June weather forecast
Calistoga, CA

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Vineyard and tree lines in a plantation in the Napa Valley in Calistoga, California
Vineyard and tree lines in a plantation in the Napa Valley in Calistoga, California

Weather in June

June, the first month of the summer in Calistoga, is also a moderately hot month, with temperature in the range of an average low of 53.1°F (11.7°C) and an average high of 83.1°F (28.4°C).

Temperature

As Calistoga enters June, the average high-temperature increases from the 73.4°F (23°C) of May to a still moderately hot 83.1°F (28.4°C). The nighttime average for Calistoga in June plummets considerably from its daytime counterpart, resting at a fresh 53.1°F (11.7°C).

Heat index

The heat index in June is evaluated at a tropical 86°F (30°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.
Note that heat index values are valued for light wind and location in the shade. 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 'real feel' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.

Humidity

In Calistoga, the average relative humidity in June is 56%.

Rainfall

In June, the rain falls for 2.3 days. Throughout June, 0.16" (4mm) of precipitation is accumulated. In Calistoga, during the entire year, the rain falls for 77 days and collects up to 17.05" (433mm) of precipitation.

Snowfall

January, March through December are months without snowfall.

Daylight

With an average of 14h and 48min of daylight, June has the longest days of the year.
On the first day of June, sunrise is at 5:47 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:38 pm PDT.

Sunshine

The average sunshine in June is 11.6h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 during June translates into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Calistoga in June?

June temperatures vary between a high-temperature of 83.1°F (28.4°C) and a low-temperature of 53.1°F (11.7°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in June is evaluated at 86°F (30°C).

What is the average humidity in June?

In Calistoga, the average relative humidity in June is 56%.

How much does it rain in June?

In Calistoga, during June, the rain falls for 2.3 days and regularly aggregates up to 0.16" (4mm) of precipitation.

When it does not snow?

In Calistoga, snow does not fall in January, March through December.

When are the longest days?

The month with the longest days is June, with an average of 14h and 48min of daylight.

How many hours of daylight does Calistoga have in June?

In Calistoga, the average day length in June is 14h and 49min.

When are sunrise and sunset in June?

On the first day of June, sunrise is at 5:47 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:38 pm PDT.

How long on average sun shines in June?

In Calistoga, the average sunshine duration in June is 11.6h.

What are the months with the highest UV index in Calistoga?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the UV index reading in June?

In June, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Calistoga, CA

Average temperature in June - Calistoga, CA
  • Average high temperature in June: 83.1°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 June: 53.1°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 June
Calistoga, CA

Average pressure in June - Calistoga, CA
  • Average pressure in June: 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 June
Calistoga, CA

Average wind speed in June - Calistoga, CA
  • Average wind speed in June: 5.4mph

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 June
Calistoga, CA

Average humidity in June - Calistoga, CA
  • Average humidity in June: 56%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is September (53%).

Average rainfall in June
Calistoga, CA

Average rainfall in June - Calistoga, CA
  • Average rainfall in June: 0.16"

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 June
Calistoga, CA

Average rainfall days in June - Calistoga, CA
  • Average rainfall days in June: 2.3 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 June
Calistoga, CA

Average snowfall in June - Calistoga, CA
  • Average snowfall in June: 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 June
Calistoga, CA

Average snowfall days in June - Calistoga, CA
  • Average snowfall days in June: 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 June /
Average sunshine in June
Calistoga, CA

Average daylight in June / Average sunshine in June - Calistoga, CA
  • Average daylight in June: 14h and 5min

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 June: 11h and 4min

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 June
Calistoga, CA

Average sunshine days in June - Calistoga, CA
  • Average sunshine days in June: 26.8 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 June
Calistoga, CA

Average UV index in June - Calistoga, CA
  • Average UV index in June: 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 June
Calistoga, CA

Average cloud cover in June - Calistoga, CA
  • Average cloud cover in June: 13

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 June
Calistoga, CA

Average visibility in June - Calistoga, CA
  • Average visibility in June: 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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