Climate and monthly weather forecastSan Leandro, CA
Climate and monthly weather forecast
Weather in January
January, like December, is another refreshing winter month in San Leandro, California, with an average temperature ranging between min 44.1°F (6.7°C) and max 56.8°F (13.8°C). With the onset of January, a modest change to a still refreshing 56.8°F (13.8°C) from December's 55.8°F (13.2°C) is noted in high-temperature. Weather in January »Weather in February
February, the last month of the winter in San Leandro, is another refreshing month, with an average temperature ranging between min 44.2°F (6.8°C) and max 58.8°F (14.9°C). San Leandro signifies an average high-temperature of a still mild 58.8°F (14.9°C) in February, closely mirroring the 56.8°F (13.8°C) of January. Weather in February »Weather in March
March, the first month of the spring in San Leandro, is a refreshing month, with an average temperature ranging between max 61.3°F (16.3°C) and min 45.1°F (7.3°C). San Leandro, California, sees the arrival of March with an average high-temperature of a comfortable 61.3°F (16.3°C), indicating a subtle variation from February. Weather in March »Weather in April
April, like March, in San Leandro, California, is another comfortable spring month, with an average temperature fluctuating between 46.9°F (8.3°C) and 65.3°F (18.5°C). The average high-temperature for April is a still refreshing 65.3°F (18.5°C), closely aligning with the temperature of the preceding month. Weather in April »Weather in May
May, the last month of the spring in San Leandro, is an agreeable month, with an average temperature varying between 68.9°F (20.5°C) and 49.6°F (9.8°C). San Leandro marks the onset of May with an average high-temperature of a pleasant 68.9°F (20.5°C), subtly divergent from April's 65.3°F (18.5°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in San Leandro, California, with an average temperature ranging between min 53.4°F (11.9°C) and max 75°F (23.9°C). San Leandro's transition into June is noticed by a slight rise in the average high-temperature, advancing from a pleasant 68.9°F (20.5°C) in May to a moderately hot 75°F (23.9°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in San Leandro, California, with an average temperature ranging between max 77.7°F (25.4°C) and min 54.9°F (12.7°C). The warmest period, with an average high-temperature of 77.7°F (25.4°C), falls in July and September. Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in San Leandro, California, with an average temperature varying between 77.5°F (25.3°C) and 55.9°F (13.3°C). The arrival of August brings an average high-temperature of a still warm 77.5°F (25.3°C), nearly identical to July's 77.7°F (25.4°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in San Leandro, California, with an average temperature fluctuating between 77.7°F (25.4°C) and 56.5°F (13.6°C). San Leandro witnesses its highest temperatures in July and September, reaching an average of 77.7°F (25.4°C). Weather in September »Weather in October
October, like September, is an agreeable autumn month in San Leandro, California, with an average temperature fluctuating between 71.4°F (21.9°C) and 54°F (12.2°C). October brings a minor shift in the average high-temperature, adjusting from a moderately hot 77.7°F (25.4°C) in September to an agreeable 71.4°F (21.9°C). Weather in October »Weather in November
The last month of the autumn, November, is another refreshing month in San Leandro, California, with an average temperature varying between 48.4°F (9.1°C) and 63.1°F (17.3°C). A minor decrease in the average high-temperature is observed during November, shifting from a pleasant 71.4°F (21.9°C) in October to a refreshing 63.1°F (17.3°C). Weather in November »Weather in December
December, the first month of the winter in San Leandro, is also a moderate month, with temperature in the range of an average low of 44.4°F (6.9°C) and an average high of 55.8°F (13.2°C). San Leandro's coldest weather arrives in December, when temperatures average a high of 55.8°F (13.2°C) and a low of 44.4°F (6.9°C). 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 San Leandro, there are 57.7 rainfall days, and 5.71" (145mm) of precipitation is accumulated.
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in San Leandro, California.
February is the month with the most rainfall. Rain falls for 6.3 days and accumulates 1.26" (32mm) of precipitation.
