January weather forecast and climate
Healdsburg, CA

Neat rows of plants in a farm with a view of a red farmhouse up the hill in Healdsburg, California
Neat rows of plants in a farm with a view of a red farmhouse up the hill in Healdsburg, California

Weather in January

January is a mild winter month in Healdsburg, California, with average temperature fluctuating between 41.2°F (5.1°C) and 57°F (13.9°C).

Temperature

In Healdsburg, the average high-temperature is relatively the same as in December - a mild 57°F (13.9°C). In Healdsburg, the average low-temperature is 41.2°F (5.1°C).

Humidity

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

Rainfall

In Healdsburg, during 10.7 rainfall days, 3.5" (89mm) of precipitation is typically accumulated. In Healdsburg, California, during the entire year, the rain falls for 81.2 days and collects up to 19.84" (504mm) of precipitation.

Snowfall

January, March through December are months without snowfall.

Daylight

The average length of the day in Healdsburg is 9.8h.

Sunshine

The average sunshine in January is 5.7h.

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 estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: In January, the average maximum UV index of 3 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in January in Healdsburg?

In January, in Healdsburg, California, the average high-temperature is 57°F (13.9°C), and the average low-temperature is 41.2°F (5.1°C).

What is the average humidity in January in Healdsburg?

In January, the average relative humidity is 74%.

How much does it rain in Healdsburg in January?

In January, in Healdsburg, the rain falls for 10.7 days. Throughout January, 3.5" (89mm) of precipitation is accumulated.

Does it snow in Healdsburg in January?

In Healdsburg, California, in January, it doesn't snow. In February, it regularly snows.

When it does not snow in Healdsburg?

In Healdsburg, California, snow does not fall in January, March through December.

How many hours of daylight does Healdsburg have in January?

In January, the average length of the day is 9.8h.

How long on average sun shines in January in Healdsburg?

In January, the average sunshine in Healdsburg, California, is 5.7h.

What is the month with the lowest UV index in Healdsburg?

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

What is the UV index reading in January in Healdsburg?

In January, the average daily maximum UV index in Healdsburg, California, is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in January
Healdsburg, CA

Average temperature in January - Healdsburg, CA
  • Average high temperature in January: 57°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in January: 41.2°F

The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).

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Average pressure in January
Healdsburg, CA

Average pressure in January - Healdsburg, CA
  • Average pressure in January: 30.13"

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in January
Healdsburg, CA

Average wind speed in January - Healdsburg, CA
  • Average wind speed in January: 4.7mph

The windiest months (with the highest average wind speed) are April and May (6.2mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).

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Average humidity in January
Healdsburg, CA

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

The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (57%).

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Average rainfall in January
Healdsburg, CA

Average rainfall in January - Healdsburg, CA
  • Average rainfall in January: 3.5"

The wettest month (with the highest rainfall) is February (4.33").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in January
Healdsburg, CA

Average rainfall days in January - Healdsburg, CA
  • Average rainfall days in January: 10.7 days

The month with the highest number of rainy days is March (14.2 days).
The month with the least rainy days is August (0.8 days).

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Average snowfall in January
Healdsburg, CA

Average snowfall in January - Healdsburg, CA
  • Average snowfall in January: 0"

The month with the highest snowfall is February (0.04").
Months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in January
Healdsburg, CA

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

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

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

Average daylight in January / Average sunshine in January - Healdsburg, CA
  • Average daylight in January: 9.8h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in January: 5.7h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.6h).

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Average sunshine days in January
Healdsburg, CA

Average sunshine days in January - Healdsburg, CA
  • Average sunshine days in January: 19.1 days

The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (14.8 days).

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Average UV index in January
Healdsburg, CA

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

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in January
Healdsburg, CA

Average cloud cover in January - Healdsburg, CA
  • Average cloud cover in January: 37

The month with the most cloud cover is March (Cloud cover 41).
Months with the least cloud cover are July and August (Cloud cover 6).

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Average visibility in January
Healdsburg, CA

Average visibility in January - Healdsburg, CA
  • Average visibility in January: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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