January weather forecast
Bethel Island, CA

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Weather in January

January is a moderate winter month in Bethel Island, California, with an average temperature fluctuating between 56.1°F (13.4°C) and 41.5°F (5.3°C).

Temperature

January brings an average high-temperature of a mild 56.1°F (13.4°C), showing a slight difference from December's 55°F (12.8°C). The temperature dips to an average of 41.5°F (5.3°C) during January nights.

Humidity

With an average relative humidity of 74%, January is the most humid month.

Rainfall

In January, the rain falls for 8.6 days. Throughout January, 1.89" (48mm) of precipitation is accumulated. In Bethel Island, California, during the entire year, the rain falls for 62 days and collects up to 10.16" (258mm) of precipitation.

Snowfall

January through November are months without snowfall in Bethel Island, California.

Daylight

In Bethel Island, the average length of the day in January is 9h and 53min.
On the first day of the month, sunrise is at 7:22 am and sunset at 4:57 pm. On the last day of January, in Bethel Island, sunrise is at 7:11 am and sunset at 5:28 pm PST.

Sunshine

The average sunshine in January is 6h.

UV index

The months with the lowest UV index in Bethel Island 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 health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In January, a regular UV index of 3 translates into these guidelines:
Undertake protective steps - Preventing sun damage is advised. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
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Frequently asked questions

What is the usual temperature for Bethel Island in January?

In January, the average high-temperature and low-temperature in Bethel Island, California, are 56.1°F (13.4°C) and 41.5°F (5.3°C) respectively.

What is the most humid month in Bethel Island?

The most humid month in Bethel Island, California, is January, with an average relative humidity of 74%.

What is the average humidity in January in Bethel Island?

The average relative humidity in January in Bethel Island is 74%.

How many days does it rain in January in Bethel Island?

In Bethel Island, during January, the rain falls for 8.6 days and regularly aggregates up to 1.89" (48mm) of precipitation.

When it does not snow in Bethel Island?

In Bethel Island, snow does not fall in January through November.

Does it snow in Bethel Island in January?

In January, in Bethel Island, California, it doesn't snow. December is the latest month when it typically snows.

What is the average length of the day in January in Bethel Island?

The average day length in January is 9h and 53min.

When are sunrise and sunset in January in Bethel Island?

In January, on the first day of the month, sunrise is at 7:22 am and sunset at 4:57 pm. On the last day of the month, in Bethel Island, California, sunrise is at 7:11 am and sunset at 5:28 pm PST.

How many hours of sunshine does Bethel Island have in January?

In Bethel Island, the average sunshine duration in January is 6h.

What are the months with the lowest UV index in Bethel Island?

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

What is the UV index reading in January in Bethel Island?

The average daily maximum UV index in January in Bethel Island, California, is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Bethel Island, CA

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

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in January: 41.5°F

The month with the highest average low temperature is September (57.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

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Average pressure in January
Bethel Island, CA

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in January
Bethel Island, CA

Average wind speed in January - Bethel Island, CA
  • Average wind speed in January: 4.5mph

The windiest month (with the highest average wind speed) is June (7.8mph).
The calmest months (with the lowest average wind speed) are January and November (4.5mph).

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Average humidity in January
Bethel Island, CA

Average humidity in January - Bethel Island, CA
  • Average humidity in January: 74%

The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is September (52%).

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Average rainfall in January
Bethel Island, CA

Average rainfall in January - Bethel Island, CA
  • Average rainfall in January: 1.89"

The wettest month (with the highest rainfall) is February (2.09").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in January
Bethel Island, CA

Average rainfall days in January - Bethel Island, CA
  • Average rainfall days in January: 8.6 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (0.8 days).

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Average snowfall days in January
Bethel Island, CA

Average snowfall days in January - Bethel Island, CA
  • Average snowfall days in January: 0 days

The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in January /
Average sunshine in January
Bethel Island, CA

Average daylight in January / Average sunshine in January - Bethel Island, 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: 6h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in January
Bethel Island, CA

Average sunshine days in January - Bethel Island, CA
  • Average sunshine days in January: 21.8 days

The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is March (17.7 days).

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Average UV index in January
Bethel Island, CA

Average UV index in January - Bethel Island, CA
  • Average UV index in January: 3

The months with the highest UV index are June, July and August (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
Bethel Island, CA

Average cloud cover in January - Bethel Island, CA
  • Average cloud cover in January: 34

The months with the most cloud cover are March and December (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).

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Average visibility in January
Bethel Island, CA

Average visibility in January - Bethel Island, 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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Bethel Island, California, USA

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