October weather forecast and climate
Tustin, CA

Weather in October

October, like September, in Tustin, California, is a moderately hot autumn month, with average temperature fluctuating between 75°F (23.9°C) and 61.5°F (16.4°C).

Temperature

In Tustin, the average high-temperature is essentially the same as in September - a still moderately hot 75°F (23.9°C). In Tustin, in October, the average low-temperature is 61.5°F (16.4°C).

Humidity

The average relative humidity in Tustin is 60%.

Rainfall

In Tustin, it is raining for 3.6 days, with typically 0.2" (5mm) of accumulated precipitation. Throughout the year, there are 51.9 rainfall days, and 4.13" (105mm) of precipitation is accumulated.

Daylight

In Tustin, the average length of the day in October is 11.3h.

Sunshine

The average sunshine in Tustin is 8.5h.

UV index

In Tustin, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: In October, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in October in Tustin?

The average relative humidity in October in Tustin is 60%.

How many days does it rain in October in Tustin?

In Tustin, during October, the rain falls for 3.6 days and regularly aggregates up to 0.2" (5mm) of precipitation.

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

The average length of the day in October is 11.3h.

How many hours of sunshine does Tustin have in October?

The average sunshine in October is 8.5h.

What is the UV index reading in October in Tustin?

The average daily maximum UV index in October in Tustin is 5. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in October
Tustin, CA

Average temperature in October - Tustin, CA
  • Average high temperature in October: 75°F

The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (63.1°F).

  • Average low temperature in October: 61.5°F

The month with the highest average low temperature is August (65.1°F).
The coldest month (with the lowest average low temperature) is February (50.7°F).

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Average pressure in October
Tustin, CA

Average pressure in October - Tustin, CA
  • Average pressure in October: 29.94"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in October
Tustin, CA

Average wind speed in October - Tustin, CA
  • Average wind speed in October: 4.8mph

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest months (with the lowest average wind speed) are August, September and October (4.8mph).

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Average humidity in October
Tustin, CA

Average humidity in October - Tustin, CA
  • Average humidity in October: 60%

The month with the highest relative humidity is June (70%).
The month with the lowest relative humidity is November (55%).

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Average rainfall in October
Tustin, CA

Average rainfall in October - Tustin, CA
  • Average rainfall in October: 0.2"

The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in October
Tustin, CA

Average rainfall days in October - Tustin, CA
  • Average rainfall days in October: 3.6 days

The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.3 days).

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

Average daylight in October / Average sunshine in October - Tustin, CA
  • Average daylight in October: 11.3h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in October: 8.5h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in October
Tustin, CA

Average sunshine days in October - Tustin, CA
  • Average sunshine days in October: 25.2 days

The month with the most sunshine days is June (26.9 days).
The month with the least sunshine days is February (20.3 days).

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Average UV index in October
Tustin, CA

Average UV index in October - Tustin, CA
  • Average UV index in October: 5

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in October
Tustin, CA

Average cloud cover in October - Tustin, CA
  • Average cloud cover in October: 13

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 October
Tustin, CA

Average visibility in October - Tustin, CA
  • Average visibility in October: 6mi

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

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