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2024 Compare Climate & Weather:
Princeton, CA vs Mill Valley, CA

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Highlights

On average, there are 255 sunny days per year in Mill Valley. Princeton averages 261 sunny days per year. The US average is 205 sunny days.

Mill Valley, California gets 40.6 inches of rain, on average, per year. Princeton, California gets 24.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Mill Valley averages 0 inches of snow per year. Princeton averages 0.1 inches of snow per year. The US average is 27.8 inches of snow per year.


Weather Highlights

Mill Valley, California
Summer High:
the July high is around 76.5 degrees
Winter Low: the January low is 42.9
Rain: averages 40.6 inches of rain a year
Snow: averages 0 inches of snow a year

Princeton, California
Summer High:
the July high is around 94.2 degrees
Winter Low: the January low is 37
Rain: averages 24.6 inches of rain a year
Snow: averages 0.1 inches of snow a year


BESTPLACES COMFORT INDEX
Mill Valley

The annual BestPlaces Comfort Index for Mill Valley is 8.4 (10=best), which means it is more comfortable than most places in California.

8.4 / 10
September, August and July are the most pleasant months in Mill Valley, while January and December are the least comfortable months.

Princeton

The annual BestPlaces Comfort Index for Princeton is 8.1 (10=best), which means it is about average compared to other places in California.

8.1 / 10
May, October and April are the most pleasant months in Princeton, while January and December are the least comfortable months.


Today's Weather - Princeton, CA

7 AM PST

Sunny

48°F

DAYDESCRIPTIONHIGH / LOWWIND
TodaySunny76° / 50°N 6 to 9 mph
SundaySunny79° / 48°NW 8 mph
MondaySunny76° / 49°NNW 7 to 14 mph
TuesdaySunny78° / 52°NNW 14 mph
WednesdaySunny79° / 52°NNW 18 mph
ThursdaySunny84° / 52°NNW 14 mph
FridaySunny85° / 54°ENE 10 mph

Today's Weather - Mill Valley, CA

7 AM PST

Mostly Sunny

48°F

DAYDESCRIPTIONHIGH / LOWWIND
TodayMostly Sunny66° / 50°NNW 6 to 16 mph
SundaySunny66° / 46°WNW 10 to 17 mph
MondaySunny67° / 46°NW 14 to 18 mph
TuesdaySunny69° / 49°NW 12 to 18 mph
WednesdaySunny70° / 49°NW 13 to 16 mph
ThursdaySunny68° / 49°NW 8 to 14 mph
FridaySunny69° / 50°WNW 7 to 13 mph

Average Monthly High / Low (°F)
MonthPrinceton, CAMill Valley, CA
January56° / 37°55° / 43°
February61° / 40°60° / 45°
March67° / 43°63° / 46°
April74° / 45°66° / 47°
May82° / 52°70° / 50°
June89° / 57°74° / 53°
July94° / 60°77° / 54°
August93° / 58°77° / 54°
September90° / 55°77° / 54°
October80° / 48°72° / 51°
November65° / 41°63° / 47°
December56° / 37°55° / 43°

Hot, Freezing, Rainy, Snowy Days: Princeton / Mill Valley
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 08 / 111 / 130 / 0
February0 / 03 / 010 / 120 / 0
March0 / 01 / 09 / 110 / 0
April1 / 00 / 06 / 70 / 0
May7 / 10 / 04 / 40 / 0
June14 / 20 / 01 / 20 / 0
July23 / 30 / 00 / 10 / 0
August22 / 30 / 00 / 10 / 0
September16 / 30 / 01 / 20 / 0
October4 / 10 / 03 / 50 / 0
November0 / 02 / 07 / 90 / 0
December0 / 08 / 19 / 120 / 0
July is the hottest month for Princeton with an average high temperature of 94.2°, which ranks it as warmer than most places in California. In Princeton, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Princeton are October, May and April.

September is the hottest month for Mill Valley with an average high temperature of 76.9°, which ranks it as cooler than most places in California. In Mill Valley, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mill Valley are September, August and July.


December has the coldest nighttime temperatures for Princeton with an average of 36.7°. This is colder than most places in California.

January has the coldest nighttime temperatures for Mill Valley with an average of 42.9°. This is warmer than most places in California.



In Princeton, there are 85.3 days annually when the high temperature is over 90°, which is hotter than most places in California.

In Mill Valley, there are 12.3 days annually when the high temperature is over 90°, which is cooler than most places in California.



In Princeton, there are 22.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in California.

In Mill Valley, there are 2.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.



In Princeton, 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 Mill Valley, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.



January is the wettest month in Princeton with 5.0 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 58% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 24.6 inches in Princeton means that it is wetter than most places in California.


December is the wettest month in Mill Valley with 8.3 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 58% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 40.6 inches in Mill Valley means that it is wetter than most places in California.


January is the rainiest month in Princeton with 11.2 days of rain, and July is the driest month with only 0.1 rainy days. There are 61.7 rainy days annually in Princeton, which is rainier 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 3% chance of a rainy day.

January is the rainiest month in Mill Valley with 12.8 days of rain, and July is the driest month with only 0.9 rainy days. There are 78.1 rainy days annually in Mill Valley, which is rainier than most places in California. The rainiest season is Spring when it rains 48% of the time and the driest is Autumn with only a 5% chance of a rainy day.



An annual snowfall of 0.1 inches in Princeton means that it is snowier than most places in California.

There is rarely any recorded snowfall in Mill Valley, ranking it as one of the least snowy places in California.



December is the snowiest month in Princeton with 0.1 inches of snow, and no months of the year have significant snowfall.

Any measurable snowfall is a rare occurance in Mill Valley.


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 Princeton    2 Reviews

Over 15 years ago

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

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Over 15 years ago

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

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Reviews for Mill Valley    2 Reviews

Over 15 years ago

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

   |    Reply

Over 15 years ago

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

   |    Reply

Start Your Review of Mill Valley

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ZIPS IN PRINCETON, CALIFORNIA
95970
ZIPS IN MILL VALLEY, CALIFORNIA
94941

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