January weather forecast
Tracy, CA

Weather in January

January in Tracy, California, is a mild winter month, with temperature in the range of an average low of 40.1°F (4.5°C) and an average high of 55.8°F (13.2°C).

Temperature

In Tracy, the average high-temperature in January is practically the same as in December - a moderate 55.8°F (13.2°C). In Tracy, the average low-temperature is 40.1°F (4.5°C).

Humidity

The most humid month is January, with an average relative humidity of 74%.

Rainfall

In Tracy, during January, the rain falls for 7.3 days and regularly aggregates up to 0.79" (20mm) of precipitation. Throughout the year, in Tracy, California, there are 60.6 rainfall days, and 5.71" (145mm) of precipitation is accumulated.

Snowfall

January through November are months without snowfall.

Daylight

The average length of the day in January in Tracy is 9h and 55min.
On the first day of January, sunrise is at 7:20 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 5:28 pm PST.

Sunshine

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

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 of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The average daily UV index of 3 in January transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
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FAQ

What is the temperature in January in Tracy?

In January, the average high-temperature is 55.8°F (13.2°C), and the average low-temperature is 40.1°F (4.5°C).

What is the most humid month in Tracy?

January is the most humid month in Tracy, California, with an average relative humidity of 74%.

What is the average humidity in January in Tracy?

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

How much does it rain in Tracy in January?

In Tracy, California, in January, it is raining for 7.3 days, with typically 0.79" (20mm) of accumulated precipitation.

When it does not snow in Tracy?

January through November are months without snowfall in Tracy, California.

Does it snow in Tracy in January?

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

How many hours of daylight does Tracy have in January?

The average day length in January in Tracy, California, is 9h and 55min.

When is the sunrise / sunset in January in Tracy?

In January, on the first day of the month, sunrise is at 7:20 am and sunset at 4:57 pm. On the last day of the month, in Tracy, California, sunrise is at 7:10 am and sunset at 5:28 pm PST.

How many hours of sunshine does Tracy have in January?

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

When is the lowest UV index in Tracy?

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

How high is the UV index in January in Tracy?

The average daily maximum UV index in January is 3. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Tracy, CA

Average temperature in January - Tracy, CA
  • Average high temperature in January: 55.8°F

The warmest month (with the highest average high temperature) is July (92.5°F).
The month with the lowest average high temperature is December (54.1°F).

  • Average low temperature in January: 40.1°F

The month with the highest average low temperature is August (58.6°F).
The coldest months (with the lowest average low temperature) are January and December (40.1°F).

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Average pressure in January
Tracy, CA

Average pressure in January - Tracy, CA
  • Average pressure in January: 30.14"Hg

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

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Average wind speed in January
Tracy, CA

Average wind speed in January - Tracy, CA
  • Average wind speed in January: 4.6mph

The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).

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Average humidity in January
Tracy, CA

Average humidity in January - Tracy, CA
  • Average humidity in January: 74%

The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is July (45%).

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Average rainfall in January
Tracy, CA

Average rainfall in January - Tracy, CA
  • Average rainfall in January: 0.79"

The wettest month (with the highest rainfall) is March (1.06").
The driest months (with the least rainfall) are June and August (0.08").

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Average rainfall days in January
Tracy, CA

Average rainfall days in January - Tracy, CA
  • Average rainfall days in January: 7.3 days

The month with the highest number of rainy days is March (10.6 days).
The month with the least rainy days is August (1.2 days).

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Average snowfall days in January
Tracy, CA

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

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

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

Average daylight in January / Average sunshine in January - Tracy, CA
  • Average daylight in January: 9h and 55min

The month with the longest days is June (Average daylight: 14h and 44min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in January: 6h and 6min

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 48min).

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Average sunshine days in January
Tracy, CA

Average sunshine days in January - Tracy, CA
  • Average sunshine days in January: 22.6 days

The month with the most sunshine days is August (28.6 days).
The month with the least sunshine days is March (18.4 days).

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Average UV index in January
Tracy, CA

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

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in January
Tracy, CA

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

The month with the most cloud cover is March (Cloud cover 36).
The months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in January
Tracy, CA

Average visibility in January - Tracy, 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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