June weather forecast
Johnstown, CA

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Weather in June

The first month of the summer, June, is a moderately hot month in Johnstown, California, with temperature in the range of an average high of 78.4°F (25.8°C) and an average low of 56.8°F (13.8°C).

Temperature

June brings a slight rise in Johnstown's average high-temperature, moving from an agreeable 72.5°F (22.5°C) in May to a warm 78.4°F (25.8°C). Johnstown registers a significant drop in temperature in June, with average nighttime lows of 56.8°F (13.8°C).

Humidity

In June, the average relative humidity is 62%.

Rainfall

The month with the least rainfall is June, when the rain falls for 1.4 days and typically collects 0.04" (1mm) of precipitation.

Daylight

The month with the longest days is June, with an average of 14h and 18min of daylight.
On the first day of June, sunrise is at 5:39 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 7:59 pm PDT.

Sunshine

June and July, with an average of 12.1h of sunshine, are months with the most sunshine.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 6 during June translates into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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Frequently asked questions

What are the temperatures in Johnstown in June?

In June, the average high-temperature and low-temperature are 78.4°F (25.8°C) and 56.8°F (13.8°C) respectively.

What is the average humidity in June in Johnstown?

In June, the average relative humidity in Johnstown, California, is 62%.

What is the driest month in Johnstown?

The month with the least rainfall is June, when the rain falls for 1.4 days and typically collects 0.04" (1mm) of precipitation.

How many days does it rain in June in Johnstown?

In Johnstown, in June, it is raining for 1.4 days, with typically 0.04" (1mm) of accumulated precipitation.

When are the longest days in Johnstown?

With an average of 14h and 18min of daylight, June has the longest days of the year in Johnstown.

How many hours of daylight does Johnstown have in June?

The average day length in June in Johnstown is 14h and 17min.

What time are sunrise and sunset in June in Johnstown?

On the first day of June in Johnstown, sunrise is at 5:39 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 7:59 pm PDT.

What are the months with the most sunshine in Johnstown?

The months with the most sunshine are June and July, with an average of 12.1h of sunshine.

How long on average sun shines in June in Johnstown?

In Johnstown, the average sunshine duration in June is 12.1h.

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

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

How high is the UV index in June in Johnstown?

In Johnstown, California, the average daily maximum UV index in June is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Johnstown, CA

Average temperature in June - Johnstown, CA
  • Average high temperature in June: 78.4°F

The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is December (63.7°F).

  • Average low temperature in June: 56.8°F

The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (46°F).

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Average pressure in June
Johnstown, CA

Average pressure in June - Johnstown, CA
  • Average pressure in June: 29.86"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in June
Johnstown, CA

Average wind speed in June - Johnstown, CA
  • Average wind speed in June: 4.7mph

The windiest months (with the highest average wind speed) are April and May (5.3mph).
The calmest months (with the lowest average wind speed) are August, September and October (4.2mph).

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Average humidity in June
Johnstown, CA

Average humidity in June - Johnstown, CA
  • Average humidity in June: 62%

The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).

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Average rainfall in June
Johnstown, CA

Average rainfall in June - Johnstown, CA
  • Average rainfall in June: 0.04"

The wettest month (with the highest rainfall) is February (1.06").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in June
Johnstown, CA

Average rainfall days in June - Johnstown, CA
  • Average rainfall days in June: 1.4 days

The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is June (1.4 days).

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Average daylight in June /
Average sunshine in June
Johnstown, CA

Average daylight in June / Average sunshine in June - Johnstown, CA
  • Average daylight in June: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in June: 12h and 1min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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Average sunshine days in June
Johnstown, CA

Average sunshine days in June - Johnstown, CA
  • Average sunshine days in June: 28 days

The month with the most sunshine days is June (28 days).
The month with the least sunshine days is July (20.7 days).

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Average UV index in June
Johnstown, CA

Average UV index in June - Johnstown, CA
  • Average UV index in June: 6

The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in June
Johnstown, CA

Average cloud cover in June - Johnstown, CA
  • Average cloud cover in June: 8

The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in June
Johnstown, CA

Average visibility in June - Johnstown, CA
  • Average visibility in June: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Johnstown, California, USA

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