January weather forecast
Arnold, CA

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Weather in January

January in Arnold, California, is a cool winter month, with an average temperature ranging between max 50.7°F (10.4°C) and min 34°F (1.1°C).

Temperature

Arnold's January average high-temperature settles at a fresh 50.7°F (10.4°C), showing a near match with the preceding month. During the month of January, the temperature generally drops to a low average of 34°F (1.1°C).

Humidity

In Arnold, the average relative humidity in January is 68%.

Rainfall

In Arnold, in January, during 7.8 rainfall days, 4.33" (110mm) of precipitation is typically accumulated. Throughout the year, in Arnold, California, there are 69 rainfall days, and 29.09" (739mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In January, it is snowing for 4.8 days. Throughout January, 11.69" (297mm) of snow is accumulated. In Arnold, during the entire year, snow falls for 31 days and aggregates up to 79.92" (2030mm) of snow.

Daylight

In January, the average length of the day is 9h and 52min.
On the first day of the month, sunrise is at 7:18 am and sunset at 4:51 pm. On the last day of January, sunrise is at 7:07 am and sunset at 5:22 pm PST.

Sunshine

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

UV index

In Arnold, the average daily maximum UV index in January is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.
Note: In January, an average UV index of 3 transforms into the following instructions:
Undertake protective steps - Preventing sun damage is advised. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.

Frequently asked questions

What are the temperatures in Arnold in January?

An average high-temperature, in January, in Arnold, is 50.7°F (10.4°C) and the average low-temperature is 34°F (1.1°C).

What is the average humidity in January in Arnold?

In Arnold, the average relative humidity in January is 68%.

How much does it rain in Arnold in January?

In Arnold, in January, it is raining for 7.8 days, with typically 4.33" (110mm) of accumulated precipitation.

How many days does it snow in January in Arnold?

In Arnold, California, during January, snow falls for 4.8 days and regularly aggregates up to 11.69" (297mm) of snow.

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

The average day length in January in Arnold, California, is 9h and 52min.

When are sunrise and sunset in January in Arnold?

In January, on the first day of the month, sunrise is at 7:18 am and sunset at 4:51 pm. On the last day of the month, in Arnold, sunrise is at 7:07 am and sunset at 5:22 pm PST.

How many hours of sunshine does Arnold have in January?

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

How high is the UV index in January in Arnold?

In January, the average daily maximum UV index in Arnold is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Arnold, CA

Average temperature in January - Arnold, CA
  • Average high temperature in January: 50.7°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (48°F).

  • Average low temperature in January: 34°F

The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is December (32°F).

Average pressure in January
Arnold, CA

Average pressure in January - Arnold, CA
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in January
Arnold, CA

Average wind speed in January - Arnold, CA
  • Average wind speed in January: 5.5mph

The windiest month (with the highest average wind speed) is February (6.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in January
Arnold, CA

Average humidity in January - Arnold, CA
  • Average humidity in January: 68%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (36%).

Average rainfall in January
Arnold, CA

Average rainfall in January - Arnold, CA
  • Average rainfall in January: 4.33"

The wettest month (with the highest rainfall) is March (5.98").
The driest months (with the least rainfall) are July and August (0.08").

Average rainfall days in January
Arnold, CA

Average rainfall days in January - Arnold, CA
  • Average rainfall days in January: 7.8 days

The month with the highest number of rainy days is March (11.3 days).
The month with the least rainy days is August (1.6 days).

Average snowfall in January
Arnold, CA

Average snowfall in January - Arnold, CA
  • Average snowfall in January: 11.69"

The month with the highest snowfall is March (21.34").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Arnold, CA

Average snowfall days in January - Arnold, CA
  • Average snowfall days in January: 4.8 days

The month with the highest number of snowfall days is March (7.2 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in January / Average sunshine in January - Arnold, 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 1min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

Average sunshine days in January
Arnold, CA

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

The month with the most sunshine days is August (27.9 days).
The month with the least sunshine days is March (14.5 days).

Average UV index in January
Arnold, CA

Average UV index in January - Arnold, 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 February, November and December (UV index 2).

Average cloud cover in January
Arnold, CA

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

The month with the most cloud cover is March (Cloud cover 37).
The months with the least cloud cover are July and August (Cloud cover 5).

Average visibility in January
Arnold, CA

Average visibility in January - Arnold, 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).

Arnold, California, USA

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