Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
January registers an average high-temperature of a moderate 55.9°F (13.3°C), slightly varied from December's 54.1°F (12.3°C). January nights are marked by an average temperature drop to a cold 40.8°F (4.9°C).Humidity
In Roseville, the average relative humidity in January is 72%.Rainfall
In Roseville, California, in January, during 9.8 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Roseville, during the entire year, the rain falls for 78.4 days and collects up to 19.09" (485mm) of precipitation.Snowfall
January through November are months without snowfall in Roseville, California.Daylight
In January, the average length of the day in Roseville is 9h and 49min.On the first day of the month, sunrise is at 7:23 am and sunset at 4:54 pm. On the last day of January, sunrise is at 7:11 am and sunset at 5:25 pm PST.
Sunshine
In January, the average sunshine in Roseville is 6h.UV index
The months with the lowest UV index in Roseville are January, February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 3 in January translates into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. The Sun's radiation is especially intense around midday; try to stay in shade during this period. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
What are the temperatures in Roseville in January?
What is the average humidity in January in Roseville?
How many days does it rain in January in Roseville?
When it does not snow in Roseville?
Does it snow in Roseville in January?
What is the average length of the day in January in Roseville?
When is the sunrise / sunset in January in Roseville?
How many hours of sunshine does Roseville have in January?
What is the month with the lowest UV index in Roseville?
What is the UV index reading in January in Roseville?
Average temperature in January
Roseville, CA
- Average high temperature in January: 55.9°F
The warmest month (with the highest average high temperature) is July (94.1°F).
The month with the lowest average high temperature is December (54.1°F).
- Average low temperature in January: 40.8°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is December (40.5°F).
Average pressure in January
Roseville, 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 (29.9"Hg).
Average wind speed in January
Roseville, CA
- Average wind speed in January: 4.7mph
The windiest month (with the highest average wind speed) is February (5.7mph).
The calmest month (with the lowest average wind speed) is September (4mph).
Average humidity in January
Roseville, CA
- Average humidity in January: 72%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (41%).
Average rainfall in January
Roseville, CA
- Average rainfall in January: 2.87"
The wettest month (with the highest rainfall) is March (3.58").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in January
Roseville, CA
- Average rainfall days in January: 9.8 days
The month with the highest number of rainy days is March (14.1 days).
The month with the least rainy days is July (1.1 days).
Average snowfall days in January
Roseville, CA
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is December (0.2 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Roseville, 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: 6h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in January
Roseville, CA
- Average sunshine days in January: 20.5 days
The month with the most sunshine days is July (29.3 days).
The month with the least sunshine days is March (15.8 days).
Average UV index in January
Roseville, CA
- Average UV index in January: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
Roseville, CA
- Average cloud cover in January: 34
The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in January
Roseville, 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).
Roseville, California, USA
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