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
With the onset of January, the average high-temperature stands at a still fresh 53.8°F (12.1°C), closely aligned with December's 51.3°F (10.7°C). Penn Valley, in January, experiences an average temperature of 38.3°F (3.5°C) at night.Humidity
The average relative humidity in January is 69%.Rainfall
In Penn Valley, during January, the rain falls for 10.3 days and regularly aggregates up to 5.31" (135mm) of precipitation. Throughout the year, there are 82 rainfall days, and 33.11" (841mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. In Penn Valley, in January, snow falls for 0.7 days, with typically accumulated 1.42" (36mm) of snow. In Penn Valley, during the entire year, snow falls for 6.8 days and aggregates up to 14.41" (366mm) of snow.Daylight
The average length of the day in January is 9h and 47min.On the first day of January, sunrise is at 7:24 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:23 pm PST.
Sunshine
With an average of 5.7h of sunshine, January has the least sunshine of the year.UV index
The average daily maximum UV index in January in Penn Valley is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 3 during January morphs into the following directions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Boost your sun resistance with garments that are densely woven yet spacious. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average January temperature?
What is the average humidity in January?
How many days does it rain in January?
How much does it snow in Penn Valley in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Penn Valley have in January?
What is the UV index reading in January?
Average temperature in January
Penn Valley, CA
- Average high temperature in January: 53.8°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is December (51.3°F).
- Average low temperature in January: 38.3°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is December (37.2°F).
Average pressure in January
Penn Valley, CA
- Average pressure in January: 30.17"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in January
Penn Valley, CA
- Average wind speed in January: 5.5mph
The windiest month (with the highest average wind speed) is February (6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in January
Penn Valley, CA
- Average humidity in January: 69%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (37%).
Average rainfall in January
Penn Valley, CA
- Average rainfall in January: 5.31"
The wettest month (with the highest rainfall) is March (6.57").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in January
Penn Valley, CA
- Average rainfall days in January: 10.3 days
The month with the highest number of rainy days is March (15.1 days).
The month with the least rainy days is July (1.1 days).
Average snowfall in January
Penn Valley, CA
- Average snowfall in January: 1.42"
The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in January
Penn Valley, CA
- Average snowfall days in January: 0.7 days
The month with the highest number of snowfall days is March (2.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Penn Valley, CA
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 5h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
Average sunshine days in January
Penn Valley, CA
- Average sunshine days in January: 19.6 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (14.8 days).
Average UV index in January
Penn Valley, CA
- Average UV index in January: 3
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in January
Penn Valley, CA
- Average cloud cover in January: 35
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in January
Penn Valley, 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).
Penn Valley, California, USA
Weather forecast for your location
2. Allow the app to use your location