Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in Cupertino, California, is a moderate winter month, with temperature in the range of an average high of 58.5°F (14.7°C) and an average low of 44.6°F (7°C). In Cupertino, the average high-temperature in January is almost the same as in December - a still mild 58.5°F (14.7°C). Weather in January »
Weather in February
The last month of the winter, February, is another mild month in Cupertino, California, with an average temperature ranging between max 59.7°F (15.4°C) and min 44.2°F (6.8°C). In Cupertino, California, the average high-temperature in February is essentially the same as in January - a still moderate 59.7°F (15.4°C). Weather in February »
Weather in March
The first month of the spring, March, is a comfortable month in Cupertino, California, with an average temperature fluctuating between 61.7°F (16.5°C) and 44.2°F (6.8°C). In Cupertino, the average high-temperature in March is essentially the same as in February - a comfortable 61.7°F (16.5°C). Weather in March »
Weather in April
April, the same as March, is another comfortable spring month in Cupertino, California, with an average temperature varying between 46°F (7.8°C) and 65.7°F (18.7°C). In Cupertino, California, the average high-temperature in April is relatively the same as in March - a still comfortable 65.7°F (18.7°C). Weather in April »
Weather in May
May, the last month of the spring in Cupertino, is a pleasant month, with temperature in the range of an average low of 48.9°F (9.4°C) and an average high of 69.3°F (20.7°C). In Cupertino, the average high-temperature in May is almost the same as in April - a pleasant 69.3°F (20.7°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Cupertino, California, with an average temperature ranging between max 75.7°F (24.3°C) and min 52.7°F (11.5°C). In Cupertino, the average high-temperature in June marginally rises from a pleasant 69.3°F (20.7°C) in May to a warm 75.7°F (24.3°C). Weather in June »
Weather in July
July, like June, in Cupertino, California, is another warm summer month, with an average temperature varying between 79.3°F (26.3°C) and 55°F (12.8°C). July is the warmest month, with an average high-temperature of 79.3°F (26.3°C) and an average low-temperature of 55°F (12.8°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Cupertino, California, with an average temperature ranging between max 79.2°F (26.2°C) and min 56.1°F (13.4°C). In Cupertino, California, the average high-temperature in August is practically the same as in July - a still moderately hot 79.2°F (26.2°C). Weather in August »
Weather in September
September, the first month of the autumn in Cupertino, is still a warm month, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 55.8°F (13.2°C). In September, the average high-temperature is essentially the same as in August - a still moderately hot 77.5°F (25.3°C). Weather in September »
Weather in October
October, the same as September, in Cupertino, California, is an agreeable autumn month, with an average temperature fluctuating between 53.8°F (12.1°C) and 71.6°F (22°C). In Cupertino, California, the average high-temperature in October marginally drops from a moderately hot 77.5°F (25.3°C) in September to an agreeable 71.6°F (22°C). Weather in October »
Weather in November
The last month of the autumn, November, is also an enjoyable month in Cupertino, California, with an average temperature fluctuating between 63.9°F (17.7°C) and 48.4°F (9.1°C). In November, the average high-temperature marginally drops from a pleasant 71.6°F (22°C) in October to a comfortable 63.9°F (17.7°C). Weather in November »
Weather in December
December, the first month of the winter in Cupertino, is still a mild month, with temperature in the range of an average high of 57°F (13.9°C) and an average low of 44.4°F (6.9°C). With an average high-temperature of 57°F (13.9°C) and an average low-temperature of 44.4°F (6.9°C), December is the coldest month. Weather in December »
[Resources]FAQ
How many days does it rain in Cupertino?
Throughout the year, there are 53.6 rainfall days, and 5.39" (137mm) of precipitation is accumulated.
When is the lowest UV index in Cupertino?
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Cupertino.
What is the rainiest month in Cupertino?
The month with the most rainfall in Cupertino, California, is February, when the rain falls for 6 days and typically aggregates up to 1.02" (26mm) of precipitation.
What is the most humid month in Cupertino?
March is the most humid month, with an average relative humidity of 74%.
When is Daylight Saving Time (DST) in Cupertino?
On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from PDT to PST.
When are the longest days in Cupertino?
The month with the longest days in Cupertino, California, is June, with an average of 14h and 41min of daylight.
What is the month with the highest UV index in Cupertino?
With an average maximum UV index of 6, June is the month with the highest UV index in Cupertino.
What is the warmest month in Cupertino?
The warmest month is July, with an average high-temperature of 79.3°F (26.3°C) and an average low-temperature of 55°F (12.8°C).