With an average relative humidity of 75%, March is the most humid month.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in San Leandro, 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.
The month with the longest days is June, with an average of 14h and 42min of daylight.
June is the month with the highest UV index, with an average maximum UV index of 6.
During July and September, San Leandro experiences its warmest period, with an average high-temperature of 77.7°F (25.4°C).
July through September are months with the least rain when the rain falls for 1.3 days and typically aggregates up to 0.04" (1mm) of rain.
The month with the most sunshine in San Leandro, California, is July, with an average of 12h of sunshine.
The months with the lowest humidity in San Leandro, California, are September and October, with an average relative humidity of 64%.
December is the month when San Leandro experiences its coldest temperatures, averaging a high of 55.8°F (13.2°C) and a low of 44.4°F (6.9°C).
The month with the shortest days in San Leandro is December, with an average of 9h and 36min of daylight.
The month with the least sunshine in San Leandro, California, is December, with an average of 5.9h of sunshine.
Average temperature
San Leandro, CA
The warmest months (with the highest average high temperature) are July and September (77.7°F).
The month with the lowest average high temperature is December (55.8°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 (44.1°F).
Average pressure
San Leandro, 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
San Leandro, CA
- Average wind speed in January:
5.1mph - Average wind speed in February:
6mph - Average wind speed in March:
6.3mph - Average wind speed in April:
6.6mph - Average wind speed in May:
7mph - Average wind speed in June:
6.5mph
- Average wind speed in July:
5.9mph - Average wind speed in August:
5.7mph - Average wind speed in September:
5.3mph - Average wind speed in October:
4.9mph - Average wind speed in November:
4.8mph - Average wind speed in December:
5.5mph
The windiest month (with the highest average wind speed) is May (7mph).
The calmest month (with the lowest average wind speed) is November (4.8mph).
Average humidity
San Leandro, CA
The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are September and October (64%).
Average rainfall
San Leandro, CA
- Average rainfall in January:
0.94" - Average rainfall in February:
1.26" - Average rainfall in March:
0.87" - Average rainfall in April:
0.24" - Average rainfall in May:
0.31" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.04" - Average rainfall in October:
0.28" - Average rainfall in November:
0.71" - Average rainfall in December:
0.91"
The wettest month (with the highest rainfall) is February (1.26").
The driest months (with the least rainfall) are July, August and September (0.04").
Average rainfall days
San Leandro, CA
- Average rainfall days in January:
8 days - Average rainfall days in February:
6.3 days - Average rainfall days in March:
10.2 days - Average rainfall days in April:
6 days - Average rainfall days in May:
4 days - Average rainfall days in June:
1.2 days
- Average rainfall days in July:
1.3 days - Average rainfall days in August:
0.7 days - Average rainfall days in September:
1.8 days - Average rainfall days in October:
3.8 days - Average rainfall days in November:
5.7 days - Average rainfall days in December:
8.7 days
The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is August (0.7 days).
Average daylight / Average sunshine
San Leandro, 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 12min - Average sunshine in March:
8h and 0min - Average sunshine in April:
10h and 30min - Average sunshine in May:
10h and 54min - Average sunshine in June:
11h and 48min
- 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 42min - 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
San Leandro, CA
- Average sunshine days in January:
22.2 days - Average sunshine days in February:
19.8 days - Average sunshine days in March:
19.1 days - Average sunshine days in April:
22.7 days - Average sunshine days in May:
23.9 days - Average sunshine days in June:
25.3 days
- Average sunshine days in July:
27.1 days - Average sunshine days in August:
26.2 days - Average sunshine days in September:
27 days - Average sunshine days in October:
25.9 days - Average sunshine days in November:
23 days - Average sunshine days in December:
20.6 days
The month with the most sunshine days is July (27.1 days).
The month with the least sunshine days is March (19.1 days).
Average UV index
San Leandro, 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
San Leandro, CA
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility
San Leandro, 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).
