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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 an average temperature ranging between min 44.6°F (7°C) and max 58.5°F (14.7°C). At the start of January, Cupertino's average high-temperature reaches a still mild 58.5°F (14.7°C), subtly different from the preceding month. Weather in January »
Weather in February
February, the last month of the winter in Cupertino, is also a moderate month, with an average temperature fluctuating between 59.7°F (15.4°C) and 44.2°F (6.8°C). As January turns into February, the average high-temperatures rest at a still refreshing 59.7°F (15.4°C), showing a minor variation from the prior month. Weather in February »
Weather in March
March, the first month of the spring in Cupertino, is an enjoyable month, with an average temperature ranging between min 44.2°F (6.8°C) and max 61.7°F (16.5°C). The transition into March shows a subtle variation to a comfortable 61.7°F (16.5°C) from February's 59.7°F (15.4°C) in the average high-temperature. Weather in March »
Weather in April
April, the same as March, is another comfortable spring month in Cupertino, California, with an average temperature fluctuating between 46°F (7.8°C) and 65.7°F (18.7°C). April registers an average high-temperature of a still refreshing 65.7°F (18.7°C), slightly varied from March's 61.7°F (16.5°C). Weather in April »
Weather in May
May, the last month of the spring in Cupertino, is a pleasant month, with an average temperature fluctuating between 48.9°F (9.4°C) and 69.3°F (20.7°C). The arrival of May brings an average high-temperature of an agreeable 69.3°F (20.7°C), closely following the temperature pattern of April. Weather in May »
Weather in June
June, the first month of the summer in Cupertino, is a warm month, with an average temperature ranging between max 75.7°F (24.3°C) and min 52.7°F (11.5°C). Observing a minor shift, the average high-temperature during June adjusts from May's pleasant 69.3°F (20.7°C) to a moderately hot 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 ranging between min 55°F (12.8°C) and max 79.3°F (26.3°C). July stands out as Cupertino's warmest month, with temperatures ranging between an average high of 79.3°F (26.3°C) and a low 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 fluctuating between 79.2°F (26.2°C) and 56.1°F (13.4°C). The commencement of August introduces an average high-temperature of a still warm 79.2°F (26.2°C), closely mirroring the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Cupertino, California, with temperature in the range of an average low of 55.8°F (13.2°C) and an average high of 77.5°F (25.3°C). The advent of September reveals an average high-temperature of a still moderately hot 77.5°F (25.3°C), showing minimal difference from the prior month. Weather in September »
Weather in October
October, the same as September, in Cupertino, California, is another pleasant autumn month, with an average temperature fluctuating between 71.6°F (22°C) and 53.8°F (12.1°C). During the shift to October, Cupertino records a mild decrease in average high-temperature, moving from a warm 77.5°F (25.3°C) in September to an agreeable 71.6°F (22°C). Weather in October »
Weather in November
November, the last month of the autumn in Cupertino, is another refreshing month, with an average temperature fluctuating between 48.4°F (9.1°C) and 63.9°F (17.7°C). Cupertino's November weather features a light decline in high-temperatures, reducing 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 also a moderate month, with an average temperature varying between 57°F (13.9°C) and 44.4°F (6.9°C). With average high temperatures of 57°F (13.9°C) and lows of 44.4°F (6.9°C), December is the coldest month. Weather in December »
[Resources]Frequently asked questions
How much does it rain in Cupertino?
In Cupertino, during the entire year, the rain falls for 53.6 days and collects up to 5.39" (137mm) of precipitation.
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, California.
What is the rainiest month in Cupertino?
February is the month with the most rainfall in Cupertino. Rain falls for 6 days and accumulates 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 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 in Cupertino?
With an average of 14h and 42min of daylight, June has the longest days of the year in Cupertino.
When is the highest UV index in Cupertino?
June is the month with the highest UV index in Cupertino, California, with an average maximum UV index of 6.
What is the hottest time of year in Cupertino?
July, known for its average high temperature of 79.3°F (26.3°C) and an average low temperature of 55°F (12.8°C), is the warmest month.
What are the least humid months in Cupertino?
July, September and October, with an average relative humidity of 64%, are the least humid months.
What is the driest month in Cupertino?
July and August are months with the least rain in Cupertino when the rain falls for 1.3 days and typically aggregates up to 0.04" (1mm) of rain.
What are the months with the most sunshine in Cupertino?
The months with the most sunshine in Cupertino are July and August, with an average of 12h of sunshine.
What time of the year is the coldest in Cupertino?
December is Cupertino's coldest month, registering average high temperatures of 57°F (13.9°C) and lows of 44.4°F (6.9°C).
What is the month with the shortest days in Cupertino?
December has the shortest days of the year in Cupertino, California, with an average of 9h and 36min of daylight.
What is the month with the least sunshine in Cupertino?
December has the least sunshine of the year, with an average of 5.9h of sunshine.
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 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 2min - Average daylight in August:
13h and 3min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
6h and 2min - Average sunshine in February:
6h and 2min - Average sunshine in March:
7h and 5min - Average sunshine in April:
10h and 2min - Average sunshine in May:
10h and 5min - Average sunshine in June:
11h and 5min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
11h and 1min - Average sunshine in October:
7h and 1min - Average sunshine in November:
6h and 4min - Average sunshine in December:
5h and 5min
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).
Cupertino, California, USA
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