Normal weather for Sonoma in January
It's cool to moderate in January in Sonoma with an average temperature of 15°C. Temperatures this month range from a low of 12°C to a high of 17°C. At night, you can expect temperatures between 0°C and 8°C.
In January, there is an average of 181 mm of precipitation, spread over 17 days. The wind speed is around 3 Bft, mostly coming from the South.
Sonoma in January |
New York | ||
|---|---|---|---|
 Average Temperature |
15°C | 5°C | |
 High Temp |
17°C | 11°C | |
| Low Temp |
12°C | 1°C | |
 Total Precipitation |
181 mm | 97 mm | |
| Rainy Days |
17 days | 12 days | |
Start of January
The month of January starts in Sonoma with cool temps, averaging around 14°C during the day and nights around 5°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
With the temperature difference between day and night, it’s smart to wear layers. During the day, choose a light jacket, sweater or hoodie, and long pants. For the evening and morning, we recommend a thick jacket, sweater, and long pants.
Mid January
By mid-January, daytime temps rise to around 16°C, with nights around 7°C. There’s a high chance of precipitation during this time.
Since it cools down at night, it’s a good idea to wear layers. During the day, choose a light jacket, sweater or hoodie, and long pants. In the evening and morning, go for a warm jacket, sweater or hoodie, and long pants.
End of January
By the end of January, the average daytime temperature in Sonoma is around 16°C, while nighttime temps are about 6°C. A shower might pop up, but overall, the weather will be dry and sunny.
Because temperatures drop in the evening, wearing layers is recommended. During the day, choose a light jacket, sweater or hoodie, and long pants. For the evening and morning, we recommend a thick jacket, sweater, and long pants.
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UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is January a good time to visit Sonoma?
Looking for sun and warm weather? January isn’t a good month to be in Sonoma. The temperatures are too low for a warm stay this month.
Temperature records for Sonoma in January
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Daily Temperature in January in Sonoma
This chart shows the average daily high and low temperatures in January for Sonoma, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in January in Sonoma
The chart below shows the average daily precipitation in January for Sonoma, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for January, you can expect about 17 days of precipitation in Sonoma.
Daily UV Index in January in Sonoma
This chart shows the average daily UV index in January in Sonoma, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in January in Sonoma Over the Years
This chart shows the average temperature in January in Sonoma, measured in degrees Celsius, over the past few years.
Total Precipitation in January in Sonoma Over the Years
This chart shows the average precipitation in January in Sonoma, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily Climate in January for Sonoma
Click on any day in January to get detailed info about the usual weather on that day in Sonoma. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in January in Sonoma
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Average Weather in Sonoma by Month
Click on a month below to see detailed weather info for Sonoma. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
