Climate and monthly weather forecast
Boonville, CA

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Weather in January

January, like December, in Boonville, California, is another fresh winter month, with an average temperature fluctuating between 55.2°F (12.9°C) and 38.8°F (3.8°C). The onset of January manifests an average high-temperature of a still cool 55.2°F (12.9°C), demonstrating a minor variation from the preceding month. Weather in January »

Weather in February

February, the last month of the winter in Boonville, is a refreshing month, with temperature in the range of an average low of 37.9°F (3.3°C) and an average high of 56.3°F (13.5°C). The average high-temperature during February registers at a moderate 56.3°F (13.5°C), closely corresponding to the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Boonville, is still a mild month, with an average temperature ranging between min 38.7°F (3.7°C) and max 57.6°F (14.2°C). The unfolding of March shows an average high-temperature of a still refreshing 57.6°F (14.2°C), indicating a slight variance from February's 56.3°F (13.5°C). Weather in March »

Weather in April

April in Boonville, California, is an enjoyable spring month, with temperature in the range of an average low of 41°F (5°C) and an average high of 63.1°F (17.3°C). The start of April brings a subtle shift in the average high-temperature, edging up from March's mild 57.6°F (14.2°C) to a still refreshing 63.1°F (17.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Boonville, California, with an average temperature ranging between min 45.1°F (7.3°C) and max 69.1°F (20.6°C). The arrival of May witnesses a small shift in the average high-temperature, moving from a refreshing 63.1°F (17.3°C) in April to an agreeable 69.1°F (20.6°C). Weather in May »

Weather in June

June, the first month of the summer in Boonville, is a warm month, with an average temperature varying between 50.5°F (10.3°C) and 78.1°F (25.6°C). As Boonville enters June, the average high-temperature increases from the an agreeable 69.1°F (20.6°C) of May to a moderately hot 78.1°F (25.6°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Boonville, California, with temperature in the range of an average high of 85.3°F (29.6°C) and an average low of 53.6°F (12°C). July is the month when Boonville experiences its warmest temperatures, averaging a high of 85.3°F (29.6°C) and a low of 53.6°F (12°C). In July, the heat index is appraised at a hot 89.6°F (32°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Boonville, California, with an average temperature fluctuating between 84.7°F (29.3°C) and 53.4°F (11.9°C). August's commencement is accompanied by an average high-temperature of a still moderately hot 84.7°F (29.3°C), diverging marginally from July's 85.3°F (29.6°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Boonville, California, with an average temperature ranging between max 80.8°F (27.1°C) and min 51.4°F (10.8°C). The introduction of September sees an average high-temperature of a still moderately hot 80.8°F (27.1°C), hardly deviating from August. Weather in September »

Weather in October

October, like September, is another pleasant autumn month in Boonville, California, with an average temperature ranging between min 47.1°F (8.4°C) and max 72°F (22.2°C). As September shifts into October, a minor alteration in temperatures is observed, with average highs reducing from a warm 80.8°F (27.1°C) to an agreeable 72°F (22.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is another comfortable month in Boonville, California, with temperature in the range of an average low of 40.3°F (4.6°C) and an average high of 61°F (16.1°C). November brings a minor decrease, with the average high-temperature reducing from a pleasant 72°F (22.2°C) in October to an enjoyable 61°F (16.1°C). Weather in November »

Weather in December

The first month of the winter, December, is still a cool month in Boonville, California, with an average temperature varying between 37.4°F (3°C) and 53.6°F (12°C). Boonville witnesses the coldest weather in December, with temperatures averaging a high of 53.6°F (12°C) and a low of 37.4°F (3°C). Weather in December »
Updated: Jun 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How much does it rain?

In Boonville, during the entire year, the rain falls for 83.3 days and collects up to 17.72" (450mm) of precipitation.

When it does not snow?

January, March through December are months without snowfall.

How much does it snow?

In Boonville, during the entire year, snow aggregates up to 0.04" (1mm).

What is the rainiest month?

The months with the most rainfall are February and December, with an average 3.11" (79mm) of precipitation.

When does it snow?

February is the only month when snow falls.

What is the snowiest month?

February is the month with the most snowfall in Boonville. Snow falls for 0.3 days and accumulates 0.04" (1mm) of snow.

What is the month with the lowest UV index?

The months with the lowest UV index are February and November, with an average maximum UV index of 2.

What is the most humid month?

The most humid month is March, with an average relative humidity of 79%.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

When are the longest days?

June has the longest days of the year, with an average of 14h and 54min of daylight.

What is the month with the highest UV index?

June and July, with an average maximum UV index of 6, are months with the highest UV index in Boonville.

What time of the year is the hottest?

July, marked by an average high-temperature of 85.3°F (29.6°C) and a low-temperature of 53.6°F (12°C), is the warmest month.

What are the least humid months?

July and September, with an average relative humidity of 58%, are the least humid months.

What is the driest month?

July and August are months with the least rain when the rain falls for 1.8 days and typically aggregates up to 0.08" (2mm) of rain.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 12h of sunshine.

What is the coldest time of year?

The coldest period in Boonville is December, when temperatures fluctuate between an average high of 53.6°F (12°C) and a low of 37.4°F (3°C).

What is the month with the shortest days in Boonville?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 5.3h of sunshine.

Average temperature
Boonville, CA

Average temperature - Boonville, CA

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (53.6°F).

The month with the highest average low temperature is July (53.6°F).
The coldest month (with the lowest average low temperature) is December (37.4°F).

Average pressure
Boonville, CA

Average pressure - Boonville, CA

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

Average wind speed
Boonville, CA

Average wind speed - Boonville, CA

The windiest months (with the highest average wind speed) are April, May and June (5.5mph).
The calmest month (with the lowest average wind speed) is November (4.2mph).

Average humidity
Boonville, CA

Average humidity - Boonville, CA

The month with the highest relative humidity is March (79%).
The months with the lowest relative humidity are July and September (58%).

Average rainfall
Boonville, CA

Average rainfall - Boonville, CA

The wettest months (with the highest rainfall) are February and December (3.11").
The driest months (with the least rainfall) are July and August (0.08").

Average rainfall days
Boonville, CA

Average rainfall days - Boonville, CA

The month with the highest number of rainy days is March (14.3 days).
The month with the least rainy days is August (1.3 days).

Average snowfall
Boonville, CA

Average snowfall - Boonville, CA

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
Boonville, CA

Average snowfall days - Boonville, CA

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, November and December (0 days).

Average daylight / Average sunshine
Boonville, CA

Average daylight / Average sunshine - Boonville, CA

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days
Boonville, CA

Average sunshine days - Boonville, CA

The month with the most sunshine days is July (28.5 days).
The month with the least sunshine days is March (15.9 days).

Average UV index
Boonville, CA

Average UV index - Boonville, CA

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are February and November (UV index 2).

Average visibility
Boonville, CA

Average visibility - Boonville, CA

The months with the highest visibility are February, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, March and December (5mi).

Boonville, California, USA

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