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July Weather in Marietta-Alderwood, United States

Last updated: June 24, 2025

In July, the average temperature in Marietta-Alderwood, United States hovers around 17°C (63°F). You'll experience a comfortable range, with minimum temperatures dipping to 11°C (53°F) and reaching up to a maximum of 27°C (80°F). Expect some rainfall as well, with an average precipitation of 27 mm (1.1 in) spread over 4 days. With an average humidity of 84%, it's a good idea to stay hydrated and enjoy the lush surroundings!

July Temperature in Marietta-Alderwood

In July in Marietta-Alderwood, the average temperature is 17°C (63°F). Maximums can reach 27°C (80°F) and minimums can be as low as 11°C (53°F). This moderate climate makes it a great time to explore the outdoors and enjoy local attractions.

July Weather in Marietta-Alderwood: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Marietta-Alderwood, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marietta-Alderwood, July typically has an average temperature of 17°C (63°F), with highs reaching up to 27°C (80°F) and lows dropping to around 11°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec413943485358636460514641
Data source: Temperature data for Marietta-Alderwood generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Marietta-Alderwood

In Marietta-Alderwood in July, the total precipitation amount is 27 mm (1.1 in) over a span of 4 days.

July Precipitation Trends in Marietta-Alderwood

The chart displays monthly precipitation patterns in Marietta-Alderwood, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Marietta-Alderwood, July typically receives around 27 mm (1.1 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec19918515612776582720125186261227
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Marietta-Alderwood

In Marietta-Alderwood in July, humidity is 84%. With an average temperature of 17°C (63°F), this humidity feels like a warm, sticky embrace that can make traveling feel heavy and cumbersome, often leaving visitors yearning for refreshing breezes and shade.

July Average Humidity in Marietta-Alderwood

This chart illustrates the average monthly humidity levels in Marietta-Alderwood, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Marietta-Alderwood is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%86%86%81%83%84%77%76%88%87%87%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Marietta-Alderwood

In Marietta-Alderwood in July, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Marietta-Alderwood.

Maximum UV Index Levels in Marietta-Alderwood for July

The chart shows the monthly maximum UV Index (UVI) for Marietta-Alderwood in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In July, the maximum UV index in Marietta-Alderwood typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Marietta-Alderwood July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How July Weather in Marietta-Alderwood Compares to Other Months

Weather in Marietta-Alderwood varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Marietta-Alderwood, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Marietta-Alderwood, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)199 mm (7.8 inches)86%low
February Weather4°C (39°F)185 mm (7.3 inches)85%moderate
March Weather6°C (44°F)156 mm (6.2 inches)86%moderate
April Weather9°C (48°F)127 mm (5.0 inches)86%high
May Weather12°C (53°F)76 mm (3.0 inches)81%very high
June Weather15°C (59°F)58 mm (2.3 inches)83%very high
July Weather17°C (63°F)27 mm (1.1 inches)84%very high
August Weather18°C (64°F)19 mm (0.8 inches)77%very high
September Weather15°C (60°F)125 mm (4.9 inches)76%high
October Weather11°C (51°F)186 mm (7.3 inches)88%moderate
November Weather8°C (46°F)261 mm (10.3 inches)87%low
December Weather5°C (41°F)227 mm (8.9 inches)87%low

Compare Marietta-Alderwood's Climate with Cities Worldwide