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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, like December, is another mild winter month in Millbrae, California, with an average temperature varying between 56.3°F (13.5°C) and 47.5°F (8.6°C). January's average high-temperature is a still moderate 56.3°F (13.5°C), maintaining a close comparison with December's 55.6°F (13.1°C). Weather in January »
Weather in February
February, the last month of the winter in Millbrae, is another refreshing month, with an average temperature varying between 57.6°F (14.2°C) and 47.8°F (8.8°C). With the onset of February, a modest change to a still moderate 57.6°F (14.2°C) from January's 56.3°F (13.5°C) is noted in high-temperature. Weather in February »
Weather in March
March, the first month of the spring in Millbrae, is still a mild month, with an average temperature varying between 58.8°F (14.9°C) and 48.2°F (9°C). During March, the average high-temperature is a still moderate 58.8°F (14.9°C), maintaining a close resemblance to that of the preceding month. Weather in March »
Weather in April
April in Millbrae, California, is a comfortable spring month, with an average temperature varying between 61.3°F (16.3°C) and 49.1°F (9.5°C). April's onset sees an average high-temperature of a comfortable 61.3°F (16.3°C), exhibiting a slight fluctuation from the previous month. Weather in April »
Weather in May
The last month of the spring, May, is another comfortable month in Millbrae, California, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 63.1°F (17.3°C). A minimal variation is noted in Millbrae's average high-temperature at the onset of May, reaching a still comfortable 63.1°F (17.3°C) from April's 61.3°F (16.3°C). Weather in May »
Weather in June
The first month of the summer, June, is still a comfortable month in Millbrae, California, with temperature in the range of an average high of 67.6°F (19.8°C) and an average low of 54°F (12.2°C). The transition into June marks the average high-temperature at a still refreshing 67.6°F (19.8°C), differing minimally from May's 63.1°F (17.3°C). Weather in June »
Weather in July
July in Millbrae, California, is a pleasant summer month, with an average temperature fluctuating between 69.6°F (20.9°C) and 55°F (12.8°C). July reports an average high-temperature of a pleasant 69.6°F (20.9°C), slightly varied from June's 67.6°F (19.8°C). Weather in July »
Weather in August
The last month of the summer, August, is also an agreeable month in Millbrae, California, with an average temperature ranging between min 56.5°F (13.6°C) and max 69.4°F (20.8°C). The start of August sees the average high-temperature at a still agreeable 69.4°F (20.8°C), showing little difference from July's 69.6°F (20.9°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Millbrae, California, with an average temperature fluctuating between 70.2°F (21.2°C) and 56.8°F (13.8°C). September, with its high-temperature average of 70.2°F (21.2°C) and a low-temperature average of 56.8°F (13.8°C), is the warmest month. Weather in September »
Weather in October
October, the same as September, is another enjoyable autumn month in Millbrae, California, with an average temperature fluctuating between 67.1°F (19.5°C) and 55.6°F (13.1°C). On the advent of October, Millbrae's average high-temperature exhibits a minor adjustment to a comfortable 67.1°F (19.5°C) from September's 70.2°F (21.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Millbrae, is another refreshing month, with an average temperature ranging between max 61.2°F (16.2°C) and min 51.8°F (11°C). In November, the average high-temperature marginally drops from an enjoyable 67.1°F (19.5°C) in October to a still refreshing 61.2°F (16.2°C). Weather in November »
Weather in December
December, the first month of the winter in Millbrae, is also a moderate month, with an average temperature ranging between min 47.8°F (8.8°C) and max 55.6°F (13.1°C). The lowest temperatures are recorded in December, with averages reaching a high of 55.6°F (13.1°C) and a low of 47.8°F (8.8°C). Weather in December »
[Resources]Frequently asked questions
How many days does it rain in Millbrae?
In Millbrae, California, during the entire year, the rain falls for 81.5 days and collects up to 12.8" (325mm) of precipitation.
What is the rainiest month in Millbrae?
The month with the most rainfall is February, when the rain falls for 9 days and typically aggregates up to 2.44" (62mm) of precipitation.
What are the months with the lowest UV index in Millbrae?
February and December, with an average maximum UV index of 3, are months with the lowest UV index.
When is Daylight Saving Time (DST) in Millbrae?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Millbrae, California, 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 Millbrae?
June has the longest days of the year, with an average of 14h and 42min of daylight.
