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
January's climate shows a minor adjustment in average high-temperatures to a still fresh 54.1°F (12.3°C) from December's 53.1°F (11.7°C). In January, the temperature drops to an average of 43°F (6.1°C) at night.Humidity
In January, the average relative humidity in Fortuna is 79%.Rainfall
In Fortuna, in January, during 13.5 rainfall days, 4.37" (111mm) of precipitation is typically accumulated. Throughout the year, there are 110.4 rainfall days, and 28.07" (713mm) of precipitation is accumulated.Snowfall
In Fortuna, snow does not fall in January, March through December.Daylight
In Fortuna, the average length of the day in January is 9h and 40min.On the first day of January, sunrise is at 7:40 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:32 pm PST.
Sunshine
In Fortuna, 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 threat to health 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:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Fortuna in January?
What is the average humidity in January?
How many days does it rain in January?
When it does not snow?
Does it snow in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How long on average sun shines in January?
What is the month with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Fortuna, CA
- Average high temperature in January: 54.1°F
The warmest month (with the highest average high temperature) is August (71.6°F).
The months with the lowest average high temperature are February and December (53.1°F).
- Average low temperature in January: 43°F
The month with the highest average low temperature is August (53.2°F).
The coldest month (with the lowest average low temperature) is February (41.7°F).
Average pressure in January
Fortuna, 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
Fortuna, CA
- Average wind speed in January: 7.3mph
The windiest months (with the highest average wind speed) are March and June (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in January
Fortuna, CA
- Average humidity in January: 79%
The months with the highest relative humidity are February and March (82%).
The months with the lowest relative humidity are September and October (75%).
Average rainfall in January
Fortuna, CA
- Average rainfall in January: 4.37"
The wettest month (with the highest rainfall) is December (5.16").
The driest months (with the least rainfall) are July and August (0.12").
Average rainfall days in January
Fortuna, CA
- Average rainfall days in January: 13.5 days
The month with the highest number of rainy days is March (16.8 days).
The month with the least rainy days is August (1.8 days).
Average snowfall in January
Fortuna, CA
- Average snowfall in January: 0"
The month with the highest snowfall is February (0.31").
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
Fortuna, 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
Fortuna, 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 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 6min).
Average sunshine days in January
Fortuna, CA
- Average sunshine days in January: 16.7 days
The month with the most sunshine days is July (28.1 days).
The month with the least sunshine days is March (12.3 days).
Average UV index in January
Fortuna, 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
Fortuna, CA
- Average cloud cover in January: 43
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in January
Fortuna, 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).
Fortuna, California, USA
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