🇺🇸 Weather in San Leandro
Current Weather in San Leandro
Small Craft Advisory issued September 27 at 2:47AM PDT until September 28 at 3:00AM PDT by NWS San Francisco CA
18°C
Feels like 17°C. Sunny.
Map Overlays:
Hourly Forecast for San Leandro
13:00
19°
3%
14:00
18°
4%
15:00
17°
5%
16:00
17°
5%
17:00
17°
6%
18:00
16°
7%
19:00
14°
10%
20:00
13°
11%
21:00
13°
11%
22:00
13°
11%
23:00
13°
13%
00:00
13°
16%
01:00
13°
20%
02:00
13°
25%
03:00
14°
23%
04:00
14°
21%
05:00
14°
17%
06:00
14°
12%
07:00
13°
10%
08:00
14°
9%
09:00
15°
6%
10:00
17°
4%
11:00
18°
3%
12:00
19°
3%
14-Day Forecast for San Leandro
2026-09-27
Sunny
19° /
13°
2026-09-28
Sunny
20° /
13°
2026-09-29
Sunny
23° /
14°
2026-09-30
Sunny
26° /
16°
2026-10-01
Sunny
25° /
14°
2026-10-02
Overcast
23° /
15°
2026-10-03
Sunny
30° /
16°
Additional Forecasts for San Leandro
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 118.0 μg/m³
O₃ (Ozone) 82.0 μg/m³
NO₂ (Nitrogen Dioxide) 2.5 μg/m³
SO₂ (Sulphur Dioxide) 1.3 μg/m³
PM2.5 (Fine particles) 9.2 μg/m³
PM10 (Coarse particles) 13.2 μg/m³
Historical Weather
Weather Forecasts for Other Cities in United States
Weather in San Leandro — FAQ
Answers refreshed each request based on current conditions in San Leandro.
What is the weather like right now in San Leandro?
Right now in San Leandro, United States the temperature is 18.3°C (feels like 16.9°C), with sunny. Relative humidity is 60% and wind is 8.3 km/h.
What is today's high and low temperature in San Leandro?
Today's forecast high in San Leandro is 19.1°C and the overnight low is 13.1°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in San Leandro today?
The chance of precipitation in San Leandro today is 13%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in San Leandro differ from nearby cities?
Even short distances can change temperatures noticeably. San Leandro's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.