Monthly weather forecast and climate
Fortuna, CA

Weather in January

January, like December, in Fortuna, California, is a cool winter month, with temperature in the range of an average high of 54.1°F (12.3°C) and an average low of 43°F (6.1°C). In Fortuna, the average high-temperature in January is relatively the same as in December - a still cool 54.1°F (12.3°C). Weather in January »

Weather in February

The last month of the winter, February, is also a fresh month in Fortuna, California, with average temperature varying between 41.7°F (5.4°C) and 53.1°F (11.7°C). February and December, with an average high-temperature of 53.1°F (11.7°C), are the coldest months. Weather in February »

Weather in March

March, the first month of the spring, in Fortuna, is also a fresh month, with average temperature ranging between min 41.9°F (5.5°C) and max 54.3°F (12.4°C). In March, the average high-temperature is essentially the same as in February - a still fresh 54.3°F (12.4°C). Weather in March »

Weather in April

April is a moderate spring month in Fortuna, California, with average temperature varying between 43.7°F (6.5°C) and 57.4°F (14.1°C). In April, the average high-temperature is practically the same as in March - a mild 57.4°F (14.1°C). Weather in April »

Weather in May

The last month of the spring, May, is an enjoyable month in Fortuna, California, with average temperature varying between 46.2°F (7.9°C) and 61.3°F (16.3°C). In Fortuna, the average high-temperature in May is relatively the same as in April - a comfortable 61.3°F (16.3°C). Weather in May »

Weather in June

June, the first month of the summer, in Fortuna, is still a comfortable month, with average temperature varying between 65.8°F (18.8°C) and 50°F (10°C). In June, the average high-temperature is practically the same as in May - a still comfortable 65.8°F (18.8°C). Weather in June »

Weather in July

July is a pleasant summer month in Fortuna, California, with average temperature ranging between min 52.9°F (11.6°C) and max 70.7°F (21.5°C). In Fortuna, California, the average high-temperature in July is almost the same as in June - an agreeable 70.7°F (21.5°C). Weather in July »

Weather in August

The last month of the summer, August, is another pleasant month in Fortuna, California, with average temperature varying between 71.6°F (22°C) and 53.2°F (11.8°C). August is the warmest month, with an average high-temperature of 71.6°F (22°C) and an average low-temperature of 53.2°F (11.8°C). Weather in August »

Weather in September

September, the first month of the autumn, in Fortuna, is also an agreeable month, with average temperature varying between 52.2°F (11.2°C) and 70.3°F (21.3°C). In September, the average high-temperature is relatively the same as in August - a still agreeable 70.3°F (21.3°C). Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Fortuna, California, with average temperature fluctuating between 64.6°F (18.1°C) and 49.1°F (9.5°C). In October, the average high-temperature slightly decreases, from a pleasant 70.3°F (21.3°C) in September, to a comfortable 64.6°F (18.1°C). Weather in October »

Weather in November

November, the last month of the autumn, in Fortuna, is also a moderate month, with average temperature fluctuating between 57.6°F (14.2°C) and 45.3°F (7.4°C). In Fortuna, the average high-temperature in November marginally drops, from an enjoyable 64.6°F (18.1°C) in October, to a moderate 57.6°F (14.2°C). Weather in November »

Weather in December

The first month of the winter, December, is also a fresh month in Fortuna, California, with average temperature ranging between min 41.9°F (5.5°C) and max 53.1°F (11.7°C). The coldest months are February and December, with an average high-temperature of 53.1°F (11.7°C). Weather in December »
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FAQ

How much does it rain in Fortuna?

Throughout the year, in Fortuna, California, there are 110.4 rainfall days, and 28.07" (713mm) of precipitation is accumulated.

How much does it snow in Fortuna?

Throughout the year, 0.31" (8mm) of snow is accumulated.

When it does not snow in Fortuna?

January, March through December are months without snowfall.

What are the months with the lowest UV index in Fortuna?

Months with the lowest UV index in Fortuna, California, are January through March, November and December, with an average maximum UV index of 3.

What are the coldest months in Fortuna?

February and December, with an average high-temperature of 53.1°F (11.7°C), are the coldest months.

What is the most humid month in Fortuna?

Months with the highest humidity in Fortuna, California, are February and March, with an average relative humidity of 82%.

When does it snow in Fortuna?

The only month with snowfall in Fortuna, California, is February.

What is the snowiest month in Fortuna?

February is the month with the most snowfall in Fortuna, California. Snow falls for 0.3 days and accumulates 0.31" (8mm) of snow.

When are the longest days in Fortuna?

The month with the longest days in Fortuna, California, is June, with an average of 15h of daylight.

What are the months with the highest UV index in Fortuna?

June through August, with an average maximum UV index of 5, are months with the highest UV index in Fortuna.

What is the driest month in Fortuna?

July and August are months with the least rain in Fortuna when the rain falls for 2.3 days and typically aggregates up to 0.12" (3mm) of rain.

What is the month with the most sunshine in Fortuna?

Months with the most sunshine in Fortuna, California, are July and August, with an average of 11.6h of sunshine.

What is the warmest month in Fortuna?

With an average high-temperature of 71.6°F (22°C) and an average low-temperature of 53.2°F (11.8°C), August is the warmest month.

What are the least humid months in Fortuna?

Months with the lowest humidity in Fortuna are September and October, with an average relative humidity of 75%.

What is the wettest month in Fortuna?

The month with the most rainfall in Fortuna, California, is December when the rain falls for 14.9 days and typically aggregates up to 5.16" (131mm) of precipitation.

What is the month with the shortest days in Fortuna?

With an average of 9.3h of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Fortuna?

The month with the least sunshine in Fortuna, California, is December, with an average of 5.1h of sunshine.

Average temperature
Fortuna, CA

Average temperature - Fortuna, CA

The warmest month (with the highest average high temperature) is August (71.6°F).
Months with the lowest average high temperature are February and December (53.1°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).

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Average pressure
Fortuna, CA

Average pressure - Fortuna, CA

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is August (29.96").

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Average wind speed
Fortuna, CA

Average wind speed - Fortuna, CA

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).

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Average humidity
Fortuna, CA

Average humidity - Fortuna, CA

Months with the highest relative humidity are February and March (82%).
Months with the lowest relative humidity are September and October (75%).

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Average rainfall
Fortuna, CA

Average rainfall - Fortuna, CA

The wettest month (with the highest rainfall) is December (5.16").
The driest months (with the least rainfall) are July and August (0.12").

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Average rainfall days
Fortuna, CA

Average rainfall days - Fortuna, CA

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).

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Average snowfall
Fortuna, CA

Average snowfall - Fortuna, CA

The month with the highest snowfall is February (0.31").
Months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days
Fortuna, CA

Average snowfall days - Fortuna, CA

The month with the highest number of snowfall days is February (0.3 days).
Months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).

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Average daylight / Average sunshine
Fortuna, CA

Average daylight / Average sunshine - Fortuna, CA

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

Months with the most sunshine are July and August (Average sunshine: 11.6h).
The month with the least sunshine is December (Average sunshine: 5.1h).

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Average sunshine days
Fortuna, CA

Average sunshine days - Fortuna, CA

The month with the most sunshine days is July (28.1 days).
The month with the least sunshine days is March (12.3 days).

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Average UV index
Fortuna, CA

Average UV index - Fortuna, CA

Months with the highest UV index are June, July and August (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 3).

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Average visibility
Fortuna, CA

Average visibility - Fortuna, CA

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).

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