January weather forecast
Orinda, CA

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Weather in January

January is a refreshing winter month in Orinda, California, with an average temperature fluctuating between 56.5°F (13.6°C) and 43.3°F (6.3°C).

Temperature

January's beginning signals an average high-temperature of a moderate 56.5°F (13.6°C), barely different from December's 55.2°F (12.9°C). Orinda, during the month of January, experiences an average low-temperature of 43.3°F (6.3°C).

Humidity

In January, the average relative humidity in Orinda is 73%.

Rainfall

In January, the rain falls for 10.1 days. Throughout January, 2.13" (54mm) of precipitation is accumulated. In Orinda, during the entire year, the rain falls for 74.4 days and collects up to 12.6" (320mm) of precipitation.

Daylight

In Orinda, California, the average length of the day in January is 9h and 54min.
On the first day of the month, sunrise is at 7:24 am and sunset at 5:00 pm. On the last day of January, sunrise is at 7:13 am and sunset at 5:30 pm PST.

Sunshine

In January, the average sunshine in Orinda is 6.1h.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Orinda, California. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 3 in January translates into this advice:
Heed the precautions - It is counselled to guard against solar damage. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Frequently asked questions

What are the temperatures in Orinda in January?

An average high-temperature, in January, in Orinda, is 56.5°F (13.6°C) and the average low-temperature is 43.3°F (6.3°C).

What is the average humidity in January in Orinda?

In January, the average relative humidity in Orinda is 73%.

How many days does it rain in January in Orinda?

In Orinda, during January, the rain falls for 10.1 days and regularly aggregates up to 2.13" (54mm) of precipitation.

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

In January, the average day length in Orinda, California, is 9h and 54min.

What time are sunrise and sunset in January in Orinda?

In January, on the first day of the month, sunrise is at 7:24 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:30 pm PST.

How many hours of sunshine does Orinda have in January?

In Orinda, the average sunshine duration in January is 6.1h.

When is the lowest UV index in Orinda?

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

How high is the UV index in January in Orinda?

In Orinda, California, the average daily maximum UV index in January is 3. A UV Index estimate of 3 to 5 represents a medium health risk 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
Orinda, CA

Average temperature in January - Orinda, CA
  • Average high temperature in January: 56.5°F

The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is December (55.2°F).

  • Average low temperature in January: 43.3°F

The months with the highest average low temperature are August and September (56.8°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).

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Average pressure in January
Orinda, CA

Average pressure in January - Orinda, CA
  • Average pressure in January: 30.14"Hg

The month with the highest atmospheric pressure is January (30.14"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
Orinda, CA

Average wind speed in January - Orinda, CA
  • Average wind speed in January: 4.8mph

The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).

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Average humidity in January
Orinda, CA

Average humidity in January - Orinda, CA
  • Average humidity in January: 73%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is October (60%).

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Average rainfall in January
Orinda, CA

Average rainfall in January - Orinda, CA
  • Average rainfall in January: 2.13"

The wettest month (with the highest rainfall) is February (2.6").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in January
Orinda, CA

Average rainfall days in January - Orinda, CA
  • Average rainfall days in January: 10.1 days

The month with the highest number of rainy days is March (13.1 days).
The month with the least rainy days is August (0.8 days).

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

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

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in January: 6h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in January
Orinda, CA

Average sunshine days in January - Orinda, CA
  • Average sunshine days in January: 19.7 days

The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (16.3 days).

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Average UV index in January
Orinda, CA

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

The month with the highest UV index is June (UV index 6).
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
Orinda, CA

Average cloud cover in January - Orinda, CA
  • Average cloud cover in January: 33

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 8).

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Average visibility in January
Orinda, CA

Average visibility in January - Orinda, 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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Orinda, California, USA

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