January weather forecast
Mountain View, CA

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A street in Mountain View Town, California, with neon-lit building, trees, and parked cars
A street in Mountain View Town, California, with neon-lit building, trees, and parked cars

Weather in January

January, like December, is a moderate winter month in Mountain View, California, with an average temperature ranging between max 57.7°F (14.3°C) and min 44.2°F (6.8°C).

Temperature

Mountain View sees the arrival of January with an average high-temperature of a still refreshing 57.7°F (14.3°C), indicating a subtle variation from December. Mountain View reports a consistent average low-temperature of 44.2°F (6.8°C) throughout January nights.

Humidity

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

Rainfall

In Mountain View, in January, it is raining for 6.6 days, with typically 0.59" (15mm) of accumulated precipitation. In Mountain View, during the entire year, the rain falls for 53.1 days and collects up to 4.41" (112mm) of precipitation.

Daylight

The average length of the day in January is 9h and 56min.
On the first day of January in Mountain View, California, sunrise is at 7:22 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:31 pm PST.

Sunshine

In Mountain View, the average sunshine in January is 6.3h.

UV index

In January, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: In January, a daily maximum UV index of 4 leads to the following instructions:
Ensure safety - Recommendations to avert sunburn are presented. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

What is the usual temperature for Mountain View in January?

The high-temperature during January is 57.7°F (14.3°C) and the low-temperature is 44.2°F (6.8°C).

What is the average humidity in January in Mountain View?

In January, the average relative humidity in Mountain View, California, is 71%.

How many days does it rain in January in Mountain View?

In January, in Mountain View, the rain falls for 6.6 days. Throughout January, 0.59" (15mm) of precipitation is accumulated.

What is the average length of the day in January in Mountain View?

In January, the average day length in Mountain View is 9h and 56min.

When is the sunrise / sunset in January in Mountain View?

On the first day of January in Mountain View, California, sunrise is at 7:22 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:31 pm PST.

How many hours of sunshine does Mountain View have in January?

The average sunshine duration in January in Mountain View, California, is 6.3h.

What is the UV index intensity in January in Mountain View?

The average daily maximum UV index in January in Mountain View, California, is 4. A UV Index reading of 3 to 5 represents a moderate health threat 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
Mountain View, CA

Average temperature in January - Mountain View, CA
  • Average high temperature in January: 57.7°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (56.5°F).

  • Average low temperature in January: 44.2°F

The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is December (44.1°F).

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Average pressure in January
Mountain View, CA

Average pressure in January - Mountain View, 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 and September (29.92"Hg).

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Average wind speed in January
Mountain View, CA

Average wind speed in January - Mountain View, CA
  • Average wind speed in January: 4.9mph

The windiest months (with the highest average wind speed) are April and May (6.2mph).
The calmest months (with the lowest average wind speed) are August, September, October and November (4.7mph).

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Average humidity in January
Mountain View, CA

Average humidity in January - Mountain View, CA
  • Average humidity in January: 71%

The month with the highest relative humidity is March (73%).
The months with the lowest relative humidity are July, September and October (63%).

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Average rainfall in January
Mountain View, CA

Average rainfall in January - Mountain View, CA
  • Average rainfall in January: 0.59"

The wettest months (with the highest rainfall) are February, March and December (0.83").
The driest months (with the least rainfall) are June, July and August (0.04").

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Average rainfall days in January
Mountain View, CA

Average rainfall days in January - Mountain View, CA
  • Average rainfall days in January: 6.6 days

The month with the highest number of rainy days is March (10 days).
The month with the least rainy days is August (0.4 days).

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Average daylight in January /
Average sunshine in January
Mountain View, CA

Average daylight in January / Average sunshine in January - Mountain View, 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 months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

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Average sunshine days in January
Mountain View, CA

Average sunshine days in January - Mountain View, CA
  • Average sunshine days in January: 23.4 days

The months with the most sunshine days are July and August (29.8 days).
The month with the least sunshine days is March (19.4 days).

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Average UV index in January
Mountain View, CA

Average UV index in January - Mountain View, CA
  • Average UV index in January: 4

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

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Average cloud cover in January
Mountain View, CA

Average cloud cover in January - Mountain View, CA
  • Average cloud cover in January: 30

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 7).

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Average visibility in January
Mountain View, CA

Average visibility in January - Mountain View, 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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Mountain View, California, USA

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