with an average relative humidity of 83%.

Rainfall

In Washington, during July, the rain falls for 13.8 days and regularly aggregates up to 2.01" (51mm) of precipitation. In Washington, during the entire year, the rain falls for 123.7 days and collects up to 18.94" (481mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in July is 14h and 49min.
On the first day of July in Washington, sunrise is at 5:37 am and sunset at 8:43 pm. On the last day of the month, sunrise is at 6:01 am and sunset at 8:24 pm CDT.

Sunshine

With an average of 10.2h of sunshine, July has the most sunshine of the year.

UV index

The months with the highest UV index are June and July, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In July, the average maximum UV index of 6 translates into the following recommendations:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the hottest in Washington?

With its average high temperature of 82°F (27.8°C) and a low of 65.1°F (18.4°C), July is regarded as the warmest month in Washington.

What is the average July temperature in Washington?

July temperatures in Washington vary between a high-temperature of 82°F (27.8°C) and a low-temperature of 65.1°F (18.4°C). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is estimated at 89.6°F (32°C).

What are the most humid months in Washington?

January and July, with an average relative humidity of 83%, are most humid months in Washington, Iowa.

What is the average humidity in July in Washington?

In July, the average relative humidity in Washington is 83%.

How much does it rain in Washington in July?

In July, in Washington, Iowa, the rain falls for 13.8 days. Throughout July, 2.01" (51mm) of precipitation is accumulated.

When it does not snow in Washington?

In Washington, snow does not fall in May through September.

How many hours of daylight does Washington have in July?

In July, the average day length in Washington is 14h and 49min.

When is the sunrise / sunset in July in Washington?

In July, on the first day of the month, sunrise is at 5:37 am and sunset at 8:43 pm. On the last day of the month, in Washington, sunrise is at 6:01 am and sunset at 8:24 pm CDT.

What month has the most sunshine in Washington?

With an average of 10.2h of sunshine, July has the most sunshine of the year in Washington.

How many hours of sunshine does Washington have in July?

In Washington, Iowa, the average sunshine duration in July is 10.2h.

What are the months with the highest UV index in Washington?

June and July, with an average maximum UV index of 6, are months with the highest UV index.

How high is the UV index in July in Washington?

In July, the average daily maximum UV index in Washington is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.
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
Washington, IA

Average temperature in July - Washington, IA
  • Average high temperature in July: 82°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in July: 65.1°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

Average pressure in July
Washington, IA

Average pressure in July - Washington, IA
  • Average pressure in July: 29.96"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in July
Washington, IA

Average wind speed in July - Washington, IA
  • Average wind speed in July: 6.9mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).

Average humidity in July
Washington, IA

Average humidity in July - Washington, IA
  • Average humidity in July: 83%

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (72%).

Average rainfall in July
Washington, IA

Average rainfall in July - Washington, IA
  • Average rainfall in July: 2.01"

The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is December (0.71").

Average rainfall days in July
Washington, IA

Average rainfall days in July - Washington, IA
  • Average rainfall days in July: 13.8 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (4.2 days).

Average snowfall in July
Washington, IA

Average snowfall in July - Washington, IA
  • Average snowfall in July: 0"

The month with the highest snowfall is January (2.52").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in July
Washington, IA

Average snowfall days in July - Washington, IA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
Washington, IA

Average daylight in July / Average sunshine in July - Washington, IA
  • Average daylight in July: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in July: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in July
Washington, IA

Average sunshine days in July - Washington, IA
  • Average sunshine days in July: 12.9 days

The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in July
Washington, IA

Average UV index in July - Washington, IA
  • Average UV index in July: 6

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in July
Washington, IA

Average cloud cover in July - Washington, IA
  • Average cloud cover in July: 30

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).

Average visibility in July
Washington, IA

Average visibility in July - Washington, IA
  • Average visibility in July: 5mi

The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).

Washington, Iowa, USA

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