January weather forecastEureka, CA
January
Weather in January
January, the same as December, is a cool winter month in Eureka, California, with an average temperature ranging between max 53.8°F (12.1°C) and min 44.2°F (6.8°C).Temperature
Eureka in January witnesses an average high-temperature of a still cool 53.8°F (12.1°C), indicating a slight variation from December's 52.9°F (11.6°C). During January, Eureka sees a mean low-temperature of 44.2°F (6.8°C).Humidity
The average relative humidity in January is 79%.Rainfall
In Eureka, in January, during 9.8 rainfall days, 1.26" (32mm) of precipitation is typically accumulated. In Eureka, during the entire year, the rain falls for 77.3 days and collects up to 8.58" (218mm) of precipitation.Snowfall
In Eureka, snow does not fall in January, March through December.Daylight
In Eureka, the average length of the day in January is 9h and 39min.On the first day of January, sunrise is at 7:40 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:32 pm PST.
Sunshine
The average sunshine in January is 5.3h.UV index
January through March, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 3 during January, leads to the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Eureka, CA
- Average high temperature in January: 53.8°F
The warmest month (with the highest average high temperature) is August (68.4°F).
The months with the lowest average high temperature are February and December (52.9°F).
- Average low temperature in January: 44.2°F
The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is February (42.4°F).
Average pressure in January
Eureka, CA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in January
Eureka, CA
- Average wind speed in January: 8mph
The windiest month (with the highest average wind speed) is March (9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in January
Eureka, CA
- Average humidity in January: 79%
The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is October (76%).
Average rainfall in January
Eureka, CA
- Average rainfall in January: 1.26"
The wettest month (with the highest rainfall) is December (1.73").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in January
Eureka, CA
- Average rainfall days in January: 9.8 days
The month with the highest number of rainy days is March (11.2 days).
The month with the least rainy days is August (1.7 days).
Average snowfall in January
Eureka, CA
- Average snowfall in January: 0"
The month with the highest snowfall is February (0.04").
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
Eureka, CA
- Average snowfall days in January: 0 days
The months with the highest number of snowfall days are February and December (0.1 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
Eureka, CA
- Average daylight in January: 9h and 36min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 5h and 18min
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 12min).
Average sunshine days in January
Eureka, CA
- Average sunshine days in January: 20.3 days
The month with the most sunshine days is July (27.7 days).
The month with the least sunshine days is March (17.9 days).
Average UV index in January
Eureka, CA
- Average UV index in January: 3
The month with the highest UV index is July (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
Eureka, CA
- Average cloud cover in January: 43
The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in January
Eureka, CA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
