Climate and monthly weather forecastActon, CA
Climate and monthly weather forecast
Weather in January
January, like December, is another mild winter month in Acton, California, with an average temperature fluctuating between 57.9°F (14.4°C) and 40.6°F (4.8°C). Acton commences January with an average high-temperature of a still refreshing 57.9°F (14.4°C), maintaining a close resemblance to the previous month. Weather in January »Weather in February
February, the last month of the winter in Acton, is another refreshing month, with temperature in the range of an average high of 58.5°F (14.7°C) and an average low of 40.3°F (4.6°C). The beginning of February reveals an average high-temperature of a still mild 58.5°F (14.7°C), showing minimal deviation from the previous month. Weather in February »Weather in March
March, the first month of the spring in Acton, is an enjoyable month, with an average temperature ranging between max 63.1°F (17.3°C) and min 42.6°F (5.9°C). The arrival of March sees an average high-temperature of a still refreshing 63.1°F (17.3°C), hardly diverging from February's 58.5°F (14.7°C). Weather in March »Weather in April
April is a pleasant spring month in Acton, California, with an average temperature fluctuating between 45.7°F (7.6°C) and 68.5°F (20.3°C). In Acton, stepping into April brings a gentle temperature nudge, moving slightly up from March's enjoyable 63.1°F (17.3°C) to an agreeable 68.5°F (20.3°C). Weather in April »Weather in May
May, the last month of the spring in Acton, is a warm month, with an average temperature ranging between min 50.4°F (10.2°C) and max 74.1°F (23.4°C). As Acton transitions into May, a marginal rise in the average high-temperature is observed, moving from an agreeable 68.5°F (20.3°C) in April to a warm 74.1°F (23.4°C). Weather in May »Weather in June
The first month of the summer, June, is still a warm month in Acton, California, with an average temperature varying between 83.3°F (28.5°C) and 56.5°F (13.6°C). The beginning of June signals a rise in the average high-temperature, moving from a warm 74.1°F (23.4°C) in May to a still moderately hot 83.3°F (28.5°C). Weather in June »Weather in July
July is a hot summer month in Acton, California, with an average temperature ranging between max 88.9°F (31.6°C) and min 62.2°F (16.8°C). The shift into July is characterized by a subtle rise in the average high-temperature, transitioning from June's moderately hot 83.3°F (28.5°C) to a hot 88.9°F (31.6°C). Weather in July »Weather in August
The last month of the summer, August, is another hot month in Acton, California, with temperature in the range of an average high of 89.2°F (31.8°C) and an average low of 63.1°F (17.3°C). August, recognised by an average high temperature of 89.2°F (31.8°C) and a low of 63.1°F (17.3°C), is Acton's warmest month. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Acton, California, with temperature in the range of an average high of 84.9°F (29.4°C) and an average low of 60.3°F (15.7°C). The onset of September brings with it an average high-temperature of a warm 84.9°F (29.4°C), showing a negligible variation from the month before. Weather in September »Weather in October
October, the same as September, is a moderately hot autumn month in Acton, California, with temperature in the range of an average high of 74.3°F (23.5°C) and an average low of 52.9°F (11.6°C). October's arrival correlates with a reduction in the average high-temperature, down from 84.9°F (29.4°C) in September to a still warm 74.3°F (23.5°C). Weather in October »Weather in November
November, the last month of the autumn in Acton, is another refreshing month, with an average temperature varying between 45.5°F (7.5°C) and 64.6°F (18.1°C). The onset of November results in a decrease in the average high-temperature, receding from a warm 74.3°F (23.5°C) in October to a comfortable 64.6°F (18.1°C). Weather in November »Weather in December
December, the first month of the winter in Acton, is also a moderate month, with an average temperature ranging between max 55.6°F (13.1°C) and min 39.2°F (4°C). December, noted for its average high-temperature of 55.6°F (13.1°C) and an average low-temperature of 39.2°F (4°C), is considered the coldest month. Weather in December »Updated: Feb 9, 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, in Acton, there are 51.4 rainfall days, and 7.6" (193mm) of precipitation is accumulated.
Months with snowfall in Acton, California, are January through April, November and December.
In Acton, California, during the entire year, snow falls for 1.9 days and aggregates up to 5.98" (152mm) of snow.
The month with the least sunshine in Acton, California, is January, with an average of 6.7h of sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3.
February, March and December, with an average relative humidity of 54%, are most humid months.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Acton, 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.
In Acton, snow does not fall in May through October.
