Climate and monthly weather forecastYountville, CA
Climate and monthly weather forecast
Weather in January
January in Yountville, California, is a moderate winter month, with temperature in the range of an average high of 55.9°F (13.3°C) and an average low of 41.2°F (5.1°C). Yountville registers an average high-temperature of a mild 55.9°F (13.3°C) with the arrival of January, showing minor deviation from the preceding month. Weather in January »Weather in February
February, the last month of the winter in Yountville, is another refreshing month, with an average temperature varying between 59°F (15°C) and 41.4°F (5.2°C). In February, Yountville notes an average high-temperature of a still mild 59°F (15°C), hardly different from the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a comfortable month in Yountville, California, with an average temperature varying between 42.3°F (5.7°C) and 61.3°F (16.3°C). Stepping into March, Yountville records an average high-temperature of a comfortable 61.3°F (16.3°C), almost consistent with February. Weather in March »Weather in April
April is a pleasant spring month in Yountville, California, with temperature in the range of an average low of 44.4°F (6.9°C) and an average high of 68°F (20°C). April signifies a subtle uplift in the average high-temperature, adjusting from a refreshing 61.3°F (16.3°C) in March to an agreeable 68°F (20°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Yountville, California, with an average temperature varying between 48.2°F (9°C) and 73.6°F (23.1°C). In Yountville, the average high-temperature in May slightly increases from a pleasant 68°F (20°C) in April to a moderately hot 73.6°F (23.1°C). Weather in May »Weather in June
The first month of the summer, June, is also a moderately hot month in Yountville, California, with an average temperature ranging between min 53.2°F (11.8°C) and max 82.8°F (28.2°C). The arrival of June sees a shift in the average high-temperature, moving from 73.6°F (23.1°C) in May to a still moderately hot 82.8°F (28.2°C). Weather in June »Weather in July
July in Yountville, California, is a tropical summer month, with an average temperature varying between 55°F (12.8°C) and 86.5°F (30.3°C). The warmest temperatures occur during July, when averages reach a peak of 86.5°F (30.3°C) and a low of 55°F (12.8°C). In July, the heat index is appraised at a hot 91.4°F (33°C). Weather in July »Weather in August
The last month of the summer, August, is another hot month in Yountville, California, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 86.2°F (30.1°C). Yountville, California, starts August with an average high-temperature of a still hot 86.2°F (30.1°C), a minor shift from July's 86.5°F (30.3°C). Weather in August »Weather in September
September, the first month of the autumn in Yountville, is still a warm month, with an average temperature ranging between max 84°F (28.9°C) and min 55.2°F (12.9°C). Yountville's weather in September indicates an average high-temperature of a moderately hot 84°F (28.9°C), nearly consistent with the 86.2°F (30.1°C) of August. Weather in September »Weather in October
October, the same as September, is a moderately hot autumn month in Yountville, California, with an average temperature varying between 51.8°F (11°C) and 74.5°F (23.6°C). October ushers in a slight temperature change, with average high-temperatures reducing from September's moderately hot 84°F (28.9°C) to a still warm 74.5°F (23.6°C). Weather in October »Weather in November
The last month of the autumn, November, is also an enjoyable month in Yountville, California, with an average temperature varying between 63.3°F (17.4°C) and 45.1°F (7.3°C). During the transition into November, Yountville observes a decrease in the average high-temperature, falling from a warm 74.5°F (23.6°C) in October to an enjoyable 63.3°F (17.4°C). Weather in November »Weather in December
December, the first month of the winter in Yountville, is still a cool month, with an average temperature fluctuating between 54.5°F (12.5°C) and 40.1°F (4.5°C). With average high and low temperatures of 54.5°F (12.5°C) and 40.1°F (4.5°C) respectively, December is Yountville's coldest month. Weather in December »Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Throughout the year, there are 77.8 rainfall days, and 16.02" (407mm) of precipitation is accumulated.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3.
