2024 Compare Climate & Weather:
San Fernando, CA vs Altadena, CA
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Highlights
On average, there are 287 sunny days per year in Altadena. San Fernando averages 288 sunny days per year. The US average is 205 sunny days.
Altadena, California gets 22.5 inches of rain, on average, per year. San Fernando, California gets 16.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.
Altadena averages 0 inches of snow per year. San Fernando averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.
Weather Highlights
Altadena, California
Summer High: the July high is around 86.4 degrees
Winter Low: the January low is 46.7
Rain: averages 22.5 inches of rain a year
Snow: averages 0 inches of snow a year
San Fernando, California
Summer High: the July high is around 87.1 degrees
Winter Low: the January low is 47.1
Rain: averages 16.5 inches of rain a year
Snow: averages 0 inches of snow a year
BESTPLACES COMFORT INDEX
AltadenaThe annual BestPlaces Comfort Index for Altadena is 9.1 (10=best), which means it is one of the most pleasant places in California.
9.1 / 10
June, October and May are the most pleasant months in Altadena, while January and February are the least comfortable months.
San FernandoThe annual BestPlaces Comfort Index for San Fernando is 9.1 (10=best), which means it is one of the most pleasant places in California.
9.1 / 10
June, May and October are the most pleasant months in San Fernando, while February and January are the least comfortable months.
Today's Weather - San Fernando, CA
6 AM PST
Patchy Fog then Mostly Sunny
52°F
DAY | DESCRIPTION | HIGH / LOW | WIND |
---|
Today | Patchy Fog then Mostly Sunny | 75° / 56° | SE 5 to 10 mph |
Saturday | Patchy Fog then Slight Chance Light Rain | 67° / 52° | SSW 5 to 15 mph |
Sunday | Mostly Sunny | 65° / 48° | WNW 5 to 20 mph |
Monday | Sunny | 74° / 52° | NW 5 to 15 mph |
Tuesday | Sunny | 78° / 53° | WNW 10 to 15 mph |
Wednesday | Sunny | 78° / 54° | NW 5 to 15 mph |
Thursday | Sunny | 78° / 55° | SSE 5 to 15 mph |
Today's Weather - Altadena, CA
6 AM PST
Patchy Fog then Mostly Sunny
51°F
DAY | DESCRIPTION | HIGH / LOW | WIND |
---|
Today | Patchy Fog then Mostly Sunny | 73° / 54° | SSW 5 to 10 mph |
Saturday | Patchy Fog then Slight Chance Light Rain | 64° / 50° | SSW 5 to 15 mph |
Sunday | Mostly Sunny | 63° / 46° | WSW 10 to 20 mph |
Monday | Sunny | 72° / 50° | N 5 to 15 mph |
Tuesday | Sunny | 75° / 52° | WNW 5 to 15 mph |
Wednesday | Sunny | 76° / 53° | WSW 5 to 15 mph |
Thursday | Sunny | 76° / 54° | SSE 5 to 15 mph |
Average Monthly High / Low (°F)
Month | San Fernando, CA | Altadena, CA |
---|
January | 66° / 47° | 68° / 47° |
February | 67° / 47° | 68° / 48° |
March | 69° / 49° | 70° / 49° |
April | 72° / 51° | 74° / 51° |
May | 76° / 55° | 76° / 56° |
June | 81° / 58° | 81° / 59° |
July | 87° / 62° | 86° / 63° |
August | 89° / 63° | 88° / 63° |
September | 86° / 62° | 86° / 62° |
October | 79° / 56° | 80° / 57° |
November | 73° / 51° | 73° / 51° |
December | 66° / 46° | 67° / 46° |
Hot, Freezing, Rainy, Snowy Days: San Fernando / Altadena
Month | Hot Days | Freezing Days | Rainy Days | Snowy Days |
---|
January | 0 / 0 | 0 / 0 | 6 / 6 | 0 / 0 |
February | 0 / 0 | 0 / 0 | 7 / 6 | 0 / 0 |
March | 0 / 0 | 0 / 0 | 5 / 6 | 0 / 0 |
April | 2 / 2 | 0 / 0 | 3 / 3 | 0 / 0 |
May | 2 / 2 | 0 / 0 | 2 / 2 | 0 / 0 |
June | 4 / 4 | 0 / 0 | 1 / 1 | 0 / 0 |
July | 11 / 9 | 0 / 0 | 0 / 0 | 0 / 0 |
August | 14 / 12 | 0 / 0 | 0 / 1 | 0 / 0 |
September | 11 / 10 | 0 / 0 | 1 / 1 | 0 / 0 |
October | 5 / 5 | 0 / 0 | 3 / 3 | 0 / 0 |
November | 1 / 1 | 0 / 0 | 3 / 3 | 0 / 0 |
December | 0 / 0 | 0 / 0 | 5 / 5 | 0 / 0 |
August is the hottest month for San Fernando with an average high temperature of 89.0°, which ranks it as about average compared to other places in California. In San Fernando, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Fernando are October, May and June.
August is the hottest month for Altadena with an average high temperature of 88.1°, which ranks it as about average compared to other places in California. In Altadena, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Altadena are May, October and June.
December has the coldest nighttime temperatures for San Fernando with an average of 46.2°. This is one of the warmest places in California.
December has the coldest nighttime temperatures for Altadena with an average of 45.9°. This is one of the warmest places in California.
In San Fernando, there are 48.9 days annually when the high temperature is over 90°, which is about average compared to other places in California.
In Altadena, there are 44.2 days annually when the high temperature is over 90°, which is about average compared to other places in California.
In San Fernando, there are 0.4 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.
In Altadena, there are 0.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.
In San Fernando, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.
In Altadena, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.
February is the wettest month in San Fernando with 4.1 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 62% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 16.5 inches in San Fernando means that it is about average compared to other places in California.
February is the wettest month in Altadena with 5.5 inches of rain, and the driest month is July with 0.1 inches. The wettest season is Spring with 59% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 22.5 inches in Altadena means that it is wetter than most places in California.
February is the rainiest month in San Fernando with 6.6 days of rain, and July is the driest month with only 0.3 rainy days. There are 35.6 rainy days annually in San Fernando, which is less rainy than most places in California. The rainiest season is Spring when it rains 49% of the time and the driest is Autumn with only a 4% chance of a rainy day.
February is the rainiest month in Altadena with 6.4 days of rain, and July is the driest month with only 0.4 rainy days. There are 37.4 rainy days annually in Altadena, which is less rainy than most places in California. The rainiest season is Spring when it rains 46% of the time and the driest is Autumn with only a 5% chance of a rainy day.
There is rarely any recorded snowfall in San Fernando, ranking it as one of the least snowy places in California.
There is rarely any recorded snowfall in Altadena, ranking it as one of the least snowy places in California.
Any measurable snowfall is a rare occurance in San Fernando.
Any measurable snowfall is a rare occurance in Altadena.
DID YOU KNOW?
Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.
Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.
Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.
Reviews for San Fernando 2 Reviews
Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More
Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More
Start Your Review of San Fernando
Reviews for Altadena 2 Reviews
Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't More
Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but More
Start Your Review of Altadena
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