August weather forecastMount Shasta, CA
August
Weather in August
August, the last month of the summer in Mount Shasta, is also a moderately hot month, with an average temperature varying between 83.5°F (28.6°C) and 51.8°F (11°C).Temperature
At the start of August, Mount Shasta's average high-temperature reaches a still warm 83.5°F (28.6°C), subtly different from the preceding month. A marked drop from daytime peak temperatures to an average low-temperature of 51.8°F (11°C) is observed during the nights in August.Heat index
The heat index value for August is calculated to be 84.2°F (29°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.For clarity, heat index numbers account for light winds and areas under shade. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
August is the least humid month, with an average relative humidity of 45%.Rainfall
In Mount Shasta, California, during August, the rain falls for 2.3 days and regularly aggregates up to 0.24" (6mm) of precipitation. In Mount Shasta, during the entire year, the rain falls for 90.7 days and collects up to 26.38" (670mm) of precipitation.Snowfall
In Mount Shasta, snow does not fall in June through August.Daylight
The average length of the day in August is 13h and 47min.On the first day of the month, sunrise is at 6:05 am and sunset at 8:25 pm. On the last day of August, sunrise is at 6:35 am and sunset at 7:43 pm PDT.
Sunshine
The average sunshine in August is 12h.UV index
In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In August, the maximum UV index of 5 translates into these guidelines:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Mount Shasta, CA
- Average high temperature in August: 83.5°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (40.8°F).
- Average low temperature in August: 51.8°F
The month with the highest average low temperature is July (52.2°F).
The coldest month (with the lowest average low temperature) is December (27.1°F).
Average pressure in August
Mount Shasta, CA
- Average pressure in August: 29.94"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.94"Hg).
Average wind speed in August
Mount Shasta, CA
- Average wind speed in August: 3.9mph
The windiest month (with the highest average wind speed) is March (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).
Average humidity in August
Mount Shasta, CA
- Average humidity in August: 45%
The month with the highest relative humidity is March (81%).
The month with the lowest relative humidity is August (45%).
Average rainfall in August
Mount Shasta, CA
- Average rainfall in August: 0.24"
The wettest month (with the highest rainfall) is March (4.69").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in August
Mount Shasta, CA
- Average rainfall days in August: 2.3 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (2.3 days).
Average snowfall in August
Mount Shasta, CA
- Average snowfall in August: 0"
The month with the highest snowfall is January (19.21").
The months with the least snowfall are June, July and August (0").
Average snowfall days in August
Mount Shasta, CA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is December (10.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in August /
Average sunshine in August
Mount Shasta, CA
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 12h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in August
Mount Shasta, CA
- Average sunshine days in August: 25.7 days
The months with the most sunshine days are July and August (25.7 days).
The month with the least sunshine days is March (12.3 days).
Average UV index in August
Mount Shasta, CA
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in August
Mount Shasta, CA
- Average cloud cover in August: 6
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in August
Mount Shasta, CA
- 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, March and December (5mi).
