January weather forecast and climate
Cotati, CA

Weather in January

January, the same as December, in Cotati, California, is another mild winter month, with temperature in the range of an average low of 43.2°F (6.2°C) and an average high of 57°F (13.9°C).

Temperature

In January, the average high-temperature is essentially the same as in December - a still moderate 57°F (13.9°C). The average low-temperature, in Cotati, is 43.2°F (6.2°C).

Humidity

In Cotati, the average relative humidity is 75%.

Rainfall

In Cotati, it is raining for 5.6 days, with typically 0.51" (13mm) of accumulated precipitation. Throughout the year, in Cotati, there are 44.3 rainfall days, and 3.78" (96mm) of precipitation is accumulated.

Daylight

In Cotati, the average length of the day is 9.9h.

Sunshine

In Cotati, the average sunshine is 5.8h.

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 medium health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 3 in January transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. 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 Cotati?

The average high-temperature, in January, in Cotati, is 57°F (13.9°C), while the average low-temperature is 43.2°F (6.2°C).

What is the average humidity in January in Cotati?

In January, the average relative humidity in Cotati is 75%.

How many days does it rain in January in Cotati?

In Cotati, California, in January, during 5.6 rainfall days, 0.51" (13mm) of precipitation is typically accumulated.

What is the average length of the day in January in Cotati?

The average length of the day in January is 9.9h.

How long on average sun shines in January in Cotati?

In Cotati, the average sunshine in January is 5.8h.

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

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

What is the UV index reading in January in Cotati?

In Cotati, the average daily maximum UV index in January is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in January
Cotati, CA

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

The warmest months (with the highest average high temperature) are July and August (79.9°F).
The month with the lowest average high temperature is December (55.6°F).

  • Average low temperature in January: 43.2°F

Months with the highest average low temperature are August and September (55°F).
The coldest month (with the lowest average low temperature) is December (42.4°F).

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Average pressure in January
Cotati, CA

Average pressure in January - Cotati, 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
Cotati, CA

Average wind speed in January - Cotati, CA
  • Average wind speed in January: 5.1mph

The windiest month (with the highest average wind speed) is May (6.8mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).

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Average humidity in January
Cotati, CA

Average humidity in January - Cotati, CA
  • Average humidity in January: 75%

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (62%).

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Average rainfall in January
Cotati, CA

Average rainfall in January - Cotati, CA
  • Average rainfall in January: 0.51"

The wettest month (with the highest rainfall) is February (0.91").
The driest months (with the least rainfall) are June, July, August and September (0.04").

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Average rainfall days in January
Cotati, CA

Average rainfall days in January - Cotati, CA
  • Average rainfall days in January: 5.6 days

The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (0.5 days).

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

Average daylight in January / Average sunshine in January - Cotati, CA
  • Average daylight in January: 9.9h

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: 5.8h

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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Average sunshine days in January
Cotati, CA

Average sunshine days in January - Cotati, CA
  • Average sunshine days in January: 23.8 days

The month with the most sunshine days is June (27.7 days).
The month with the least sunshine days is March (20.8 days).

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Average UV index in January
Cotati, CA

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

The month with the highest UV index is June (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
Cotati, CA

Average cloud cover in January - Cotati, CA
  • Average cloud cover in January: 36

The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in January
Cotati, CA

Average visibility in January - Cotati, 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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