When is the highest UV index in Millbrae?
June through September, with an average maximum UV index of 5, are months with the highest UV index in Millbrae, California.
What is the driest month in Millbrae?
July is the month with the least rainfall. Rain falls for 2.4 days and accumulates 0.08" (2mm) of precipitation.
What month has the most sunshine in Millbrae?
July has the most sunshine of the year in Millbrae, California, with an average of 11.8h of sunshine.
What is the most humid month in Millbrae?
The most humid month in Millbrae, California, is August, with an average relative humidity of 78%.
What is the warmest month in Millbrae?
September, on average, is the warmest month in Millbrae, registering a high temperature of 70.2°F (21.2°C) and a low of 56.8°F (13.8°C).
What is the least humid month in Millbrae?
October is the least humid month in Millbrae, with an average relative humidity of 70%.
What month is the coldest in Millbrae?
December stands out as Millbrae's coldest month, with temperatures ranging between an average high of 55.6°F (13.1°C) and a low of 47.8°F (8.8°C).
What is the month with the shortest days in Millbrae?
The month with the shortest days in Millbrae, California, is December, with an average of 9h and 36min of daylight.
What is the month with the least sunshine in Millbrae?
December has the least sunshine of the year in Millbrae, California, with an average of 5.8h of sunshine.
Average temperature
Millbrae, CA
The warmest month (with the highest average high temperature) is September (70.2°F).
The month with the lowest average high temperature is December (55.6°F).
The month with the highest average low temperature is September (56.8°F).
The coldest month (with the lowest average low temperature) is January (47.5°F).
Average pressure
Millbrae, CA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.07"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
Millbrae, CA
- Average wind speed in January:
6.5mph - Average wind speed in February:
7.7mph - Average wind speed in March:
8mph - Average wind speed in April:
8.3mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
6.2mph - Average wind speed in September:
6.1mph - Average wind speed in October:
6.4mph - Average wind speed in November:
6.4mph - Average wind speed in December:
7.2mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is September (6.1mph).
Average humidity
Millbrae, CA
The month with the highest relative humidity is August (78%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Millbrae, CA
- Average rainfall in January:
2.05" - Average rainfall in February:
2.44" - Average rainfall in March:
2.2" - Average rainfall in April:
0.67" - Average rainfall in May:
0.63" - Average rainfall in June:
0.16"
- Average rainfall in July:
0.08" - Average rainfall in August:
0.12" - Average rainfall in September:
0.16" - Average rainfall in October:
0.67" - Average rainfall in November:
1.46" - Average rainfall in December:
2.17"
The wettest month (with the highest rainfall) is February (2.44").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days
Millbrae, CA
- Average rainfall days in January:
10.4 days - Average rainfall days in February:
9 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
8.4 days - Average rainfall days in May:
5.7 days - Average rainfall days in June:
2.4 days
- Average rainfall days in July:
2.4 days - Average rainfall days in August:
3 days - Average rainfall days in September:
3.4 days - Average rainfall days in October:
5.2 days - Average rainfall days in November:
7.7 days - Average rainfall days in December:
11.1 days
The month with the highest number of rainy days is March (12.8 days).
The months with the least rainy days are June and July (2.4 days).
Average daylight / Average sunshine
Millbrae, 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 3min - Average daylight in August:
13h and 4min - 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 1min - 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 3min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
11h and 4min - Average sunshine in September:
10h and 5min - Average sunshine in October:
7h and 1min - Average sunshine in November:
6h and 4min - Average sunshine in December:
5h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days
Millbrae, CA
- Average sunshine days in January:
19.9 days - Average sunshine days in February:
18.2 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
20.1 days - Average sunshine days in May:
22.1 days - Average sunshine days in June:
23.7 days
- Average sunshine days in July:
24.6 days - Average sunshine days in August:
22.4 days - Average sunshine days in September:
23.2 days - Average sunshine days in October:
24.2 days - Average sunshine days in November:
21.5 days - Average sunshine days in December:
19.1 days
The month with the most sunshine days is July (24.6 days).
The month with the least sunshine days is March (16.3 days).
Average UV index
Millbrae, CA
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and December (UV index 3).
Average cloud cover
Millbrae, CA
The month with the most cloud cover is March (Cloud cover 36).
The months with the least cloud cover are July and September (Cloud cover 15).
Average visibility
Millbrae, 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).
Millbrae, California, USA
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