What is the least humid month in Cupertino?
The months with the lowest humidity in Cupertino are July, September and October, with an average relative humidity of 64%.
What is the driest month in Cupertino?
The months with the least rainfall are July and August Rain falls for 1.3 days and accumulates 0.04" (1mm) of rain.
What are the months with the most sunshine in Cupertino?
July and August, with an average of 12h of sunshine, are months with the most sunshine.
What is the coldest month in Cupertino?
December is the coldest month in Cupertino, California, with an average high-temperature of 57°F (13.9°C) and an average low-temperature of 44.4°F (6.9°C).
What is the month with the shortest days in Cupertino?
With an average of 9h and 38min of daylight, December has the shortest days of the year in Cupertino.
What is the month with the least sunshine in Cupertino?
With an average of 5.9h of sunshine, December has the least sunshine of the year in Cupertino.
Average temperature
Cupertino, CA
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (57°F).
The month with the highest average low temperature is August (56.1°F).
The coldest months (with the lowest average low temperature) are February and March (44.2°F).
Average pressure
Cupertino, CA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
30.04"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.93"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 (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed
Cupertino, CA
- Average wind speed in January:
4.9mph - Average wind speed in February:
5.8mph - Average wind speed in March:
6mph - Average wind speed in April:
6.2mph - Average wind speed in May:
6.1mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.7mph - Average wind speed in September:
4.6mph - Average wind speed in October:
4.7mph - Average wind speed in November:
4.8mph - Average wind speed in December:
5.3mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).
Average humidity
Cupertino, CA
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are July, September and October (64%).
Average rainfall
Cupertino, CA
- Average rainfall in January:
0.98" - Average rainfall in February:
1.02" - Average rainfall in March:
0.91" - Average rainfall in April:
0.31" - Average rainfall in May:
0.28" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.08" - Average rainfall in October:
0.2" - Average rainfall in November:
0.59" - Average rainfall in December:
0.87"
The wettest month (with the highest rainfall) is February (1.02").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days
Cupertino, CA
- Average rainfall days in January:
7.4 days - Average rainfall days in February:
6 days - Average rainfall days in March:
9 days - Average rainfall days in April:
5.5 days - Average rainfall days in May:
4 days - Average rainfall days in June:
1.3 days
- Average rainfall days in July:
1.3 days - Average rainfall days in August:
0.8 days - Average rainfall days in September:
2.5 days - Average rainfall days in October:
3 days - Average rainfall days in November:
4.6 days - Average rainfall days in December:
8.2 days
The month with the highest number of rainy days is March (9 days).
The month with the least rainy days is August (0.8 days).
Average daylight / Average sunshine
Cupertino, CA
- Average daylight in January:
9h and 56min - Average daylight in February:
10h and 50min - Average daylight in March:
11h and 59min - Average daylight in April:
13h and 11min - Average daylight in May:
14h and 11min - Average daylight in June:
14h and 41min
- Average daylight in July:
14h and 26min - Average daylight in August:
13h and 33min - Average daylight in September:
12h and 25min - Average daylight in October:
11h and 13min - Average daylight in November:
10h and 11min - Average daylight in December:
9h and 38min
The month with the longest days is June (Average daylight: 14h and 41min).
The month with the shortest days is December (Average daylight: 9h and 38min).
- Average sunshine in January:
6h and 18min - Average sunshine in February:
6h and 24min - Average sunshine in March:
7h and 54min - Average sunshine in April:
10h and 24min - Average sunshine in May:
10h and 54min - Average sunshine in June:
11h and 48min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
11h and 6min - Average sunshine in October:
7h and 6min - Average sunshine in November:
6h and 36min - Average sunshine in December:
5h and 54min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days
Cupertino, CA
- Average sunshine days in January:
22 days - Average sunshine days in February:
20.8 days - Average sunshine days in March:
20.8 days - Average sunshine days in April:
24 days - Average sunshine days in May:
24.6 days - Average sunshine days in June:
27.2 days
- Average sunshine days in July:
28.3 days - Average sunshine days in August:
28.5 days - Average sunshine days in September:
26.5 days - Average sunshine days in October:
26.7 days - Average sunshine days in November:
24.2 days - Average sunshine days in December:
21.5 days
The month with the most sunshine days is August (28.5 days).
The months with the least sunshine days are February and March (20.8 days).
Average UV index
Cupertino, CA
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover
Cupertino, CA
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility
Cupertino, 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).
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