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 snowfall in January
- Average snowfall 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
In January, Rio Dell notes an average high-temperature of a still cool 54.3°F (12.4°C), hardly different from the preceding month. January witnesses an average low-temperature hovering around a cold 41.4°F (5.2°C).Humidity
In January, the average relative humidity in Rio Dell is 80%.Rainfall
In Rio Dell, in January, during 13.8 rainfall days, 4.41" (112mm) of precipitation is typically accumulated. In Rio Dell, during the entire year, the rain falls for 110.9 days and collects up to 28.27" (718mm) of precipitation.Snowfall
January, March through December are months without snowfall in Rio Dell.Daylight
The average length of the day in January is 9h and 40min.On the first day of the month, sunrise is at 7:39 am and sunset at 5:00 pm. On the last day of January, in Rio Dell, sunrise is at 7:26 am and sunset at 5:32 pm PST.
Sunshine
In January, the average sunshine is 5.2h.UV index
January through March, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Rio Dell. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 3 during January translates into the following directions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
What is the temperature in January in Rio Dell?
What is the average humidity in January in Rio Dell?
How many days does it rain in January in Rio Dell?
When it does not snow in Rio Dell?
Does it snow in Rio Dell in January?
What is the average length of the day in January in Rio Dell?
When are sunrise and sunset in January in Rio Dell?
How many hours of sunshine does Rio Dell have in January?
When is the lowest UV index in Rio Dell?
What is the UV index reading in January in Rio Dell?
Average temperature in January
Rio Dell, CA
- Average high temperature in January: 54.3°F
The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is December (52.9°F).
- Average low temperature in January: 41.4°F
The month with the highest average low temperature is August (51.8°F).
The coldest month (with the lowest average low temperature) is February (39.7°F).
Average pressure in January
Rio Dell, 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 (29.96"Hg).
Average wind speed in January
Rio Dell, CA
- Average wind speed in January: 6.8mph
The windiest month (with the highest average wind speed) is June (7.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in January
Rio Dell, CA
- Average humidity in January: 80%
The month with the highest relative humidity is March (83%).
The month with the lowest relative humidity is September (73%).
Average rainfall in January
Rio Dell, CA
- Average rainfall in January: 4.41"
The wettest month (with the highest rainfall) is December (4.96").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in January
Rio Dell, CA
- Average rainfall days in January: 13.8 days
The month with the highest number of rainy days is March (17.3 days).
The months with the least rainy days are July and August (1.8 days).
Average snowfall in January
Rio Dell, CA
- Average snowfall in January: 0"
The month with the highest snowfall is February (0.59").
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
Rio Dell, CA
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in January /
Average sunshine in January
Rio Dell, CA
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 5h and 1min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in January
Rio Dell, CA
- Average sunshine days in January: 15.6 days
The month with the most sunshine days is July (28.5 days).
The month with the least sunshine days is March (11.9 days).
Average UV index in January
Rio Dell, CA
- Average UV index in January: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in January
Rio Dell, CA
- Average cloud cover in January: 45
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in January
Rio Dell, CA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are May, July and August (5mi).
Rio Dell, California, USA
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