January weather forecast
Barstow, CA

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The vast desert region of Mojave, with the modern section of the Barstow residential community in California
The vast desert region of Mojave, with the modern section of the Barstow residential community in California

Weather in January

January in Barstow, California, is a mild winter month, with an average temperature varying between 55.9°F (13.3°C) and 39.7°F (4.3°C).

Temperature

Barstow's transition from December to January introduces an average high-temperature of a refreshing 55.9°F (13.3°C), marking an insignificant variation from the 54.3°F (12.4°C). During the month of January, Barstow's nighttime temperature lowers to an average of 39.7°F (4.3°C).

Humidity

January and December, with an average relative humidity of 48%, are the most humid months in Barstow.

Rainfall

In Barstow, California, in January, it is raining for 4.6 days, with typically 0.43" (11mm) of accumulated precipitation. In Barstow, California, during the entire year, the rain falls for 36.5 days and collects up to 3.11" (79mm) of precipitation.

Snowfall

January and November are months with snowfall. January is the first month it typically snows. Throughout January, in the average 0.4 snowfall days, it receives 0.08" (2mm) of snow. In Barstow, during the entire year, snow falls for 1.3 days and aggregates up to 0.47" (12mm) of snow.

Daylight

In Barstow, California, the average length of the day in January is 10h and 8min.
On the first day of January in Barstow, sunrise is at 6:55 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 5:15 pm PST.

Sunshine

The month with the least sunshine in Barstow is January, with an average of 7.1h of sunshine.

UV index

The average daily maximum UV index in January in Barstow is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 4 during January leads to these instructions:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The solar radiation around mid-day is intense; avoid the Sun and stay safe. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
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Frequently asked questions

What are the temperatures in Barstow in January?

Barstow in January has an average high-temperature of 55.9°F (13.3°C) and an average low-temperature of 39.7°F (4.3°C).

What are the most humid months in Barstow?

January and December, with an average relative humidity of 48%, are most humid months.

What is the average humidity in January in Barstow?

In Barstow, California, the average relative humidity in January is 48%.

How much does it rain in Barstow in January?

In Barstow, in January, it is raining for 4.6 days, with typically 0.43" (11mm) of accumulated precipitation.

When does it start snowing in Barstow?

January is the first month it typically snows. Throughout January, in the average 0.4 snowfall days, it receives 0.08" (2mm) of snow.

How many hours of daylight does Barstow have in January?

The average day length in January in Barstow is 10h and 8min.

When is the sunrise / sunset in January in Barstow?

In January, on the first day of the month, sunrise is at 6:55 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 5:15 pm PST.

What is the month with the least sunshine in Barstow?

The month with the least sunshine is January, with an average of 7.1h of sunshine.

How long on average sun shines in January in Barstow?

In January, the average sunshine duration is 7.1h.

How high is the UV index in January in Barstow?

In January, the average daily maximum UV index in Barstow, California, is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Barstow, CA

Average temperature in January - Barstow, CA
  • Average high temperature in January: 55.9°F

The warmest month (with the highest average high temperature) is July (96.4°F).
The month with the lowest average high temperature is December (54.3°F).

  • Average low temperature in January: 39.7°F

The month with the highest average low temperature is August (72.9°F).
The coldest month (with the lowest average low temperature) is December (38.7°F).

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Average pressure in January
Barstow, CA

Average pressure in January - Barstow, CA
  • Average pressure in January: 30.11"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.81"Hg).

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Average wind speed in January
Barstow, CA

Average wind speed in January - Barstow, CA
  • Average wind speed in January: 6.3mph

The windiest month (with the highest average wind speed) is May (12.6mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).

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Average humidity in January
Barstow, CA

Average humidity in January - Barstow, CA
  • Average humidity in January: 48%

The months with the highest relative humidity are January and December (48%).
The month with the lowest relative humidity is August (23%).

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Average rainfall in January
Barstow, CA

Average rainfall in January - Barstow, CA
  • Average rainfall in January: 0.43"

The wettest month (with the highest rainfall) is December (0.55").
The driest month (with the least rainfall) is June (0").

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Average rainfall days in January
Barstow, CA

Average rainfall days in January - Barstow, CA
  • Average rainfall days in January: 4.6 days

The month with the highest number of rainy days is December (5.6 days).
The month with the least rainy days is June (0.2 days).

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Average snowfall in January
Barstow, CA

Average snowfall in January - Barstow, CA
  • Average snowfall in January: 0.08"

The month with the highest snowfall is November (0.39").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and December (0").

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Average snowfall days in January
Barstow, CA

Average snowfall days in January - Barstow, CA
  • Average snowfall days in January: 0.4 days

The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in January / Average sunshine in January - Barstow, CA
  • Average daylight in January: 10h and 1min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in January: 7h and 1min

The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 7h and 6min).

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Average sunshine days in January
Barstow, CA

Average sunshine days in January - Barstow, CA
  • Average sunshine days in January: 25.2 days

The month with the most sunshine days is June (29.8 days).
The month with the least sunshine days is February (22.8 days).

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Average UV index in January
Barstow, CA

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

The month with the highest UV index is July (UV index 8).
The months with the lowest UV index are November and December (UV index 3).

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Average cloud cover in January
Barstow, CA

Average cloud cover in January - Barstow, CA
  • Average cloud cover in January: 18

The month with the most cloud cover is December (Cloud cover 19).
The months with the least cloud cover are June, August and September (Cloud cover 5).

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Average visibility in January
Barstow, CA

Average visibility in January - Barstow, 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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Barstow, California, USA

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