January weather forecast
Newark, CA

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Weather in January

January, like December, is another mild winter month in Newark, California, with an average temperature varying between 43.7°F (6.5°C) and 57.9°F (14.4°C).

Temperature

The transition into January shows a subtle variation to a still refreshing 57.9°F (14.4°C) from December's 56.5°F (13.6°C) in the average high-temperature. An average low-temperature of 43.7°F (6.5°C) is common during the nights of January.

Humidity

In January, the average relative humidity is 71%.

Rainfall

In Newark, during January, the rain falls for 5.5 days and regularly aggregates up to 0.35" (9mm) of precipitation. Throughout the year, there are 43.5 rainfall days, and 2.36" (60mm) of precipitation is accumulated.

Daylight

The average length of the day in January is 9h and 55min.
On the first day of the month, sunrise is at 7:22 am and sunset at 5:00 pm. On the last day of January, sunrise is at 7:12 am and sunset at 5:30 pm PST.

Sunshine

The average sunshine in January is 6.3h.

UV index

In January, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index, 4 in January, converts into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.

Frequently asked questions

What is the temperature in January?

January temperatures vary between a high-temperature of 57.9°F (14.4°C) and a low-temperature of 43.7°F (6.5°C).

What is the average humidity in January?

In Newark, the average relative humidity in January is 71%.

How much does it rain in Newark in January?

In Newark, during January, the rain falls for 5.5 days and regularly aggregates up to 0.35" (9mm) of precipitation.

How many hours of daylight does Newark have in January?

The average day length in January in Newark is 9h and 55min.

What time are sunrise and sunset in January in Newark?

On the first day of January, sunrise is at 7:22 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:30 pm PST.

How long on average sun shines in January?

In Newark, the average sunshine duration in January is 6.3h.

How high is the UV index in January in Newark?

In Newark, the average daily maximum UV index in January is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe 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
Newark, CA

Average temperature in January - Newark, CA
  • Average high temperature in January: 57.9°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is December (56.5°F).

  • Average low temperature in January: 43.7°F

The month with the highest average low temperature is August (56.8°F).
The coldest months (with the lowest average low temperature) are January, February and December (43.7°F).

Average pressure in January
Newark, CA

Average pressure in January - Newark, 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).

Average wind speed in January
Newark, CA

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

The windiest month (with the highest average wind speed) is May (6.2mph).
The calmest months (with the lowest average wind speed) are October and November (4.6mph).

Average humidity in January
Newark, CA

Average humidity in January - Newark, CA
  • Average humidity in January: 71%

The month with the highest relative humidity is March (72%).
The months with the lowest relative humidity are July and September (61%).

Average rainfall in January
Newark, CA

Average rainfall in January - Newark, CA
  • Average rainfall in January: 0.35"

The wettest months (with the highest rainfall) are February and March (0.47").
The driest months (with the least rainfall) are July and August (0").

Average rainfall days in January
Newark, CA

Average rainfall days in January - Newark, CA
  • Average rainfall days in January: 5.5 days

The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is July (0.3 days).

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

Average daylight in January / Average sunshine in January - Newark, 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 2min

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 54min).

Average sunshine days in January
Newark, CA

Average sunshine days in January - Newark, CA
  • Average sunshine days in January: 24.6 days

The month with the most sunshine days is July (30.5 days).
The month with the least sunshine days is February (21.3 days).

Average UV index in January
Newark, CA

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

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).

Average cloud cover in January
Newark, CA

Average cloud cover in January - Newark, CA
  • Average cloud cover in January: 31

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 6).

Average visibility in January
Newark, CA

Average visibility in January - Newark, 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).

Newark, California, USA

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