January weather forecast
Larkspur, CA

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Weather in January

January, like December, is another mild winter month in Larkspur, California, with an average temperature varying between 45.5°F (7.5°C) and 56.1°F (13.4°C).

Temperature

Larkspur commences January with an average high-temperature of a still mild 56.1°F (13.4°C), maintaining a close resemblance to the previous month. Nighttime temperatures in January average to a frosty 45.5°F (7.5°C) in Larkspur, California.

Humidity

The average relative humidity in January is 74%.

Rainfall

In January, in Larkspur, the rain falls for 5.9 days. Throughout January, 0.59" (15mm) of precipitation is accumulated. Throughout the year, in Larkspur, there are 48 rainfall days, and 3.94" (100mm) of precipitation is accumulated.

Daylight

In January, the average length of the day is 9h and 53min.
On the first day of January, sunrise is at 7:25 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:31 pm PST.

Sunshine

The average sunshine in January is 5.7h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 3 during January leads to these instructions:
Take precautions - Protection against sun damage is advised. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

What are January temperatures in Larkspur?

January temperatures vary between a high-temperature of 56.1°F (13.4°C) and a low-temperature of 45.5°F (7.5°C).

What is the average humidity in January in Larkspur?

The average relative humidity in January in Larkspur is 74%.

How many days does it rain in January in Larkspur?

In January, in Larkspur, the rain falls for 5.9 days. Throughout January, 0.59" (15mm) of precipitation is accumulated.

What is the average length of the day in January in Larkspur?

In Larkspur, California, the average day length in January is 9h and 53min.

When are sunrise and sunset in January in Larkspur?

In January, on the first day of the month, sunrise is at 7:25 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:31 pm PST.

How many hours of sunshine does Larkspur have in January?

In January, the average sunshine duration in Larkspur, California, is 5.7h.

What is the month with the lowest UV index in Larkspur?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3.

What is the UV index reading in January in Larkspur?

In January, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Larkspur, CA

Average temperature in January - Larkspur, CA
  • Average high temperature in January: 56.1°F

The warmest month (with the highest average high temperature) is September (72.3°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in January: 45.5°F

The month with the highest average low temperature is September (56.1°F).
The coldest month (with the lowest average low temperature) is December (45.3°F).

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Average pressure in January
Larkspur, CA

Average pressure in January - Larkspur, CA
  • Average pressure in January: 30.13"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

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Average wind speed in January
Larkspur, CA

Average wind speed in January - Larkspur, CA
  • Average wind speed in January: 6mph

The windiest month (with the highest average wind speed) is May (7.8mph).
The calmest months (with the lowest average wind speed) are October and November (5.5mph).

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Average humidity in January
Larkspur, CA

Average humidity in January - Larkspur, CA
  • Average humidity in January: 74%

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in January
Larkspur, CA

Average rainfall in January - Larkspur, CA
  • Average rainfall in January: 0.59"

The wettest month (with the highest rainfall) is February (0.87").
The driest months (with the least rainfall) are June, July, August and September (0.04").

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Average rainfall days in January
Larkspur, CA

Average rainfall days in January - Larkspur, CA
  • Average rainfall days in January: 5.9 days

The month with the highest number of rainy days is March (8.8 days).
The months with the least rainy days are June and August (1.2 days).

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Average daylight in January /
Average sunshine in January
Larkspur, CA

Average daylight in January / Average sunshine in January - Larkspur, CA
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in January: 5h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in January
Larkspur, CA

Average sunshine days in January - Larkspur, CA
  • Average sunshine days in January: 24.2 days

The month with the most sunshine days is June (26.4 days).
The month with the least sunshine days is March (20.7 days).

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Average UV index in January
Larkspur, CA

Average UV index in January - Larkspur, CA
  • Average UV index in January: 3

The months with the highest UV index are April, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in January
Larkspur, CA

Average cloud cover in January - Larkspur, CA
  • Average cloud cover in January: 36

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 19).

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Average visibility in January
Larkspur, CA

Average visibility in January - Larkspur, CA
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Larkspur, California, USA

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