October weather forecast
Herald, CA

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Weather in October

October, the same as September, is a moderately hot autumn month in Herald, California, with an average temperature fluctuating between 53.6°F (12°C) and 76.8°F (24.9°C).

Temperature

With the beginning of October, the average high-temperature shows a decrease, transitioning from a tropical 88.5°F (31.4°C) in September to a warm 76.8°F (24.9°C). A significant drop from the day's peak to an average low-temperature of 53.6°F (12°C) is noted during the nights in October in Herald, California.

Humidity

In Herald, the average relative humidity in October is 51%.

Rainfall

In Herald, during October, the rain falls for 3.2 days and regularly aggregates up to 0.59" (15mm) of precipitation. Throughout the year, there are 63.8 rainfall days, and 12.6" (320mm) of precipitation is accumulated.

Snowfall

In Herald, snow does not fall in January through November.

Daylight

In Herald, the average length of the day in October is 11h and 11min.
On the first day of October, sunrise is at 7:01 am and sunset at 6:47 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 6:06 pm PDT.

Sunshine

In Herald, the average sunshine in October is 7.2h.

UV index

In October, the average daily maximum UV index in Herald is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 4 during October leads to these instructions:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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Frequently asked questions

What are the temperatures in Herald in October?

The average high-temperature and low-temperature in Herald during October are 76.8°F (24.9°C) and 53.6°F (12°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is estimated at 89.6°F (32°C).

What is the average humidity in October in Herald?

In October, the average relative humidity in Herald, California, is 51%.

How many days does it rain in October in Herald?

In Herald, California, in October, it is raining for 3.2 days, with typically 0.59" (15mm) of accumulated precipitation.

When it does not snow in Herald?

January through November are months without snowfall.

What is the average length of the day in October in Herald?

In October, the average day length in Herald is 11h and 11min.

What time are sunrise and sunset in October in Herald?

On the first day of October in Herald, California, sunrise is at 7:01 am and sunset at 6:47 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 6:06 pm PDT.

How long on average sun shines in October in Herald?

In Herald, California, the average sunshine duration in October is 7.2h.

What is the UV index reading in October in Herald?

In Herald, the average daily maximum UV index in October is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Herald, CA

Average temperature in October - Herald, CA
  • Average high temperature in October: 76.8°F

The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in October: 53.6°F

The month with the highest average low temperature is August (58.8°F).
The coldest month (with the lowest average low temperature) is December (41°F).

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Average pressure in October
Herald, CA

Average pressure in October - Herald, CA
  • Average pressure in October: 29.99"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in October
Herald, CA

Average wind speed in October - Herald, CA
  • Average wind speed in October: 4.7mph

The windiest months (with the highest average wind speed) are February and June (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.4mph).

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Average humidity in October
Herald, CA

Average humidity in October - Herald, CA
  • Average humidity in October: 51%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (45%).

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Average rainfall in October
Herald, CA

Average rainfall in October - Herald, CA
  • Average rainfall in October: 0.59"

The wettest month (with the highest rainfall) is February (2.4").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in October
Herald, CA

Average rainfall days in October - Herald, CA
  • Average rainfall days in October: 3.2 days

The month with the highest number of rainy days is March (12.4 days).
The month with the least rainy days is June (0.9 days).

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Average snowfall days in October
Herald, CA

Average snowfall days in October - Herald, CA
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in October /
Average sunshine in October
Herald, CA

Average daylight in October / Average sunshine in October - Herald, CA
  • Average daylight in October: 11h and 1min

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 36min).

  • Average sunshine in October: 7h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

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Average sunshine days in October
Herald, CA

Average sunshine days in October - Herald, CA
  • Average sunshine days in October: 27.1 days

The month with the most sunshine days is August (29.3 days).
The month with the least sunshine days is March (17.8 days).

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Average UV index in October
Herald, CA

Average UV index in October - Herald, CA
  • Average UV index in October: 4

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in October
Herald, CA

Average cloud cover in October - Herald, CA
  • Average cloud cover in October: 14

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 4).

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Average visibility in October
Herald, CA

Average visibility in October - Herald, CA
  • Average visibility in October: 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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Herald, California, USA

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