January weather forecastDaly City, CA
January
Weather in January
In Daly City, the yearly weather cycle opens with January. A recurring characteristic of this month is the dense, heavy fog that rolls in, causing a certain subdued gloom over the city. The visibility, with an average of 6 miles, is often marred by the coastal mist. Coupled with cold winds rushing at 6.8mph (10.9km/h), this period tends to feel chilling despite temperatures ranging from 47.8°F (8.8°C) to 56.1°F (13.4°C). The month’s tumultuous climate is made notable by sporadic drizzling, which starts at about 10.3 days and accumulates to 2.28" (58mm) of rainfall.Temperature
January is marked by an average high-temperature of a still mild 56.1°F (13.4°C), almost identical to the preceding month. January nights register a minor temperature decline, steadying at a frosty 47.8°F (8.8°C).Humidity
In Daly City, the average relative humidity in January is 74%.Rainfall
In Daly City, during January, the rain falls for 10.3 days and regularly aggregates up to 2.28" (58mm) of precipitation. Throughout the year, there are 82.2 rainfall days, and 13.62" (346mm) of precipitation is accumulated.Daylight
In Daly City, the average length of the day in January is 9h and 55min.On the first day of the month, sunrise is at 7:24 am and sunset at 5:01 pm. On the last day of January, sunrise is at 7:14 am and sunset at 5:32 pm PST.
Sunshine
The average sunshine in January is 5.9h.UV index
In January, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: In January, the average maximum UV index of 4 translates into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Daly City, CA
- Average high temperature in January: 56.1°F
The warmest month (with the highest average high temperature) is September (69.1°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in January: 47.8°F
The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is February (47.7°F).
Average pressure in January
Daly City, 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 August and September (29.92"Hg).
Average wind speed in January
Daly City, CA
- Average wind speed in January: 6.8mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is September (6.3mph).
Average humidity in January
Daly City, CA
- Average humidity in January: 74%
The month with the highest relative humidity is August (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Daly City, CA
- Average rainfall in January: 2.28"
The wettest month (with the highest rainfall) is February (2.8").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in January
Daly City, CA
- Average rainfall days in January: 10.3 days
The month with the highest number of rainy days is March (12.8 days).
The month with the least rainy days is July (2.7 days).
Average daylight in January /
Average sunshine in January
Daly City, CA
- Average daylight in January: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 5h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in January
Daly City, CA
- Average sunshine days in January: 20 days
The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is March (16.6 days).
Average UV index in January
Daly City, CA
- Average UV index in January: 4
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in January
Daly City, 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 September (Cloud cover 18).
Average visibility in January
Daly City, 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).
