SAN DIEGO/MONTGOMER - Weather History and Averages

Station: SAN DIEGO/MONTGOMER (1973 to 1990)
Country: US
State: CA
Latitude: 32.817
Longitude: -117.133

High Temperatures

On average, the day with the warmest high temperature in SAN DIEGO/MONTGOMER is September 4 at an average of 82.4 °F (28.0 °C).

On average, the day with the coldest high temperature in SAN DIEGO/MONTGOMER is January 7 at an average of 63.8 °F (17.7 °C).

Records

The warmest recorded high temperature in SAN DIEGO/MONTGOMER was 106.0 °F (41.1 °C) on July 2 in the year 1985 at SAN DIEGO/MONTGOMER — Integrated Surface Dataset (ISD) station ID: 722901 .

The coldest recorded high temperature in SAN DIEGO/MONTGOMER was 50.0 °F (10.0 °C) on January 5 in the year 1973 at SAN DIEGO/MONTGOMER — Integrated Surface Dataset (ISD) station ID: 722901 .

Low Temperatures

On average, the day with the warmest low temperature in SAN DIEGO/MONTGOMER is September 4 at an average of 65.8 °F (18.8 °C).

On average, the day with the coldest low temperature in SAN DIEGO/MONTGOMER is December 26 at an average of 42.0 °F (5.5 °C).

Records

The warmest recorded low temperature in SAN DIEGO/MONTGOMER was 77.0 °F (25.0 °C) on September 5 in the year 1988 at SAN DIEGO/MONTGOMER — Integrated Surface Dataset (ISD) station ID: 722901 .

The coldest recorded low temperature in SAN DIEGO/MONTGOMER was 28.0 °F (-2.2 °C) on February 6 in the year 1990 at SAN DIEGO/MONTGOMER — Integrated Surface Dataset (ISD) station ID: 722901 .

When you are gardening in SAN DIEGO/MONTGOMER, 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 3 of 366 days per year in SAN DIEGO/MONTGOMER.

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 SAN DIEGO/MONTGOMER during the spring season, the average last freeze date is December 13. Expect^* the last freeze date after

January 2 in one of every two years (50%),
February 22 in one of every ten years (10%),
March 4 in one of every twenty years (5%),
March 13 in one of every hundred years (1%).

First freeze

In SAN DIEGO/MONTGOMER during the autumn (fall) season, the average first freeze date is January 18. Expect^* the first freeze date before

January 6 in one of every two years (50%),
December 13 in one of every ten years (10%),
December 8 in one of every twenty years (5%),
November 21 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 SAN DIEGO/MONTGOMER 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%),
January 2 in one of every ten years (10%),
January 29 in one of every twenty years (5%),
March 3 in one of every hundred years (1%).

First hard freeze

In SAN DIEGO/MONTGOMER 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%),
January 1 in one of every ten years (10%),
December 26 in one of every twenty years (5%),
December 12 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 SAN DIEGO/MONTGOMER during the spring season, the average last frost date is January 22. Expect^* the last frost date after

February 20 in one of every two years (50%),
March 13 in one of every ten years (10%),
March 29 in one of every twenty years (5%),
April 8 in one of every hundred years (1%).

First frost

In SAN DIEGO/MONTGOMER during the autumn (fall) season, the average frost date is December 28. Expect^* the first frost date before

December 13 in one of every two years (50%),
November 26 in one of every ten years (10%),
November 19 in one of every twenty years (5%),
November 16 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:

January
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30	31

February
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29

March
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30	31

April
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30

May
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30	31

June
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30

July
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30	31

August
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30	31

September
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30

October
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30	31

November
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30

December
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30	31