June weather forecast
Walnut, CA

Share

Weather in June

The first month of the summer, June, is still a warm month in Walnut, California, with an average temperature ranging between min 58.8°F (14.9°C) and max 81.7°F (27.6°C).

Temperature

The shift from May to June sees a slight increase in the average high-temperature, transitioning from a moderately hot 75.7°F (24.3°C) to a still warm 81.7°F (27.6°C). During June, the nighttime temperature presents a clear descent from the daily peaks, falling to an average of 58.8°F (14.9°C).

Heat index

The heat index in June is calculated to be 84.2°F (29°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.

Humidity

The months with the highest humidity are May and June, with an average relative humidity of 56%.

Rainfall

The months with the least rainfall are June and August Rain falls for 1 days and accumulates 0.04" (1mm) of rain.

Daylight

The month with the longest days is June, with an average of 14h and 24min of daylight.
On the first day of June, sunrise is at 5:40 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:06 pm PDT.

Sunshine

In Walnut, the average sunshine in June is 12h.

UV index

In June, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: A daily high UV index of 6 in June leads to these guidelines:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Walnut in June?

In June, in Walnut, the average high-temperature is 81.7°F (27.6°C), and the average low-temperature is 58.8°F (14.9°C). In June, the average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, is calculated to be 84.2°F (29°C).

What is the most humid month in Walnut?

May and June, with an average relative humidity of 56%, are most humid months in Walnut.

What is the average humidity in June?

The average relative humidity in June is 56%.

What is the driest month?

June and August are months with the least rain when the rain falls for 1 days and typically aggregates up to 0.04" (1mm) of rain.

How much does it rain in June?

In Walnut, in June, during 1 rainfall days, 0.04" (1mm) of precipitation is typically accumulated.

When are the longest days?

The month with the longest days is June, with an average of 14h and 24min of daylight.

What is the average length of the day in June?

The average day length in June is 14h and 23min.

What time are sunrise and sunset in June?

In June, on the first day of the month, sunrise is at 5:40 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 8:06 pm PDT.

How long on average sun shines in June?

In Walnut, the average sunshine duration in June is 12h.

What is the UV index intensity in June?

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

Average temperature in June
Walnut, CA

Average temperature in June - Walnut, CA
  • Average high temperature in June: 81.7°F

The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is December (63.7°F).

  • Average low temperature in June: 58.8°F

The month with the highest average low temperature is August (66.2°F).
The coldest months (with the lowest average low temperature) are February and December (47.7°F).

Average pressure in June
Walnut, CA

Average pressure in June - Walnut, CA
  • Average pressure in June: 29.87"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in June
Walnut, CA

Average wind speed in June - Walnut, CA
  • Average wind speed in June: 5.2mph

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 September (4.5mph).

Average humidity in June
Walnut, CA

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

The months with the highest relative humidity are May and June (56%).
The month with the lowest relative humidity is November (45%).

Average rainfall in June
Walnut, CA

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

The wettest month (with the highest rainfall) is December (1.57").
The driest months (with the least rainfall) are June and August (0.04").

Average rainfall days in June
Walnut, CA

Average rainfall days in June - Walnut, CA
  • Average rainfall days in June: 1 days

The month with the highest number of rainy days is March (6.6 days).
The month with the least rainy days is June (1 days).

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

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

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in June: 12h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).

Average sunshine days in June
Walnut, CA

Average sunshine days in June - Walnut, CA
  • Average sunshine days in June: 28.6 days

The month with the most sunshine days is June (28.6 days).
The month with the least sunshine days is February (22 days).

Average UV index in June
Walnut, CA

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

The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).

Average cloud cover in June
Walnut, CA

Average cloud cover in June - Walnut, CA
  • Average cloud cover in June: 9

The months with the most cloud cover are February, March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in June
Walnut, CA

Average visibility in June - Walnut, 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).

Walnut, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location