July weather forecastCalistoga, CA
July
Weather in July
July in Calistoga, California, is a hot summer month, with an average temperature fluctuating between 87.6°F (30.9°C) and 55.4°F (13°C).Temperature
July ushers in an average high-temperature of a hot 87.6°F (30.9°C), aligning closely with the preceding month. July nights in Calistoga showcase a dramatic shift from daytime highs to an average temperature of 55.4°F (13°C).Heat index
Throughout July, the heat index is evaluated at a tropical 91.4°F (33°C). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.Heat index evaluations are typically in the context of light winds and shaded environments. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
In Calistoga, the average relative humidity in July is 54%.Rainfall
The months with the least rainfall are July and August Rain falls for 1 days and accumulates 0.04" (1mm) of rain.Snowfall
January, March through December are months without snowfall.Daylight
In Calistoga, the average length of the day in July is 14h and 33min.On the first day of the month, sunrise is at 5:50 am and sunset at 8:38 pm. On the last day of July, sunrise is at 6:11 am and sunset at 8:21 pm PDT.
Sunshine
With an average of 12h of sunshine, July has the most sunshine of the year.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 6 in July translates into this advice:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Calistoga, CA
- Average high temperature in July: 87.6°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 July: 55.4°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 July
Calistoga, CA
- Average pressure in July: 29.92"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 July
Calistoga, CA
- Average wind speed in July: 4.8mph
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 July
Calistoga, CA
- Average humidity in July: 54%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (53%).
Average rainfall in July
Calistoga, CA
- Average rainfall in July: 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 July
Calistoga, CA
- Average rainfall days in July: 1 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 July
Calistoga, CA
- Average snowfall in July: 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 July
Calistoga, CA
- Average snowfall days in July: 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 July /
Average sunshine in July
Calistoga, CA
- Average daylight in July: 14h and 30min
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 July: 12h and 0min
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 July
Calistoga, CA
- Average sunshine days in July: 29.8 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 July
Calistoga, CA
- Average UV index in July: 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 July
Calistoga, CA
- Average cloud cover in July: 5
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 July
Calistoga, CA
- Average visibility in July: 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).
