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 advent of August observes an average high-temperature of a still warm 81.1°F (27.3°C), nearly identical to July's 82.8°F (28.2°C). Despite soaring daytime temperatures, Lewiston registers a consistent average low-temperature of 54.5°F (12.5°C) in August.Humidity
The least humid month is August, with an average relative humidity of 38%.Rainfall
In August, the rain falls for 7.6 days. Throughout August, 0.71" (18mm) of precipitation is accumulated. Throughout the year, in Lewiston, there are 117.9 rainfall days, and 17.68" (449mm) of precipitation is accumulated.Snowfall
June through August are months without snowfall in Lewiston, Utah.Daylight
The average length of the day in August is 13h and 49min.On the first day of August, sunrise is at 6:21 am and sunset at 8:45 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 8:02 pm MDT.
Sunshine
July and August, with an average of 11.9h of sunshine, are months with the most sunshine.UV index
In Lewiston, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index, 5 during August, leads to the following recommendations:
Take precautions - Protection against sun damage is advised. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Lewiston in August?
What is the least humid month in Lewiston?
What is the average humidity in August in Lewiston?
How many days does it rain in August in Lewiston?
When it does not snow in Lewiston?
Does it snow in Lewiston in August?
How many hours of daylight does Lewiston have in August?
When are sunrise and sunset in August in Lewiston?
What is the month with the most sunshine in Lewiston?
How long on average sun shines in August in Lewiston?
What is the UV index reading in August in Lewiston?
Average temperature in August
Lewiston, UT
- Average high temperature in August: 81.1°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is December (28.6°F).
- Average low temperature in August: 54.5°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in August
Lewiston, UT
- Average pressure in August: 29.93"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in August
Lewiston, UT
- Average wind speed in August: 5.7mph
The windiest months (with the highest average wind speed) are April, June and August (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in August
Lewiston, UT
- Average humidity in August: 38%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (38%).
Average rainfall in August
Lewiston, UT
- Average rainfall in August: 0.71"
The wettest month (with the highest rainfall) is January (2.24").
The driest month (with the least rainfall) is July (0.63").
Average rainfall days in August
Lewiston, UT
- Average rainfall days in August: 7.6 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is November (6.7 days).
Average snowfall in August
Lewiston, UT
- Average snowfall in August: 0"
The month with the highest snowfall is January (16.73").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Lewiston, UT
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in August /
Average sunshine in August
Lewiston, UT
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in August: 11h and 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in August
Lewiston, UT
- Average sunshine days in August: 18.2 days
The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in August
Lewiston, UT
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Lewiston, UT
- Average cloud cover in August: 10
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in August
Lewiston, UT
- Average visibility in August: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Lewiston, Utah, USA
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