January weather forecastPotrero, CA
January
Weather in January
January, like December, in Potrero, California, is another comfortable winter month, with an average temperature fluctuating between 63.1°F (17.3°C) and 45.7°F (7.6°C).Temperature
Potrero's weather in January, with an average high-temperature of a still refreshing 63.1°F (17.3°C), subtly shifts from December's 61.2°F (16.2°C). During January, the average low-temperature in Potrero is a chilly 45.7°F (7.6°C).Humidity
In January, the average relative humidity in Potrero is 51%.Rainfall
In Potrero, in January, during 4.5 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. Throughout the year, in Potrero, there are 55.1 rainfall days, and 6.93" (176mm) of precipitation is accumulated.Snowfall
January, March through December are months without snowfall.Daylight
In Potrero, the average length of the day in January is 10h and 18min.On the first day of January, sunrise is at 6:48 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 6:41 am and sunset at 5:18 pm PST.
Sunshine
In January, the average sunshine in Potrero is 6.8h.UV index
The average daily maximum UV index in January in Potrero is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 4 in January leads to these recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Potrero, CA
- Average high temperature in January: 63.1°F
The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is December (61.2°F).
- Average low temperature in January: 45.7°F
The month with the highest average low temperature is August (66.2°F).
The coldest months (with the lowest average low temperature) are February and December (45.1°F).
Average pressure in January
Potrero, CA
- Average pressure in January: 30.08"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in January
Potrero, CA
- Average wind speed in January: 6.3mph
The windiest months (with the highest average wind speed) are February and December (6.4mph).
The calmest months (with the lowest average wind speed) are August and September (4.7mph).
Average humidity in January
Potrero, CA
- Average humidity in January: 51%
The month with the highest relative humidity is May (59%).
The month with the lowest relative humidity is November (48%).
Average rainfall in January
Potrero, CA
- Average rainfall in January: 0.83"
The wettest month (with the highest rainfall) is February (1.3").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in January
Potrero, CA
- Average rainfall days in January: 4.5 days
The month with the highest number of rainy days is July (7.3 days).
The month with the least rainy days is June (1.3 days).
Average snowfall in January
Potrero, CA
- Average snowfall in January: 0"
The month with the highest snowfall is February (0.12").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in January
Potrero, CA
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
Potrero, CA
- Average daylight in January: 10h and 18min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January: 6h and 48min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in January
Potrero, CA
- Average sunshine days in January: 25.7 days
The month with the most sunshine days is June (27.9 days).
The month with the least sunshine days is July (19.3 days).
Average UV index in January
Potrero, CA
- Average UV index in January: 4
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in January
Potrero, CA
- Average cloud cover in January: 21
The month with the most cloud cover is December (Cloud cover 25).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility in January
Potrero, 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).
