July weather forecastIndex, WA
July
Weather in July
July in Index, Washington, is an agreeable summer month, with an average temperature ranging between max 72.9°F (22.7°C) and min 46.6°F (8.1°C).Temperature
With the onset of July, Index's weather sees a minor temperature rise, transitioning from a comfortable 64.9°F (18.3°C) in June to an agreeable 72.9°F (22.7°C). Index undergoes a major shift from daytime highs, averaging a chilly 46.6°F (8.1°C) during the night in July.Humidity
The least humid month in Index, Washington, is July, with an average relative humidity of 72%.Rainfall
In Index, in July, it is raining for 9.6 days, with typically 0.83" (21mm) of accumulated precipitation. Throughout the year, in Index, there are 200.6 rainfall days, and 51.65" (1312mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Index, Washington.Daylight
The average length of the day in July in Index, Washington, is 15h and 33min.On the first day of the month, sunrise is at 5:12 am and sunset at 9:08 pm. On the last day of July, in Index, sunrise is at 5:42 am and sunset at 8:42 pm PDT.
Sunshine
In Index, the average sunshine in July is 10.3h.UV index
The month with the highest UV index is July, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 in July interprets into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Index, WA
- Average high temperature in July: 72.9°F
The warmest month (with the highest average high temperature) is August (73.4°F).
The month with the lowest average high temperature is December (38.3°F).
- Average low temperature in July: 46.6°F
The month with the highest average low temperature is August (48°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).
Average pressure in July
Index, WA
- Average pressure in July: 30.02"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed in July
Index, WA
- Average wind speed in July: 3.4mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).
Average humidity in July
Index, WA
- Average humidity in July: 72%
The months with the highest relative humidity are January, February and March (88%).
The month with the lowest relative humidity is July (72%).
Average rainfall in July
Index, WA
- Average rainfall in July: 0.83"
The wettest month (with the highest rainfall) is January (7.8").
The driest month (with the least rainfall) is August (0.79").
Average rainfall days in July
Index, WA
- Average rainfall days in July: 9.6 days
The month with the highest number of rainy days is March (22.3 days).
The month with the least rainy days is August (7.9 days).
Average snowfall in July
Index, WA
- Average snowfall in July: 0"
The month with the highest snowfall is February (5.43").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in July
Index, WA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in July /
Average sunshine in July
Index, WA
- Average daylight in July: 15h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in July: 10h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in July
Index, WA
- Average sunshine days in July: 18.3 days
The month with the most sunshine days is August (19.9 days).
The month with the least sunshine days is March (7 days).
Average UV index in July
Index, WA
- Average UV index in July: 5
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in July
Index, WA
- Average cloud cover in July: 31
The months with the most cloud cover are March and December (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in July
Index, WA
- Average visibility in July: 5mi
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
