custom location - Weather History and Averages

• Latitude: 33.872
• Longitude: -117.979

High Temperatures

On average, the day with the warmest high temperature in custom location is September 5 at an average of 85.0 °F (29.4 °C).

On average, the day with the coldest high temperature in custom location is December 31 at an average of 65.4 °F (18.5 °C).

Records

The warmest recorded high temperature in custom location was 120.9 °F (49.4 °C) on September 6 in the year 2020 at CHINO AIRPORT — Integrated Surface Dataset (ISD) station ID: 722899 — Weather Bureau Army Navy (WBAN): 03179 .

The coldest recorded high temperature in custom location was 43.0 °F (6.1 °C) on January 10 in the year 1949 at EL TORO MCAS — Weather Bureau Army Navy (WBAN): 93101 .

Low Temperatures

On average, the day with the warmest low temperature in custom location is August 12 at an average of 64.4 °F (18.0 °C).

On average, the day with the coldest low temperature in custom location is January 3 at an average of 44.0 °F (6.7 °C).

Records

The warmest recorded low temperature in custom location was 104.0 °F (40.0 °C) on June 20 in the year 2016 at BRACKETT FIELD AIRPORT — Integrated Surface Dataset (ISD) station ID: 722887 — Weather Bureau Army Navy (WBAN): 03180 .

The coldest recorded low temperature in custom location was 9.9 °F (-12.3 °C) on February 25 in the year 1996 at HUNTINGTON BEACH — Integrated Surface Dataset (ISD) station ID: 722978 .

Freeze

When you are gardening in custom location, consider the chance that the weather may freeze and harm your plants. There is a greater than 5% chance of temperatures dropping below freezing in 0 of 366 days per year in custom location.

According to the USA National Weather Service:

Freeze occurs when the temperature drops to 32° Fahrenheit or lower. A freeze will result in significant damage to many unprotected plants, especially if the temperature remains at-or-below freezing for several hours.

Last freeze

In custom location during the spring season, the average last freeze date is January 5. Expect^* the last freeze date after

• No freezing temperatures all season in one of every two years (50%),
• January 18 in one of every ten years (10%),
• February 1 in one of every twenty years (5%),
• February 27 in one of every hundred years (1%).

First freeze

In custom location during the autumn (fall) season, the average first freeze date is January 6. Expect^* the first freeze date before

• No freezing temperatures all season in one of every two years (50%),
• December 26 in one of every ten years (10%),
• December 20 in one of every twenty years (5%),
• December 5 in one of every hundred years (1%).

Hard Freeze

According to the USA National Weather Service:

Hard freeze typically occurs when the temperature reaches 28° Fahrenheit or lower for at least an hour (or more). This usually means that most seasonal vegetation will be destroyed. In addition, there is a possibility of damage to unprotected outdoor plumbing/un-drained sprinkler systems etc.

Last hard freeze

In custom location during the spring season, the average last hard freeze date is no freezing temperatures all season. Expect^* the last hard freeze date after

• No freezing temperatures all season in one of every two years (50%),
• No freezing temperatures all season in one of every ten years (10%),
• No freezing temperatures all season in one of every twenty years (5%),
• January 14 in one of every hundred years (1%).

First hard freeze

In custom location during the autumn (fall) season, the average first hard freeze date is no freezing temperatures all season. Expect^* the first hard freeze date before

• No hard freeze temperatures all season in one of every two years (50%),
• No hard freeze temperatures all season in one of every ten years (10%),
• No hard freeze temperatures all season in one of every twenty years (5%),
• December 27 in one of every hundred years (1%).

Frost

Frost can happen at temperatures above freezing and damage delicate plants. According to the USA National Weather Service:

Frost occurs when there is a solid deposition of water vapor from the air. Frost will form when solid surfaces are cooled below the dew point. An air temperature range of 33°- 36° Fahrenheit (or colder), along with light winds, is usually needed to initiate frost formation. At least minor damage is possible to plants. One must keep in mind that frost is not guaranteed if the air is very dry and/or winds are roughly 8+ MPH.

Last frost

In custom location during the spring season, the average last frost date is February 18. Expect^* the last frost date after

• January 27 in one of every two years (50%),
• February 28 in one of every ten years (10%),
• March 5 in one of every twenty years (5%),
• March 18 in one of every hundred years (1%).

First frost

In custom location during the autumn (fall) season, the average frost date is December 5. Expect^* the first frost date before

• December 24 in one of every two years (50%),
• December 3 in one of every ten years (10%),
• November 24 in one of every twenty years (5%),
• November 15 in one of every hundred years (1%).

Details

If you would like to see the temperatures for specific days, you can click on the corresponding links below: