Expand
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, in Portola Hills, California, is another enjoyable winter month, with an average temperature varying between 65.1°F (18.4°C) and 50°F (10°C). Portola Hills, California, marks the arrival of January with an average high-temperature of a still enjoyable 65.1°F (18.4°C), hardly different from December's 63.1°F (17.3°C). Weather in January »
Weather in February
February, the last month of the winter in Portola Hills, is also an enjoyable month, with an average temperature varying between 48.7°F (9.3°C) and 64.2°F (17.9°C). February's arrival brings an average high-temperature of a still enjoyable 64.2°F (17.9°C), slightly deviating from January's 65.1°F (18.4°C). Weather in February »
Weather in March
The first month of the spring, March, is still a refreshing month in Portola Hills, California, with temperature in the range of an average low of 50.2°F (10.1°C) and an average high of 66.2°F (19°C). The initiation of March sees an average high-temperature of a still comfortable 66.2°F (19°C), showing minor variations from the previous month. Weather in March »
Weather in April
April in Portola Hills, California, is an agreeable spring month, with an average temperature varying between 69.3°F (20.7°C) and 52.5°F (11.4°C). Portola Hills records a slight change with April's average high-temperatures adjusting to a pleasant 69.3°F (20.7°C) from March's 66.2°F (19°C). Weather in April »
Weather in May
The last month of the spring, May, is another pleasant month in Portola Hills, California, with an average temperature varying between 70.9°F (21.6°C) and 55.2°F (12.9°C). The beginning of May records an average high-temperature of a still agreeable 70.9°F (21.6°C), almost echoing the conditions of the previous month. Weather in May »
Weather in June
June, the first month of the summer in Portola Hills, is a warm month, with an average temperature varying between 57.7°F (14.3°C) and 75.4°F (24.1°C). Portola Hills's shift from May to June is accompanied by an average high-temperature of a warm 75.4°F (24.1°C), a slight deviation from 70.9°F (21.6°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Portola Hills, California, with an average temperature varying between 63°F (17.2°C) and 80.4°F (26.9°C). The transition into July reveals an average high-temperature of a still warm 80.4°F (26.9°C), mirroring a close resemblance to June. Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Portola Hills, California, with temperature in the range of an average low of 64.4°F (18°C) and an average high of 82°F (27.8°C). The warmest period is August, when temperatures fluctuate between an average high of 82°F (27.8°C) and a low of 64.4°F (18°C). Throughout August, the heat index is evaluated at 84.2°F (29°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Portola Hills, California, with an average temperature varying between 63.7°F (17.6°C) and 81°F (27.2°C). The shift into September reveals an average high-temperature of a still moderately hot 81°F (27.2°C), closely mirroring August's climate. Weather in September »
Weather in October
October, like September, in Portola Hills, California, is another warm autumn month, with an average temperature varying between 75.9°F (24.4°C) and 59.9°F (15.5°C). The shift into October finds Portola Hills at an average high-temperature of a still moderately hot 75.9°F (24.4°C), closely comparable to September's conditions. Weather in October »
Weather in November
The last month of the autumn, November, is another pleasant month in Portola Hills, California, with an average temperature varying between 70°F (21.1°C) and 54.7°F (12.6°C). Transition into November subtly marks a drop in the average high-temperature, moderately moving from a warm 75.9°F (24.4°C) in October to a pleasant 70°F (21.1°C). Weather in November »
Weather in December
The first month of the winter, December, is also an enjoyable month in Portola Hills, California, with an average temperature ranging between min 49.5°F (9.7°C) and max 63.1°F (17.3°C). Portola Hills experiences its lowest temperatures in December, with an average peak of 63.1°F (17.3°C) and a low of 49.5°F (9.7°C). Weather in December »
[Resources]Frequently asked questions
How many days does it rain in Portola Hills?
In Portola Hills, California, during the entire year, the rain falls for 65.4 days and collects up to 9.17" (233mm) of precipitation.
What is the month with the lowest UV index in Portola Hills?
The months with the lowest UV index in Portola Hills, California, are January through March, November and December, with an average maximum UV index of 4.
When is Daylight Saving Time (DST) in Portola Hills?
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.
What is the most humid month in Portola Hills?
May and June, with an average relative humidity of 69%, are most humid months in Portola Hills.
What is the driest month in Portola Hills?
The month with the least rainfall in Portola Hills, California, is June, when the rain falls for 2 days and typically collects 0.08" (2mm) of precipitation.
When are the longest days in Portola Hills?
With an average of 14h and 24min of daylight, June has the longest days of the year in Portola Hills.
