January weather forecastPiedmont, CA
January
Weather in January
January, like December, is a moderate winter month in Piedmont, California, with an average temperature fluctuating between 44.2°F (6.8°C) and 56.3°F (13.5°C).Temperature
Piedmont's shift into January sets the average high-temperature at a still moderate 56.3°F (13.5°C), a figure that deviates only slightly from December's 55.4°F (13°C). An average low-temperature of 44.2°F (6.8°C) is observed during the January nights.Humidity
In January, the average relative humidity is 73%.Rainfall
In Piedmont, in January, it is raining for 7.6 days, with typically 0.94" (24mm) of accumulated precipitation. In Piedmont, during the entire year, the rain falls for 55.6 days and collects up to 5.24" (133mm) of precipitation.Daylight
The average length of the day in January is 9h and 54min.On the first day of the month, sunrise is at 7:24 am and sunset at 5:00 pm. On the last day of January, sunrise is at 7:13 am and sunset at 5:30 pm PST.
Sunshine
The average sunshine in January is 6.1h.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 of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In January, an average UV index of 3 transforms into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Piedmont, CA
- Average high temperature in January: 56.3°F
The warmest month (with the highest average high temperature) is September (76.6°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in January: 44.2°F
The month with the highest average low temperature is September (56.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in January
Piedmont, 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
Piedmont, CA
- Average wind speed in January: 5.3mph
The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (5mph).
Average humidity in January
Piedmont, CA
- Average humidity in January: 73%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (64%).
Average rainfall in January
Piedmont, CA
- Average rainfall in January: 0.94"
The wettest month (with the highest rainfall) is February (1.1").
The driest months (with the least rainfall) are June, July, August and September (0.08").
Average rainfall days in January
Piedmont, CA
- Average rainfall days in January: 7.6 days
The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (1.5 days).
Average daylight in January /
Average sunshine in January
Piedmont, 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: 6h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in January
Piedmont, CA
- Average sunshine days in January: 22.3 days
The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (20.5 days).
Average UV index in January
Piedmont, CA
- Average UV index in January: 3
The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
Piedmont, CA
- Average cloud cover in January: 33
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in January
Piedmont, 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).
