January weather forecast
Asti, CA

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Weather in January

January is a refreshing winter month in Asti, California, with an average temperature varying between 56.5°F (13.6°C) and 39.9°F (4.4°C).

Temperature

January's weather records an average high-temperature of a refreshing 56.5°F (13.6°C), showing little deviation from December. During the nights in January, the temperature averages to an icy 39.9°F (4.4°C).

Humidity

The average relative humidity in January in Asti is 74%.

Rainfall

In Asti, in January, during 11.2 rainfall days, 3.62" (92mm) of precipitation is typically accumulated. Throughout the year, there are 82.4 rainfall days, and 20.75" (527mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in January is 9h and 49min.
On the first day of January, sunrise is at 7:30 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:31 pm PST.

Sunshine

In Asti, the average sunshine in January is 5.6h.

UV index

The average daily maximum UV index in January is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 3 during January translates into these guidelines:
Undertake protective steps - Preventing sun damage is advised. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in January?

An average high-temperature, in January, in Asti, is 56.5°F (13.6°C) and the average low-temperature is 39.9°F (4.4°C).

What is the average humidity in January?

The average relative humidity in January is 74%.

How much does it rain in January?

In January, the rain falls for 11.2 days. Throughout January, 3.62" (92mm) of precipitation is accumulated.

When it does not snow?

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

Does it snow in January?

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

How many hours of daylight does Asti have in January?

In Asti, the average day length in January is 9h and 49min.

When are sunrise and sunset in January?

In January, on the first day of the month, sunrise is at 7:30 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:31 pm PST.

How long on average sun shines in January?

In January, the average sunshine duration is 5.6h.

What is the UV index intensity in January?

In January, the average daily maximum UV index in Asti, California, is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to 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
Asti, CA

Average temperature in January - Asti, CA
  • Average high temperature in January: 56.5°F

The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is December (54.9°F).

  • Average low temperature in January: 39.9°F

The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (38.5°F).

Average pressure in January
Asti, CA

Average pressure in January - Asti, CA
  • Average pressure in January: 30.13"Hg

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

Average wind speed in January
Asti, CA

Average wind speed in January - Asti, CA
  • Average wind speed in January: 4.9mph

The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).

Average humidity in January
Asti, CA

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

The month with the highest relative humidity is March (77%).
The months with the lowest relative humidity are July and September (57%).

Average rainfall in January
Asti, CA

Average rainfall in January - Asti, CA
  • Average rainfall in January: 3.62"

The wettest month (with the highest rainfall) is February (4.25").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in January
Asti, CA

Average rainfall days in January - Asti, CA
  • Average rainfall days in January: 11.2 days

The month with the highest number of rainy days is March (14.6 days).
The months with the least rainy days are July and August (1.2 days).

Average snowfall in January
Asti, CA

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

The month with the highest snowfall is February (0.16").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in January
Asti, CA

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

The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

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

Average daylight in January / Average sunshine in January - Asti, CA
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in January: 5h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in January
Asti, CA

Average sunshine days in January - Asti, CA
  • Average sunshine days in January: 18.9 days

The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (15.2 days).

Average UV index in January
Asti, CA

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is November (UV index 2).

Average cloud cover in January
Asti, CA

Average cloud cover in January - Asti, CA
  • Average cloud cover in January: 39

The month with the most cloud cover is March (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 6).

Average visibility in January
Asti, CA

Average visibility in January - Asti, 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).

Asti, California, USA

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