January weather forecastAltaville, CA
January
Weather in January
January is a moderate winter month in Altaville, California, with temperature in the range of an average high of 55.9°F (13.3°C) and an average low of 39.2°F (4°C).Temperature
January brings an average high-temperature of a refreshing 55.9°F (13.3°C), nearly identical to the preceding month. Altaville encounters a steady low-temperature average of 39.2°F (4°C) throughout the month of January.Humidity
The average relative humidity in January is 68%.Rainfall
In Altaville, during January, the rain falls for 8.5 days and regularly aggregates up to 3.03" (77mm) of precipitation. Throughout the year, there are 74.4 rainfall days, and 22.87" (581mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Altaville, in January, snow falls for 0.2 days, with typically accumulated 0.28" (7mm) of snow. In Altaville, during the entire year, snow falls for 2.2 days and aggregates up to 4.09" (104mm) of snow.Daylight
In January, the average length of the day is 9h and 53min.On the first day of the month, sunrise is at 7:18 am and sunset at 4:53 pm. On the last day of January, sunrise is at 7:07 am and sunset at 5:23 pm PST.
Sunshine
In Altaville, the average sunshine in January is 6.1h.UV index
In January, the average daily maximum UV index in Altaville is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 3 in January, converts into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Altaville, CA
- Average high temperature in January: 55.9°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (53.2°F).
- Average low temperature in January: 39.2°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is December (37.8°F).
Average pressure in January
Altaville, CA
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Altaville, CA
- Average wind speed in January: 4.8mph
The windiest month (with the highest average wind speed) is February (5.7mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in January
Altaville, CA
- Average humidity in January: 68%
The month with the highest relative humidity is March (71%).
The months with the lowest relative humidity are July and August (34%).
Average rainfall in January
Altaville, CA
- Average rainfall in January: 3.03"
The wettest month (with the highest rainfall) is March (4.76").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in January
Altaville, CA
- Average rainfall days in January: 8.5 days
The month with the highest number of rainy days is March (13 days).
The month with the least rainy days is August (1.2 days).
Average snowfall in January
Altaville, CA
- Average snowfall in January: 0.28"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Altaville, CA
- Average snowfall days in January: 0.2 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Altaville, CA
- Average daylight in January: 9h and 54min
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 36min).
- Average sunshine in January: 6h and 6min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in January
Altaville, CA
- Average sunshine days in January: 21.7 days
The month with the most sunshine days is July (29.1 days).
The month with the least sunshine days is March (16.8 days).
Average UV index in January
Altaville, CA
- Average UV index in January: 3
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in January
Altaville, CA
- Average cloud cover in January: 31
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in January
Altaville, 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).