The month with the most rainfall is February, when the rain falls for 9.4 days and typically aggregates up to 3.43" (87mm) of precipitation.
With an average relative humidity of 76%, March is the most humid month.
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.
June has the longest days of the year, with an average of 14h and 48min of daylight.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
July is the month when Yountville experiences its warmest temperatures, averaging a high of 86.5°F (30.3°C) and a low of 55°F (12.8°C).
The months with the least rainfall in Yountville are July and August Rain falls for 1.2 days and accumulates 0.04" (1mm) of rain.
The month with the most sunshine is July, with an average of 12h of sunshine.
The least humid month is September, with an average relative humidity of 54%.
In Yountville, December registers the lowest temperatures, averaging 54.5°F (12.5°C) at the peak and 40.1°F (4.5°C) at the lowest.
With an average of 9h and 30min of daylight, December has the shortest days of the year.
December has the least sunshine of the year, with an average of 5.6h of sunshine.
Average temperature
Yountville, CA
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (54.5°F).
The month with the highest average low temperature is August (55.4°F).
The coldest month (with the lowest average low temperature) is December (40.1°F).
Average pressure
Yountville, CA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed
Yountville, CA
- Average wind speed in January:
4.5mph - Average wind speed in February:
5.2mph - Average wind speed in March:
5.4mph - Average wind speed in April:
5.8mph - Average wind speed in May:
6mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5mph - Average wind speed in September:
4.7mph - Average wind speed in October:
4.6mph - Average wind speed in November:
4.3mph - Average wind speed in December:
4.7mph
The windiest month (with the highest average wind speed) is May (6mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).
Average humidity
Yountville, CA
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (54%).
Average rainfall
Yountville, CA
- Average rainfall in January:
3.03" - Average rainfall in February:
3.43" - Average rainfall in March:
2.52" - Average rainfall in April:
0.79" - Average rainfall in May:
0.83" - Average rainfall in June:
0.16"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.08" - Average rainfall in October:
0.91" - Average rainfall in November:
1.46" - Average rainfall in December:
2.76"
The wettest month (with the highest rainfall) is February (3.43").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days
Yountville, CA
- Average rainfall days in January:
10.3 days - Average rainfall days in February:
9.4 days - Average rainfall days in March:
13.9 days - Average rainfall days in April:
8.3 days - Average rainfall days in May:
5.6 days - Average rainfall days in June:
2.4 days
- Average rainfall days in July:
1.2 days - Average rainfall days in August:
0.9 days - Average rainfall days in September:
2.1 days - Average rainfall days in October:
4.7 days - Average rainfall days in November:
7.6 days - Average rainfall days in December:
11.4 days
The month with the highest number of rainy days is March (13.9 days).
The month with the least rainy days is August (0.9 days).
Average daylight / Average sunshine
Yountville, CA
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
5h and 42min - Average sunshine in February:
6h and 0min - Average sunshine in March:
7h and 24min - Average sunshine in April:
10h and 0min - Average sunshine in May:
10h and 42min - Average sunshine in June:
11h and 36min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 54min - Average sunshine in September:
11h and 6min - Average sunshine in October:
7h and 0min - Average sunshine in November:
6h and 18min - Average sunshine in December:
5h and 36min
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 36min).
Average sunshine days
Yountville, CA
- Average sunshine days in January:
19.6 days - Average sunshine days in February:
17.8 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
20.8 days - Average sunshine days in May:
24.1 days - Average sunshine days in June:
26.9 days
- Average sunshine days in July:
29.4 days - Average sunshine days in August:
29.3 days - Average sunshine days in September:
26.9 days - Average sunshine days in October:
25.5 days - Average sunshine days in November:
21.5 days - Average sunshine days in December:
18.7 days
The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (15.8 days).
Average UV index
Yountville, CA
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover
Yountville, CA
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility
Yountville, CA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