The month with the least rainfall in Acton is June, when the rain falls for 1.2 days and typically collects 0.04" (1mm) of precipitation.
The month with the longest days in Acton, California, is June, with an average of 14h and 24min of daylight.
June through September, with an average maximum UV index of 6, are months with the highest UV index in Acton.
With an average of 12.1h of sunshine, July has the most sunshine of the year.
In Acton, the average temperatures in August are the highest, with a peak at 89.2°F (31.8°C) and a low of 63.1°F (17.3°C).
August is the least humid month in Acton, California, with an average relative humidity of 38%.
December is the coldest month, exhibiting average temperatures of 55.6°F (13.1°C) at the peak and 39.2°F (4°C) at the base.
The month with the most rainfall in Acton, California, is December, when the rain falls for 6.3 days and typically aggregates up to 1.65" (42mm) of precipitation.
The month with the most snowfall is December, when snow falls for 0.2 days and typically aggregates up to 3.23" (82mm) of snow.
With an average of 9h and 54min of daylight, December has the shortest days of the year.
Average temperature
Acton, CA
The warmest month (with the highest average high temperature) is August (89.2°F).
The month with the lowest average high temperature is December (55.6°F).
The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is December (39.2°F).
Average pressure
Acton, CA
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.05"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.9"Hg - Average pressure in August:
29.89"Hg - Average pressure in September:
29.89"Hg - Average pressure in October:
29.95"Hg - Average pressure in November:
30.04"Hg - Average pressure in December:
30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed
Acton, CA
- Average wind speed in January:
7.2mph - Average wind speed in February:
7.1mph - Average wind speed in March:
7.2mph - Average wind speed in April:
7.6mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.8mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
5.9mph - Average wind speed in September:
5.7mph - Average wind speed in October:
6.6mph - Average wind speed in November:
6.8mph - Average wind speed in December:
7.1mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).
Average humidity
Acton, CA
The months with the highest relative humidity are February, March and December (54%).
The month with the lowest relative humidity is August (38%).
Average rainfall
Acton, CA
- Average rainfall in January:
1.14" - Average rainfall in February:
1.18" - Average rainfall in March:
1.02" - Average rainfall in April:
0.55" - Average rainfall in May:
0.16" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.24" - Average rainfall in September:
0.2" - Average rainfall in October:
0.31" - Average rainfall in November:
0.67" - Average rainfall in December:
1.65"
The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days
Acton, CA
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
7.4 days - Average rainfall days in April:
5 days - Average rainfall days in May:
3.4 days - Average rainfall days in June:
1.2 days
- Average rainfall days in July:
4.7 days - Average rainfall days in August:
3.1 days - Average rainfall days in September:
3 days - Average rainfall days in October:
2.9 days - Average rainfall days in November:
3.5 days - Average rainfall days in December:
6.3 days
The month with the highest number of rainy days is March (7.4 days).
The month with the least rainy days is June (1.2 days).
Average snowfall
Acton, CA
The month with the highest snowfall is December (3.23").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Acton, CA
- Average snowfall days in January:
0.3 days - Average snowfall days in February:
0.8 days - Average snowfall days in March:
0.2 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.2 days - Average snowfall days in December:
0.2 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Acton, CA
- Average daylight in January:
10h and 12min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 24min
- Average daylight in July:
14h and 12min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - Average daylight in December:
9h and 54min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January:
6h and 42min - Average sunshine in February:
6h and 48min - Average sunshine in March:
8h and 48min - Average sunshine in April:
11h and 18min - Average sunshine in May:
11h and 48min - Average sunshine in June:
12h and 0min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 48min - Average sunshine in October:
8h and 30min - Average sunshine in November:
7h and 12min - Average sunshine in December:
6h and 48min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 42min).
Average sunshine days
Acton, CA
- Average sunshine days in January:
24.8 days - Average sunshine days in February:
21.3 days - Average sunshine days in March:
23.3 days - Average sunshine days in April:
24.8 days - Average sunshine days in May:
26.8 days - Average sunshine days in June:
28.3 days
- Average sunshine days in July:
24.4 days - Average sunshine days in August:
26.5 days - Average sunshine days in September:
26.3 days - Average sunshine days in October:
27.1 days - Average sunshine days in November:
25 days - Average sunshine days in December:
23.6 days
The month with the most sunshine days is June (28.3 days).
The month with the least sunshine days is February (21.3 days).
Average UV index
Acton, 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, November and December (UV index 3).
Average cloud cover
Acton, 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 5).
Average visibility
Acton, 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).
