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
Transitioning into January, Jamacha experiences an average high-temperature of a still comfortable 64.6°F (18.1°C), marking a minor shift from the preceding month. January witnesses an average low-temperature hovering around a frosty 47.8°F (8.8°C).Humidity
In January, the average relative humidity is 54%.Rainfall
In Jamacha, California, during January, the rain falls for 5.7 days and regularly aggregates up to 1.1" (28mm) of precipitation. Throughout the year, there are 60.6 rainfall days, and 8.66" (220mm) of precipitation is accumulated.Daylight
The average length of the day in January is 10h and 17min.On the first day of the month, sunrise is at 6:49 am and sunset at 4:52 pm. On the last day of January, sunrise is at 6:43 am and sunset at 5:19 pm PST.
Sunshine
In Jamacha, the average sunshine in January is 6.9h.UV index
The average daily maximum UV index in January is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: An average UV index of 4 in January transforms into this advice:
Guard yourself - Precautionary measures against sun damage are advocated. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in January?
What is the average humidity in January?
How many days does it rain in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
What is the UV index reading in January?
Average temperature in January
Jamacha, CA
- Average high temperature in January: 64.6°F
The warmest month (with the highest average high temperature) is August (84.2°F).
The month with the lowest average high temperature is December (63°F).
- Average low temperature in January: 47.8°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 (47.3°F).
Average pressure in January
Jamacha, CA
- Average pressure in January: 30.08"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are June and September (29.87"Hg).
Average wind speed in January
Jamacha, CA
- Average wind speed in January: 5mph
The windiest months (with the highest average wind speed) are April and May (5.5mph).
The calmest months (with the lowest average wind speed) are September and October (4.3mph).
Average humidity in January
Jamacha, CA
- Average humidity in January: 54%
The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).
Average rainfall in January
Jamacha, CA
- Average rainfall in January: 1.1"
The wettest month (with the highest rainfall) is February (1.81").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in January
Jamacha, CA
- Average rainfall days in January: 5.7 days
The month with the highest number of rainy days is March (7.7 days).
The month with the least rainy days is June (1.3 days).
Average daylight in January /
Average sunshine in January
Jamacha, CA
- Average daylight in January: 10h and 2min
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 5min
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 42min).
Average sunshine days in January
Jamacha, CA
- Average sunshine days in January: 24.5 days
The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is July (20.3 days).
Average UV index in January
Jamacha, CA
- Average UV index in January: 4
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in January
Jamacha, CA
- Average cloud cover in January: 20
The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in January
Jamacha, 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).
Jamacha, California, USA
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