Marin County

Marin County Weather in January

Average temperatures, rainfall, sunshine and the best places to visit in Marin County, the United States of America in January.

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Novato San Rafael Mill Valley Sausalito

Planning a getaway to Marin County, the United States of America this January and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What to Expect in Marin County in January

Marin County, the United States of America is a region in the United States of America. January in Marin County generally has mild temperatures, with precipitation levels ranging from moderate to high. It's the height of winter.

Temperatures

You can expect mild maximum daytime temperatures of around 14°C (57°F) and nighttime temperatures around 5°C (41°F) in Novato.

To learn more about the conditions in specific areas of Marin County, the United States of America, check out the map below.

Precipitation

In January, precipitation varies across different areas. From moderate rainfall in Sausalito with an average of 92 mm (3.6 in) to high rainfall in Fairfax with 142 mm (5.6 in).

Average sunshine

Sunshine levels are moderate in most locations. Novato typically sees 186 hours of sunlight, creating comfortable conditions that aren't too bright or too dim. Looking for something sunnier? Our weather planner helps you discover destinations with more reliable sunshine.

Explore Marin County by month

Pick a month to see the average temperature, rainfall and sunshine in Marin County — and find the best time to visit. (based on Novato)

January14°C (57°F) February16°C (61°F) March18°C (64°F) April20°C (68°F) May22°C (72°F) June26°C (79°F) This monthJuly27°C (81°F) August27°C (81°F) September28°C (82°F) October24°C (75°F) November18°C (64°F) December14°C (57°F)
Best Time to Visit Marin County →

Best Places to Visit in Marin County in January

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Marin County.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Marin County

What is the weather like in January for some of the most popular destinations in Marin County, the United States of America?

Temperature range in Marin County (January)

Precipitation variation in Marin County (January)

Novato

In January Novato generally has moderate temperatures with maximum daytime temperatures around 14°C (57°F), minimum nighttime temperatures around 5°C (41°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« December
January
February »
December
January
February
Max temperature
14°C (57°F)
14°C (57°F)
16°C (61°F)
Min temperature
4°C (39°F)
5°C (41°F)
6°C (43°F)
Monthly sun hours
160 hours
186 hours
209 hours
Monthly rainfall
145 mm (5.7 in)
106 mm (4.2 in)
120 mm (4.7 in)
Monthly rainy days
12 days
10 days
9 days
Weather conditions
unpleasant
unpleasant
unpleasant
Climate in Novato →

San Rafael

In January San Rafael generally has moderate temperatures with maximum daytime temperatures around 14°C (57°F), minimum nighttime temperatures around 6°C (43°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« December
January
February »
December
January
February
Max temperature
14°C (57°F)
14°C (57°F)
16°C (61°F)
Min temperature
6°C (43°F)
6°C (43°F)
7°C (45°F)
Monthly sun hours
160 hours
186 hours
209 hours
Monthly rainfall
172 mm (6.8 in)
127 mm (5 in)
135 mm (5.3 in)
Monthly rainy days
13 days
10 days
9 days
Weather conditions
unpleasant
unpleasant
unpleasant
Climate in San Rafael →

Mill Valley

In January Mill Valley generally has moderate temperatures with maximum daytime temperatures around 14°C (57°F), minimum nighttime temperatures around 6°C (43°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« December
January
February »
December
January
February
Max temperature
14°C (57°F)
14°C (57°F)
16°C (61°F)
Min temperature
6°C (43°F)
6°C (43°F)
7°C (45°F)
Monthly sun hours
160 hours
186 hours
209 hours
Monthly rainfall
172 mm (6.8 in)
122 mm (4.8 in)
128 mm (5 in)
Monthly rainy days
13 days
9 days
10 days
Weather conditions
unpleasant
unpleasant
unpleasant
Climate in Mill Valley →

Sausalito

In January Sausalito generally has moderate temperatures with maximum daytime temperatures around 15°C (59°F), minimum nighttime temperatures around 7°C (45°F) and moderate monthly rainfall. So on average the conditions are tolerable that month.

« December
January
February »
December
January
February
Max temperature
14°C (57°F)
15°C (59°F)
16°C (61°F)
Min temperature
7°C (45°F)
7°C (45°F)
8°C (46°F)
Monthly sun hours
160 hours
186 hours
209 hours
Monthly rainfall
136 mm (5.4 in)
92 mm (3.6 in)
99 mm (3.9 in)
Monthly rainy days
13 days
9 days
10 days
Weather conditions
unpleasant
tolerable
tolerable
Climate in Sausalito →

Fairfax

In January Fairfax generally has moderate temperatures with maximum daytime temperatures around 14°C (57°F), minimum nighttime temperatures around 6°C (43°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« December
January
February »
December
January
February
Max temperature
13°C (55°F)
14°C (57°F)
16°C (61°F)
Min temperature
5°C (41°F)
6°C (43°F)
6°C (43°F)
Monthly sun hours
160 hours
186 hours
209 hours
Monthly rainfall
190 mm (7.5 in)
142 mm (5.6 in)
157 mm (6.2 in)
Monthly rainy days
13 days
10 days
10 days
Weather conditions
poor
unpleasant
unpleasant
Climate in Fairfax →

Is your destination not in the list? Have a look at all destinations in Marin County, in the United States of America.

Popular cities in January

Day & night temperatures, rainfall and average weather in Marin County in January.

City Weather Day temp Night temp Rainfall
Novato 14°C (57°F) 5°C (41°F) 106 mm (4.2 in)
San Rafael 14°C (57°F) 6°C (43°F) 127 mm (5 in)
Mill Valley 14°C (57°F) 6°C (43°F) 122 mm (4.8 in)
Sausalito 15°C (59°F) 7°C (45°F) 92 mm (3.6 in)
Fairfax 14°C (57°F) 6°C (43°F) 142 mm (5.6 in)
Larkspur 14°C (57°F) 6°C (43°F) 125 mm (4.9 in)

Marin County weather in January: frequently asked questions

What is the weather like in Marin County, the United States of America in January?

Marin County, the United States of America typically experiences unpleasant weather in January, part of the winter season. Daytime highs in Novato average around 14°C (57°F), and temperatures drop to about 5°C (41°F) at night.

What is the average temperature in Marin County, the United States of America in January?

Novato averages a daytime maximum of 14°C (57°F) in January, with overnight lows close to 5°C (41°F).

Does Marin County, the United States of America get a lot of rain in January?

Novato typically receives notable rainfall in January, about 106 mm (4.2 in) on average across Marin County, the United States of America.

Is January a Good Time to Visit Marin County, the United States of America?

In our opinion, January may not be the ideal time to visit Marin County, the United States of America due to the typically unpleasant weather in Novato.

Generally speaking, April, May, June, July, August, September and October provide perfect weather in Novato. On the other hand, the weather in January, February and December tend to be unpleasant.

Interested in more climate information?

We have much more information about the climate in Marin County.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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