Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
A minor adjustment in Ross's average high-temperature is noted with the start of January, touching a still refreshing 56.1°F (13.4°C) from December's 55.4°F (13°C). Ross's temperature tends to fall to an average low of 45.5°F (7.5°C) during the nights of January.Humidity
The average relative humidity in January in Ross is 74%.Rainfall
In Ross, during January, the rain falls for 5.9 days and regularly aggregates up to 0.59" (15mm) of precipitation. In Ross, California, during the entire year, the rain falls for 48 days and collects up to 3.94" (100mm) of precipitation.Daylight
The average length of the day in January is 9h and 53min.On the first day of January, sunrise is at 7:26 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:31 pm PST.
Sunshine
In Ross, the average sunshine in January is 5.7h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Ross, California. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 3 in January translates into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Ross in January?
What is the average humidity in January in Ross?
How many days does it rain in January in Ross?
What is the average length of the day in January in Ross?
What time are sunrise and sunset in January in Ross?
How many hours of sunshine does Ross have in January?
When is the lowest UV index in Ross?
What is the UV index reading in January in Ross?
Average temperature in January
Ross, CA
- Average high temperature in January: 56.1°F
The warmest month (with the highest average high temperature) is September (72.3°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in January: 45.5°F
The month with the highest average low temperature is September (56.1°F).
The coldest month (with the lowest average low temperature) is December (45.3°F).
Average pressure in January
Ross, 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
Ross, CA
- Average wind speed in January: 6mph
The windiest month (with the highest average wind speed) is May (7.8mph).
The calmest months (with the lowest average wind speed) are October and November (5.5mph).
Average humidity in January
Ross, CA
- Average humidity in January: 74%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is October (68%).
Average rainfall in January
Ross, CA
- Average rainfall in January: 0.59"
The wettest month (with the highest rainfall) is February (0.87").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days in January
Ross, CA
- Average rainfall days in January: 5.9 days
The month with the highest number of rainy days is March (8.8 days).
The months with the least rainy days are June and August (1.2 days).
Average daylight in January /
Average sunshine in January
Ross, CA
- Average daylight in January: 9h and 5min
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 4min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in January
Ross, CA
- Average sunshine days in January: 24.2 days
The month with the most sunshine days is June (26.4 days).
The month with the least sunshine days is March (20.7 days).
Average UV index in January
Ross, CA
- Average UV index in January: 3
The months with the highest UV index are April, 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
Ross, CA
- Average cloud cover in January: 36
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 19).
Average visibility in January
Ross, 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).
Ross, California, USA
Weather forecast for your location
2. Allow the app to use your location