Climate and monthly weather forecastAlameda, CA
Climate and monthly weather forecast
Weather in January
January, like December, is another refreshing winter month in Alameda, California, with temperature in the range of an average high of 56.7°F (13.7°C) and an average low of 45°F (7.2°C). As January unfolds, the average high-temperature reaches a still moderate 56.7°F (13.7°C), hinting at a slight fluctuation from the previous month. Weather in January »Weather in February
February, the last month of the winter in Alameda, is also a moderate month, with an average temperature ranging between max 58.6°F (14.8°C) and min 45.1°F (7.3°C). The transition into February notes an average high-temperature of a still moderate 58.6°F (14.8°C), revealing a mild distinction from the 56.7°F (13.7°C) in January. Weather in February »Weather in March
March, the first month of the spring in Alameda, is still a refreshing month, with an average temperature varying between 60.6°F (15.9°C) and 46°F (7.8°C). Alameda, California, indicates an average high-temperature of a still moderate 60.6°F (15.9°C) in March, showing minor variation from February's 58.6°F (14.8°C). Weather in March »Weather in April
April is a comfortable spring month in Alameda, California, with an average temperature ranging between min 47.3°F (8.5°C) and max 64.6°F (18.1°C). Alameda indicates an average high-temperature of a comfortable 64.6°F (18.1°C) in April, showing minor variation from March's 60.6°F (15.9°C). Weather in April »Weather in May
The last month of the spring, May, is another comfortable month in Alameda, California, with an average temperature varying between 50.2°F (10.1°C) and 67.6°F (19.8°C). Alameda registers an average high-temperature of a still comfortable 67.6°F (19.8°C) with the arrival of May, showing minor deviation from the preceding month. Weather in May »Weather in June
The first month of the summer, June, is a pleasant month in Alameda, California, with temperature in the range of an average low of 53.4°F (11.9°C) and an average high of 73°F (22.8°C). Observing a minor shift, the average high-temperature during June adjusts from May's enjoyable 67.6°F (19.8°C) to an agreeable 73°F (22.8°C). Weather in June »Weather in July
July in Alameda, California, is a moderately hot summer month, with temperature in the range of an average high of 75.4°F (24.1°C) and an average low of 54.7°F (12.6°C). Transitioning into July, Alameda records an average high-temperature of a moderately hot 75.4°F (24.1°C), almost identical to June's 73°F (22.8°C). Weather in July »Weather in August
August, the last month of the summer in Alameda, is another warm month, with an average temperature varying between 75.6°F (24.2°C) and 56.1°F (13.4°C). Alameda measures an average high-temperature of a still moderately hot 75.6°F (24.2°C) in August, nearly consistent with the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Alameda, is also a moderately hot month, with an average temperature fluctuating between 75.9°F (24.4°C) and 56.5°F (13.6°C). Alameda's warmest month, September, generally records average temperatures ranging from a high of 75.9°F (24.4°C) to a low of 56.5°F (13.6°C). Weather in September »Weather in October
October, like September, is another pleasant autumn month in Alameda, California, with an average temperature ranging between min 54.5°F (12.5°C) and max 70.2°F (21.2°C). Alameda's weather subtly changes with the onset of October, barely falling from a moderately hot 75.9°F (24.4°C) in September to a pleasant 70.2°F (21.2°C). Weather in October »Weather in November
The last month of the autumn, November, is another comfortable month in Alameda, California, with temperature in the range of an average high of 62.2°F (16.8°C) and an average low of 49.3°F (9.6°C). Alameda's weather subtly changes with the onset of November, barely falling from a pleasant 70.2°F (21.2°C) in October to a comfortable 62.2°F (16.8°C). Weather in November »Weather in December
The first month of the winter, December, is still a mild month in Alameda, California, with an average temperature varying between 45.1°F (7.3°C) and 55.9°F (13.3°C). December, known for its average high temperature of 55.9°F (13.3°C) and an average low temperature of 45.1°F (7.3°C), is the coldest month. Weather in December »Updated: Jul 23, 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 Alameda, there are 67.2 rainfall days, and 6.1" (155mm) of precipitation is accumulated.
The months with the lowest UV index are January, November and December, with an average maximum UV index of 3.
The month with the most rainfall is February, when the rain falls for 7.3 days and typically aggregates up to 1.18" (30mm) of precipitation.
March is the most humid month, with an average relative humidity of 75%.
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.
