July weather forecast
Des Moines, WA

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Weather in July

July is a warm summer month in Des Moines, Washington, with an average temperature varying between 77.2°F (25.1°C) and 52.5°F (11.4°C).

Temperature

July's arrival signals a subtle increase in average high-temperatures, moving from June's agreeable 70°F (21.1°C) to a moderately hot 77.2°F (25.1°C). Des Moines endures a clear shift from daytime heat to a mean low-temperature of 52.5°F (11.4°C) during July nights.

Humidity

The least humid month in Des Moines is July, with an average relative humidity of 68%.

Rainfall

July is the month with the least rainfall in Des Moines. Rain falls for 6.3 days and accumulates 0.31" (8mm) of precipitation.

Snowfall

April through October are months without snowfall.

Ocean temperature

In Des Moines, in July, the average water temperature is 51.3°F (10.7°C).
Note: Diving into 51.3°F (10.7°C) when it's under 50°F (10°C) can cause immediate cold shock symptoms, marked by hyperventilation.

Daylight

The average length of the day in July in Des Moines is 15h and 30min.
On the first day of July, sunrise is at 5:17 am and sunset at 9:09 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:43 pm PDT.

Sunshine

In July, the average sunshine in Des Moines is 10.5h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index, 5 during July, leads to the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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Frequently asked questions

What is the average July temperature in Des Moines?

In Des Moines, 77.2°F (25.1°C) is the average high-temperature and 52.5°F (11.4°C) is the average low-temperature during July.

What is the least humid month in Des Moines?

July is the least humid month in Des Moines, with an average relative humidity of 68%.

What is the average humidity in July in Des Moines?

In July, the average relative humidity in Des Moines is 68%.

What is the driest month in Des Moines?

July is the month with the least rainfall in Des Moines, Washington. Rain falls for 6.3 days and accumulates 0.31" (8mm) of precipitation.

How many days does it rain in July in Des Moines?

In Des Moines, in July, during 6.3 rainfall days, 0.31" (8mm) of precipitation is typically accumulated.

When it does not snow in Des Moines?

In Des Moines, Washington, snow does not fall in April through October.

How cold is the water in July in Des Moines?

In July, the average ocean temperature in Des Moines is 51.3°F (10.7°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

How many hours of daylight does Des Moines have in July?

In Des Moines, the average day length in July is 15h and 30min.

When are sunrise and sunset in July in Des Moines?

In July, on the first day of the month, sunrise is at 5:17 am and sunset at 9:09 pm. On the last day of the month, in Des Moines, sunrise is at 5:47 am and sunset at 8:43 pm PDT.

How many hours of sunshine does Des Moines have in July?

In July, the average sunshine duration in Des Moines, Washington, is 10.5h.

What are the months with the highest UV index in Des Moines?

The months with the highest UV index are June through August, with an average maximum UV index of 5.

What is the UV index reading in July in Des Moines?

In July, the average daily maximum UV index in Des Moines is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJulyASOND
Jun
July
Aug
Average high temperature
70°F 21.1°C
77.2°F 25.1°C
77.7°F 25.4°C
Average low temperature
48°F 8.9°C
52.5°F 11.4°C
53.6°F 12°C
Average pressure
30.02" 763mmHg
30.03" 763mmHg
30.01" 762mmHg
Average wind speed
4mph 6.4km/h
3.6mph 5.8km/h
3.6mph 5.8km/h
Average max. wind speed
4.5mph 7.2km/h
4.1mph 6.6km/h
4mph 6.4km/h
Average wind speed gusts
5.9mph 9.5km/h
5.2mph 8.4km/h
5.3mph 8.5km/h
Average humidity
73%
68%
69%
Average rainfall
0.79" 20mm
0.31" 8mm
0.47" 12mm
Average rainfall days
10.5
6.3
5.7
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0
0
0
Average sea temperature
47.9°F 8.8°C
51.2°F 10.7°C
53.7°F 12.1°C
Average daylight
15h 5min
15h 3min
14h 1min
Average sunshine
9h 2min
10h 3min
10h 4min
Average sunshine days
17.1
22.6
22.8
Average UV index
5
5
5
Average cloud cover
44%
28%
26%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in July
Des Moines, WA

Average temperature in July - Des Moines, WA
  • Average high temperature in July: 77.2°F

The warmest month (with the highest average high temperature) is August (77.7°F).
The month with the lowest average high temperature is December (43.5°F).

  • Average low temperature in July: 52.5°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 (34.3°F).

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Average pressure in July
Des Moines, WA

Average pressure in July - Des Moines, WA
  • Average pressure in July: 30.03"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

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Average wind speed in July
Des Moines, WA

Average wind speed in July - Des Moines, WA
  • Average wind speed in July: 3.6mph

The windiest month (with the highest average wind speed) is March (5.3mph).
The calmest months (with the lowest average wind speed) are July and August (3.6mph).

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Average humidity in July
Des Moines, WA

Average humidity in July - Des Moines, WA
  • Average humidity in July: 68%

The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is July (68%).

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Average rainfall in July
Des Moines, WA

Average rainfall in July - Des Moines, WA
  • Average rainfall in July: 0.31"

The wettest month (with the highest rainfall) is December (2.2").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in July
Des Moines, WA

Average rainfall days in July - Des Moines, WA
  • Average rainfall days in July: 6.3 days

The month with the highest number of rainy days is April (14.9 days).
The month with the least rainy days is August (5.7 days).

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Average snowfall in July
Des Moines, WA

Average snowfall in July - Des Moines, WA
  • Average snowfall in July: 0"

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

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Average snowfall days in July
Des Moines, WA

Average snowfall days in July - Des Moines, WA
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in July
Des Moines, WA

Average sea temperature in July - Des Moines, WA
  • Average sea temperature in July: 51.2°F

The best month for swimming (with the highest average sea temperature) is August (53.7°F).
The coldest month (with the lowest average sea temperature) is February (45.8°F).

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Average daylight in July /
Average sunshine in July
Des Moines, WA

Average daylight in July / Average sunshine in July - Des Moines, WA
  • Average daylight in July: 15h and 3min

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 3min

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).

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Average sunshine days in July
Des Moines, WA

Average sunshine days in July - Des Moines, WA
  • Average sunshine days in July: 22.6 days

The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (13 days).

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Average UV index in July
Des Moines, WA

Average UV index in July - Des Moines, WA
  • Average UV index in July: 5

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in July
Des Moines, WA

Average cloud cover in July - Des Moines, WA
  • Average cloud cover in July: 28

The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in July
Des Moines, WA

Average visibility in July - Des Moines, 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).

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Des Moines, Washington, USA

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