January weather forecastGranite Bay, CA
January
Weather in January
January in Granite Bay, California, is a refreshing winter month, with an average temperature varying between 55.9°F (13.3°C) and 40.1°F (4.5°C).Temperature
The transition from December to January sees average high-temperatures adjusting to a mild 55.9°F (13.3°C), from a not significantly different 54°F (12.2°C). Granite Bay encounters an average low-temperature of 40.1°F (4.5°C) during January nights.Humidity
The average relative humidity in January is 71%.Rainfall
In Granite Bay, in January, during 9.9 rainfall days, 3.35" (85mm) of precipitation is typically accumulated. Throughout the year, in Granite Bay, California, there are 81.2 rainfall days, and 22.64" (575mm) of precipitation is accumulated.Snowfall
In Granite Bay, snow does not fall in January, March through November.Daylight
The average length of the day in January in Granite Bay is 9h and 49min.On the first day of the month, sunrise is at 7:22 am and sunset at 4:53 pm. On the last day of January, in Granite Bay, sunrise is at 7:11 am and sunset at 5:24 pm PST.
Sunshine
In January, the average sunshine in Granite Bay, California, is 6h.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 reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: A typical high UV index of 3 in January suggests the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Granite Bay, CA
- Average high temperature in January: 55.9°F
The warmest month (with the highest average high temperature) is July (93°F).
The month with the lowest average high temperature is December (54°F).
- Average low temperature in January: 40.1°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is December (39.6°F).
Average pressure in January
Granite Bay, 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
Granite Bay, CA
- Average wind speed in January: 4.7mph
The windiest month (with the highest average wind speed) is February (5.5mph).
The calmest months (with the lowest average wind speed) are August and September (4mph).
Average humidity in January
Granite Bay, CA
- Average humidity in January: 71%
The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (40%).
Average rainfall in January
Granite Bay, CA
- Average rainfall in January: 3.35"
The wettest month (with the highest rainfall) is March (4.33").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in January
Granite Bay, CA
- Average rainfall days in January: 9.9 days
The month with the highest number of rainy days is March (14.6 days).
The month with the least rainy days is July (1 days).
Average snowfall in January
Granite Bay, CA
- Average snowfall in January: 0"
The months with the highest snowfall are February and December (0.04").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in January
Granite Bay, 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, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Granite Bay, CA
- Average daylight in January: 9h and 48min
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
Granite Bay, CA
- Average sunshine days in January: 20.1 days
The month with the most sunshine days is July (29.2 days).
The month with the least sunshine days is March (15.7 days).
Average UV index in January
Granite Bay, 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
Granite Bay, CA
- Average cloud cover in January: 33
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
Granite Bay, 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).
