January weather forecast and climate
Oakley, CA

Weather in January

January is a mild winter month in Oakley, California, with temperature in the range of an average low of 41.5°F (5.3°C) and an average high of 56.1°F (13.4°C).

Temperature

In Oakley, the average high-temperature is relatively the same as in December - a mild 56.1°F (13.4°C). The average low-temperature, in January, is 41.5°F (5.3°C).

Humidity

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

Rainfall

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

Snowfall

In Oakley snow does not fall in January through November.

Daylight

The average length of the day in January is 9.9h.

Sunshine

In January, the average sunshine in Oakley is 6h.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for the average person.
Note: In January, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
[Resources]

FAQ

What is the most humid month in Oakley?

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

What is the average humidity in January in Oakley?

In Oakley, California, the average relative humidity in January is 74%.

How many days does it rain in January in Oakley?

In January, in Oakley, California, the rain falls for 8.6 days. Throughout January, 1.89" (48mm) of precipitation is accumulated.

When it does not snow in Oakley?

In Oakley snow does not fall in January through November.

Does it snow in Oakley in January?

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

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

The average length of the day in January is 9.9h.

How long on average sun shines in January in Oakley?

In Oakley, the average sunshine in January is 6h.

When is the lowest UV index in Oakley?

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

What is the UV index intensity in January in Oakley?

In Oakley, the average daily maximum UV index in January is 3. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in January
Oakley, CA

Average temperature in January - Oakley, 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).

[Resources]

Average pressure in January
Oakley, CA

Average pressure in January - Oakley, CA
  • Average pressure in January: 30.14"

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

[Resources]

Average wind speed in January
Oakley, CA

Average wind speed in January - Oakley, 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).

[Resources]

Average humidity in January
Oakley, CA

Average humidity in January - Oakley, 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%).

[Resources]

Average rainfall in January
Oakley, CA

Average rainfall in January - Oakley, 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").

[Resources]

Average rainfall days in January
Oakley, CA

Average rainfall days in January - Oakley, 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).

[Resources]

Average snowfall days in January
Oakley, CA

Average snowfall days in January - Oakley, CA
  • Average snowfall days in January: 0 days

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

[Resources]

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

Average daylight in January / Average sunshine in January - Oakley, CA
  • Average daylight in January: 9.9h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in January: 6h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.8h).

[Resources]

Average sunshine days in January
Oakley, CA

Average sunshine days in January - Oakley, 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).

[Resources]

Average UV index in January
Oakley, CA

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

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

[Resources]

Average cloud cover in January
Oakley, CA

Average cloud cover in January - Oakley, CA
  • Average cloud cover in January: 34

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).

[Resources]

Average visibility in January
Oakley, CA

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

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location