PASADENA - Weather History and Averages

Station: PASADENA (1943 to 1944)
Country: US
State: CA
Latitude: 34.133
Longitude: -118.133

High Temperatures

On average, the day with the warmest high temperature in PASADENA is September 7 at an average of 101.4 °F (38.5 °C).

On average, the day with the coldest high temperature in PASADENA is February 21 at an average of 49.3 °F (9.6 °C).

Records

The warmest recorded high temperature in PASADENA was 104.4 °F (40.2 °C) on August 26 in the year 1944 at PASADENA — Integrated Surface Dataset (ISD) station ID: 749169 .

The coldest recorded high temperature in PASADENA was 47.3 °F (8.5 °C) on February 20 in the year 1944 at PASADENA — Integrated Surface Dataset (ISD) station ID: 749169 .

Low Temperatures

On average, the day with the warmest low temperature in PASADENA is September 8 at an average of 65.1 °F (18.4 °C).

On average, the day with the coldest low temperature in PASADENA is February 13 at an average of 36.4 °F (2.4 °C).

Records

The warmest recorded low temperature in PASADENA was 68.4 °F (20.2 °C) on September 8 in the year 1944 at PASADENA — Integrated Surface Dataset (ISD) station ID: 749169 .

The coldest recorded low temperature in PASADENA was 35.4 °F (1.9 °C) on February 14 in the year 1944 at PASADENA — Integrated Surface Dataset (ISD) station ID: 749169 .

When you are gardening in PASADENA, 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 6 of 366 days per year in PASADENA.

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 PASADENA during the spring season, the average last freeze date is no freezing temperatures all season. Expect^* the last freeze date after

January 27 in one of every two years (50%),
March 14 in one of every ten years (10%),
March 14 in one of every twenty years (5%),
March 20 in one of every hundred years (1%).

First freeze

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

February 26 in one of every two years (50%),
January 7 in one of every ten years (10%),
January 1 in one of every twenty years (5%),
December 9 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 PASADENA 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%),
February 18 in one of every ten years (10%),
March 13 in one of every twenty years (5%),
March 14 in one of every hundred years (1%).

First hard freeze

In PASADENA 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%),
February 26 in one of every ten years (10%),
February 9 in one of every twenty years (5%),
January 7 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 PASADENA during the spring season, the average last frost date is no freezing temperatures all season. Expect^* the last frost date after

March 6 in one of every two years (50%),
March 20 in one of every ten years (10%),
April 16 in one of every twenty years (5%),
April 28 in one of every hundred years (1%).

First frost

In PASADENA during the autumn (fall) season, the average frost date is no frost all season. Expect^* the first frost date before

January 4 in one of every two years (50%),
December 9 in one of every ten years (10%),
November 22 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:

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