Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The warmest temperatures in Lewiston occur during August, when averages reach a peak of 85.3°F (29.6°C) and a low of 59.2°F (15.1°C).Humidity
The least humid month in Lewiston is August, with an average relative humidity of 38%.Rainfall
The month with the least rainfall is August, when the rain falls for 5.2 days and typically collects 0.31" (8mm) of precipitation.Snowfall
In Lewiston, snow does not fall in May through September.Daylight
In August, the average length of the day is 14h and 7min.On the first day of the month, sunrise is at 5:30 am and sunset at 8:18 pm. On the last day of August, sunrise is at 6:08 am and sunset at 7:28 pm PDT.
Sunshine
August has the most sunshine of the year, with an average of 12h of sunshine.UV index
In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 5 in August leads to these recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
What time of the year is the hottest in Lewiston?
How hot is August in Lewiston?
What is the least humid month in Lewiston?
What is the average humidity in August in Lewiston?
What is the driest month in Lewiston?
How much does it rain in Lewiston in August?
When it does not snow in Lewiston?
What is the average length of the day in August in Lewiston?
What time are sunrise and sunset in August in Lewiston?
What month has the most sunshine in Lewiston?
How long on average sun shines in August in Lewiston?
What is the UV index intensity in August in Lewiston?
Average temperature in August
Lewiston, ID
- Average high temperature in August: 85.3°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 August: 59.2°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 August
Lewiston, ID
- Average pressure in August: 29.91"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 August
Lewiston, ID
- Average wind speed in August: 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 August
Lewiston, ID
- Average humidity in August: 38%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (38%).
Average rainfall in August
Lewiston, ID
- Average rainfall in August: 0.31"
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 August
Lewiston, ID
- Average rainfall days in August: 5.2 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 August
Lewiston, ID
- Average snowfall in August: 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 August
Lewiston, ID
- Average snowfall days in August: 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 August /
Average sunshine in August
Lewiston, ID
- Average daylight in August: 14h and 1min
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 August: 12h and 0min
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 August
Lewiston, ID
- Average sunshine days in August: 23.5 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 August
Lewiston, ID
- Average UV index in August: 5
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 August
Lewiston, ID
- Average cloud cover in August: 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 August
Lewiston, ID
- Average visibility in August: 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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