What is the month with the highest UV index in Portola Hills?
The months with the highest UV index are June through September, with an average maximum UV index of 6.
What are the months with the most sunshine in Portola Hills?
July and August, with an average of 12h of sunshine, are months with the most sunshine in Portola Hills.
What part of the year is the hottest in Portola Hills?
August, marked by an average high-temperature of 82°F (27.8°C) and a low-temperature of 64.4°F (18°C), is the warmest month.
What is the least humid month in Portola Hills?
With an average relative humidity of 55%, November is the least humid month.
What month is the coldest in Portola Hills?
With average high temperatures of 63.1°F (17.3°C) and lows of 49.5°F (9.7°C), December is the coldest month.
What is the rainiest month in Portola Hills?
December is the month with the most rainfall in Portola Hills, California. Rain falls for 6.7 days and accumulates 1.85" (47mm) of precipitation.
What is the month with the shortest days in Portola Hills?
The month with the shortest days in Portola Hills is December, with an average of 10h and 0min of daylight.
What is the month with the least sunshine in Portola Hills?
With an average of 6.6h of sunshine, December has the least sunshine of the year in Portola Hills, California.
Average temperature
Portola Hills, CA
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (63.1°F).
The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).
Average pressure
Portola Hills, CA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.89"Hg - Average pressure in September:
29.88"Hg - Average pressure in October:
29.94"Hg - Average pressure in November:
30.02"Hg - Average pressure in December:
30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).
Average wind speed
Portola Hills, CA
- Average wind speed in January:
5mph - Average wind speed in February:
5.1mph - Average wind speed in March:
5.2mph - Average wind speed in April:
5.7mph - Average wind speed in May:
5.7mph - Average wind speed in June:
5mph
- Average wind speed in July:
4.8mph - Average wind speed in August:
4.5mph - Average wind speed in September:
4.5mph - Average wind speed in October:
4.6mph - Average wind speed in November:
4.8mph - Average wind speed in December:
5mph
The windiest months (with the highest average wind speed) are April and May (5.7mph).
The calmest months (with the lowest average wind speed) are August and September (4.5mph).
Average humidity
Portola Hills, CA
The months with the highest relative humidity are May and June (69%).
The month with the lowest relative humidity is November (55%).
Average rainfall
Portola Hills, CA
- Average rainfall in January:
1.3" - Average rainfall in February:
1.42" - Average rainfall in March:
1.06" - Average rainfall in April:
0.59" - Average rainfall in May:
0.39" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.47" - Average rainfall in August:
0.39" - Average rainfall in September:
0.31" - Average rainfall in October:
0.47" - Average rainfall in November:
0.83" - Average rainfall in December:
1.85"
The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days
Portola Hills, CA
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
6.4 days - Average rainfall days in March:
8.1 days - Average rainfall days in April:
7.2 days - Average rainfall days in May:
6.2 days - Average rainfall days in June:
2 days
- Average rainfall days in July:
5.3 days - Average rainfall days in August:
3.3 days - Average rainfall days in September:
4.6 days - Average rainfall days in October:
4.7 days - Average rainfall days in November:
5.3 days - Average rainfall days in December:
6.7 days
The month with the highest number of rainy days is March (8.1 days).
The month with the least rainy days is June (2 days).
Average daylight / Average sunshine
Portola Hills, CA
- Average daylight in January:
10h and 1min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
6h and 5min - Average sunshine in February:
6h and 4min - Average sunshine in March:
8h and 4min - Average sunshine in April:
10h and 5min - Average sunshine in May:
11h and 1min - 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:
10h and 4min - Average sunshine in October:
8h and 3min - Average sunshine in November:
7h and 1min - Average sunshine in December:
6h and 4min
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: 6h and 36min).
Average sunshine days
Portola Hills, CA
- Average sunshine days in January:
24.2 days - Average sunshine days in February:
19.7 days - Average sunshine days in March:
21.1 days - Average sunshine days in April:
20.6 days - Average sunshine days in May:
19.3 days - Average sunshine days in June:
22.3 days
- Average sunshine days in July:
22.3 days - Average sunshine days in August:
23.8 days - Average sunshine days in September:
21.8 days - Average sunshine days in October:
24.2 days - Average sunshine days in November:
23.6 days - Average sunshine days in December:
22.5 days
The months with the most sunshine days are January and October (24.2 days).
The month with the least sunshine days is May (19.3 days).
Average UV index
Portola Hills, CA
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover
Portola Hills, CA
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility
Portola Hills, 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).
Portola Hills, California, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location
