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
The dawn of January sees an average high-temperature of a still cool 53.8°F (12.1°C), subtly contrasting with December's 52.9°F (11.6°C). During the nights in January, Eureka experiences a consistent average 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, California, snow does not fall in January, March through December.Daylight
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
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 3 during January translates into the following directions:
Ensure safety - Recommendations to avert sunburn are presented. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What is the average January temperature in Eureka?
What is the average humidity in January in Eureka?
How much does it rain in Eureka in January?
When it does not snow in Eureka?
Does it snow in Eureka in January?
What is the average length of the day in January in Eureka?
What time are sunrise and sunset in January in Eureka?
How long on average sun shines in January in Eureka?
When is the lowest UV index in Eureka?
How high is the UV index in January in Eureka?
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 4min
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 2min
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).
Eureka, California, USA
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