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
Calistoga experiences its highest temperatures in August, with an average peak of 87.8°F (31°C) and a low of 55°F (12.8°C).Heat index
The heat index for August is appraised at a hot 93.2°F (34°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.Records show heat index calculations are tailored for shaded regions and mild winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
In Calistoga, the average relative humidity in August is 56%.Rainfall
July and August are months with the least rain when the rain falls for 0.8 days and typically aggregates up to 0.04" (1mm) of rain.Snowfall
January, March through December are months without snowfall.Daylight
The average length of the day in August is 13h and 37min.On the first day of the month, sunrise is at 6:12 am and sunset at 8:20 pm. On the last day of August, in Calistoga, sunrise is at 6:39 am and sunset at 7:41 pm PDT.
Sunshine
In August, the average sunshine in Calistoga is 11.9h.UV index
The months with the highest UV index in Calistoga are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index, 6 during August, leads to the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Boost your sun resistance with garments that are densely woven yet spacious.
Frequently asked questions
What part of the year is the hottest in Calistoga?
How hot is it in Calistoga in August?
What is the average humidity in August in Calistoga?
What is the driest month in Calistoga?
How much does it rain in Calistoga in August?
When it does not snow in Calistoga?
How many hours of daylight does Calistoga have in August?
What time are sunrise and sunset in August in Calistoga?
How many hours of sunshine does Calistoga have in August?
When is the highest UV index in Calistoga?
How high is the UV index in August in Calistoga?
Average temperature in August
Calistoga, CA
- Average high temperature in August: 87.8°F
The warmest month (with the highest average high temperature) is August (87.8°F).
The month with the lowest average high temperature is December (54.7°F).
- Average low temperature in August: 55°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is December (39.4°F).
Average pressure in August
Calistoga, CA
- Average pressure in August: 29.91"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).
Average wind speed in August
Calistoga, CA
- Average wind speed in August: 4.5mph
The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).
Average humidity in August
Calistoga, CA
- Average humidity in August: 56%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (53%).
Average rainfall in August
Calistoga, CA
- Average rainfall in August: 0.04"
The wettest month (with the highest rainfall) is February (3.78").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in August
Calistoga, CA
- Average rainfall days in August: 0.8 days
The month with the highest number of rainy days is March (13.6 days).
The month with the least rainy days is August (0.8 days).
Average snowfall in August
Calistoga, CA
- Average snowfall in August: 0"
The month with the highest snowfall is February (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in August
Calistoga, CA
- Average snowfall days in August: 0 days
The months with the highest number of snowfall days are February and March (0.1 days).
The months with the least snowfall days are January, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in August /
Average sunshine in August
Calistoga, CA
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in August: 11h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in August
Calistoga, CA
- Average sunshine days in August: 29.5 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (15.8 days).
Average UV index in August
Calistoga, CA
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in August
Calistoga, CA
- Average cloud cover in August: 6
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in August
Calistoga, CA
- Average visibility in August: 6mi
The months with the highest visibility are January, February, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is March (5mi).
Calistoga, California, USA
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