January weather forecast
Belmont, CA

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Weather in January

January, the same as December, in Belmont, California, is another mild winter month, with an average temperature ranging between min 46°F (7.8°C) and max 56.8°F (13.8°C).

Temperature

Upon the beginning of January, Belmont's high-temperatures register at a still mild 56.8°F (13.8°C), closely mirroring the preceding month. Throughout January, an average low-temperature of 46°F (7.8°C) is expected in Belmont.

Humidity

The average relative humidity in January in Belmont, California, is 73%.

Rainfall

In Belmont, during January, the rain falls for 9.9 days and regularly aggregates up to 1.69" (43mm) of precipitation. Throughout the year, in Belmont, there are 77.5 rainfall days, and 11.22" (285mm) of precipitation is accumulated.

Daylight

In Belmont, California, the average length of the day in January is 9h and 56min.
On the first day of January, sunrise is at 7:23 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:31 pm PST.

Sunshine

The average sunshine in January in Belmont is 6.2h.

UV index

In January, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In January, the average maximum UV index of 4 translates into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

What is the temperature in January in Belmont?

Belmont in January has an average high-temperature of 56.8°F (13.8°C) and an average low-temperature of 46°F (7.8°C).

What is the average humidity in January in Belmont?

The average relative humidity in January in Belmont, California, is 73%.

How many days does it rain in January in Belmont?

In Belmont, in January, during 9.9 rainfall days, 1.69" (43mm) of precipitation is typically accumulated.

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

The average day length in January in Belmont is 9h and 56min.

When is the sunrise / sunset in January in Belmont?

In January, on the first day of the month, sunrise is at 7:23 am and sunset at 5:01 pm. On the last day of the month, in Belmont, sunrise is at 7:13 am and sunset at 5:31 pm PST.

How many hours of sunshine does Belmont have in January?

In Belmont, California, the average sunshine duration in January is 6.2h.

How high is the UV index in January in Belmont?

In Belmont, the average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability 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
Belmont, CA

Average temperature in January - Belmont, CA
  • Average high temperature in January: 56.8°F

The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is December (55.9°F).

  • Average low temperature in January: 46°F

The month with the highest average low temperature is September (56.7°F).
The coldest month (with the lowest average low temperature) is January (46°F).

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Average pressure in January
Belmont, CA

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).

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Average wind speed in January
Belmont, CA

Average wind speed in January - Belmont, CA
  • Average wind speed in January: 5.8mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is October (5.5mph).

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Average humidity in January
Belmont, CA

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

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in January
Belmont, CA

Average rainfall in January - Belmont, CA
  • Average rainfall in January: 1.69"

The wettest month (with the highest rainfall) is February (2.09").
The driest months (with the least rainfall) are July and August (0.08").

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Average rainfall days in January
Belmont, CA

Average rainfall days in January - Belmont, CA
  • Average rainfall days in January: 9.9 days

The month with the highest number of rainy days is March (13 days).
The month with the least rainy days is July (1.8 days).

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

Average daylight in January / Average sunshine in January - Belmont, 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
Belmont, CA

Average sunshine days in January - Belmont, CA
  • Average sunshine days in January: 20.2 days

The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is March (16.3 days).

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Average UV index in January
Belmont, CA

Average UV index in January - Belmont, CA
  • Average UV index in January: 4

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

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Average cloud cover in January
Belmont, CA

Average cloud cover in January - Belmont, CA
  • Average cloud cover in January: 32

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in January
Belmont, CA

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

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