The months with the coldest seawater in Alameda are April through June, with an average ocean temperature of 53.1°F (11.7°C).
April through September, with an average maximum UV index of 5, are months with the highest UV index.
June has the longest days of the year, with an average of 14h and 42min of daylight.
July is the month with the least rainfall. Rain falls for 1.8 days and accumulates 0.04" (1mm) of precipitation.
The month with the most sunshine is July, with an average of 12h of sunshine.
Alameda experiences its highest temperatures in September, with an average peak of 75.9°F (24.4°C) and a low of 56.5°F (13.6°C).
The month with the warmest seawater is September, with an average ocean temperature of 57.4°F (14.1°C).
With an average relative humidity of 65%, October is the least humid month.
December, with average temperatures reaching a high of 55.9°F (13.3°C) and a low of 45.1°F (7.3°C), is the coldest month.
December has the shortest days of the year, with an average of 9h and 36min of daylight.
December has the least sunshine of the year, with an average of 5.9h of sunshine.
Average temperature
Alameda, CA
The warmest month (with the highest average high temperature) is September (75.9°F).
The month with the lowest average high temperature is December (55.9°F).
The month with the highest average low temperature is September (56.5°F).
The coldest month (with the lowest average low temperature) is January (45°F).
Average pressure
Alameda, 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:
30.03"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"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 months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed
Alameda, CA
- Average wind speed in January:
5.3mph - Average wind speed in February:
6.3mph - Average wind speed in March:
6.6mph - Average wind speed in April:
6.9mph - Average wind speed in May:
7.2mph - Average wind speed in June:
6.7mph
- Average wind speed in July:
6mph - Average wind speed in August:
5.8mph - Average wind speed in September:
5.4mph - Average wind speed in October:
5.2mph - Average wind speed in November:
5.2mph - Average wind speed in December:
5.8mph
The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest months (with the lowest average wind speed) are October and November (5.2mph).
Average humidity
Alameda, CA
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (65%).
Average rainfall
Alameda, CA
- Average rainfall in January:
1.02" - Average rainfall in February:
1.18" - Average rainfall in March:
0.98" - Average rainfall in April:
0.28" - Average rainfall in May:
0.31" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.08" - Average rainfall in September:
0.08" - Average rainfall in October:
0.31" - Average rainfall in November:
0.71" - Average rainfall in December:
1.02"
The wettest month (with the highest rainfall) is February (1.18").
The driest month (with the least rainfall) is July (0.04").
Average rainfall days
Alameda, CA
- Average rainfall days in January:
9 days - Average rainfall days in February:
7.3 days - Average rainfall days in March:
11.4 days - Average rainfall days in April:
6.7 days - Average rainfall days in May:
4.8 days - Average rainfall days in June:
1.5 days
- Average rainfall days in July:
1.8 days - Average rainfall days in August:
1.3 days - Average rainfall days in September:
2.6 days - Average rainfall days in October:
4.5 days - Average rainfall days in November:
6.1 days - Average rainfall days in December:
10.2 days
The month with the highest number of rainy days is March (11.4 days).
The month with the least rainy days is August (1.3 days).
Average sea temperature
Alameda, CA
The best month for swimming (with the highest average sea temperature) is September (57.3°F).
The coldest months (with the lowest average sea temperature) are April and June (53°F).
Average daylight / Average sunshine
Alameda, CA
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 36min
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 12min - Average sunshine in February:
6h and 18min - Average sunshine in March:
7h and 54min - Average sunshine in April:
10h and 30min - Average sunshine in May:
10h and 48min - Average sunshine in June:
11h and 42min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 54min - 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 month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days
Alameda, CA
- Average sunshine days in January:
20.9 days - Average sunshine days in February:
18.8 days - Average sunshine days in March:
17.3 days - Average sunshine days in April:
21.8 days - Average sunshine days in May:
22.3 days - Average sunshine days in June:
24.3 days
- Average sunshine days in July:
25.4 days - Average sunshine days in August:
23.8 days - Average sunshine days in September:
24.5 days - Average sunshine days in October:
24.8 days - Average sunshine days in November:
22.5 days - Average sunshine days in December:
19.4 days
The month with the most sunshine days is July (25.4 days).
The month with the least sunshine days is March (17.3 days).
Average UV index
Alameda, CA
The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, November and December (UV index 3).
Average cloud cover
Alameda, CA
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility
Alameda, 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).
