Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
Lewiston in July shows a temperature shift, moving from an average high of an agreeable 71.8°F (22.1°C) in June to a moderately hot 84°F (28.9°C). July nights showcase a dramatic shift from daytime highs to an average temperature of 55.9°F (13.3°C).Heat index
The heat index in July is estimated at 84.2°F (29°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.Understanding the heat index involves considering values for shaded locales with light wind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
The average relative humidity in July is 45%.Rainfall
In July, the rain falls for 5.4 days. Throughout July, 0.39" (10mm) of precipitation is accumulated. In Lewiston, during the entire year, the rain falls for 142.4 days and collects up to 14.21" (361mm) of precipitation.Snowfall
In Lewiston, Idaho, snow does not fall in May through September.Daylight
In Lewiston, the average length of the day in July is 15h and 22min.On the first day of the month, sunrise is at 5:00 am and sunset at 8:44 pm. On the last day of July, sunrise is at 5:29 am and sunset at 8:19 pm PDT.
Sunshine
In Lewiston, the average sunshine in July is 11.9h.UV index
The month with the highest UV index is July, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.Note: In July, an average UV index of 7 transforms into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Frequently asked questions
How hot is it in Lewiston in July?
What is the average humidity in July in Lewiston?
How many days does it rain in July in Lewiston?
When it does not snow in Lewiston?
How many hours of daylight does Lewiston have in July?
When are sunrise and sunset in July in Lewiston?
How many hours of sunshine does Lewiston have in July?
What is the month with the highest UV index in Lewiston?
What is the UV index reading in July in Lewiston?
Average temperature in July
Lewiston, ID
- Average high temperature in July: 84°F
The warmest month (with the highest average high temperature) is August (85.3°F).
The month with the lowest average high temperature is December (36.1°F).
- Average low temperature in July: 55.9°F
The month with the highest average low temperature is August (59.2°F).
The coldest month (with the lowest average low temperature) is December (24.4°F).
Average pressure in July
Lewiston, ID
- Average pressure in July: 29.93"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in July
Lewiston, ID
- Average wind speed in July: 4.3mph
The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest months (with the lowest average wind speed) are July, August and September (4.3mph).
Average humidity in July
Lewiston, ID
- Average humidity in July: 45%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (38%).
Average rainfall in July
Lewiston, ID
- Average rainfall in July: 0.39"
The wettest month (with the highest rainfall) is March (1.85").
The driest month (with the least rainfall) is August (0.31").
Average rainfall days in July
Lewiston, ID
- Average rainfall days in July: 5.4 days
The month with the highest number of rainy days is March (17.6 days).
The month with the least rainy days is August (5.2 days).
Average snowfall in July
Lewiston, ID
- Average snowfall in July: 0"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Lewiston, ID
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is December (8.1 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
Lewiston, ID
- 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: 11h and 5min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in July
Lewiston, ID
- Average sunshine days in July: 24 days
The month with the most sunshine days is July (24 days).
The months with the least sunshine days are February and March (10.8 days).
Average UV index in July
Lewiston, ID
- Average UV index in July: 7
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in July
Lewiston, ID
- Average cloud cover in July: 12
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in July
Lewiston, ID
- Average visibility in July: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Lewiston, Idaho, USA
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