January weather forecastRodeo, CA
January
Weather in January
January, like December, is another mild winter month in Rodeo, California, with temperature in the range of an average high of 56.5°F (13.6°C) and an average low of 43°F (6.1°C).Temperature
Rodeo marks the onset of January with an average high-temperature of a still mild 56.5°F (13.6°C), subtly divergent from December's 55.4°F (13°C). Rodeo records an average low of 43°F (6.1°C) throughout the nights in January.Humidity
In January, the average relative humidity is 73%.Rainfall
In Rodeo, in January, during 7.7 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In Rodeo, California, during the entire year, the rain falls for 56.9 days and collects up to 4.88" (124mm) of precipitation.Ocean temperature
In January, the average ocean temperature in Rodeo is 53.1°F (11.7°C).Note: Diving into 53.1°F (11.7°C) is practical below 50°F (10°C), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Merely touching waters at 55.4°F (13°C) feels ice-cold.
Daylight
In January, the average length of the day is 9h and 53min.On the first day of January, sunrise is at 7:25 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 5:30 pm PST.
Sunshine
The average sunshine in January is 5.9h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In January, an average UV index of 3 transforms into the following instructions:
Be vigilant - Suggestions to stave off sun damage are provided. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Rodeo, CA
- Average high temperature in January: 56.5°F
The warmest months (with the highest average high temperature) are July and September (80.1°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in January: 43°F
The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is January (43°F).
Average pressure in January
Rodeo, CA
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Rodeo, CA
- Average wind speed in January: 4.9mph
The windiest month (with the highest average wind speed) is May (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).
Average humidity in January
Rodeo, CA
- Average humidity in January: 73%
The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are September and October (60%).
Average rainfall in January
Rodeo, CA
- Average rainfall in January: 0.83"
The wettest month (with the highest rainfall) is February (1.14").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in January
Rodeo, CA
- Average rainfall days in January: 7.7 days
The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is August (0.9 days).
Average sea temperature in January
Rodeo, CA
- Average sea temperature in January: 53°F
The best month for swimming (with the highest average sea temperature) is September (57°F).
The coldest month (with the lowest average sea temperature) is April (52.6°F).
Average daylight in January /
Average sunshine in January
Rodeo, CA
- Average daylight in January: 9h and 54min
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 36min).
- Average sunshine in January: 5h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in January
Rodeo, CA
- Average sunshine days in January: 21.8 days
The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is March (18.8 days).
Average UV index in January
Rodeo, CA
- Average UV index in January: 3
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in January
Rodeo, CA
- Average cloud cover in January: 35
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in January
Rodeo, 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).
