Monthly outlook for San Leandro, CA: average high 73.4°, average low 54.6°. That is 0.6° above the climate normal for October. Precipitation is expected on 1 day (about 0.3 inches), against a normal of 2 days and 0.6 inches. The warmest day looks like 16 October (84.1°), the coolest 13 October (48.6°).
73.4°/54.6°
Average high / low
+0.6°
Above normal
1 / 2
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
71.7°
73.3°
-0.9°
22 October – 31 October
76.2°
69.6°
+3.7°
1 November – 10 November
at normal
66.5°
—
October records over 66 years
100.6°6 October 2024All-time high
39.9°30 October 2023All-time low
Tue, 1375° / 49°0
75 °
San Leandro, Tuesday, 13 October
Clear. High 75°, low 49°.
Pressure30.06 inHg
Wind3.4 mph W
Humidity41%
Visibility6.2 mi
Dew point40°
Wed, 1473° / 50°0
73 °
San Leandro, Wednesday, 14 October
Clear. High 73°, low 50°.
Pressure30.12 inHg
Wind1.7 mph SW
Humidity49%
Visibility4.8 mi
Dew point47°
Thu, 1584° / 53°0
84 °
San Leandro, Thursday, 15 October
Clear. High 84°, low 53°.
Pressure30.09 inHg
Wind1.3 mph SW
Humidity35%
Visibility6.2 mi
Dew point41°
Fri, 1684° / 57°0
84 °
San Leandro, Friday, 16 October
Clear. High 84°, low 57°.
Pressure30.03 inHg
Wind1.3 mph SW
Humidity26%
Visibility6.2 mi
Dew point40°
Sat, 1773° / 58°0
73 °
San Leandro, Saturday, 17 October
Mostly clear. High 73°, low 58°.
Pressure30.00 inHg
Wind6.1 mph SW
Humidity57%
Visibility—
Dew point51°
Sun, 1868° / 55°0
68 °
San Leandro, Sunday, 18 October
Mostly clear. High 68°, low 55°.
Pressure30.00 inHg
Wind9.2 mph W
Humidity69%
Visibility—
Dew point53°
Mon, 1964° / 54°0.02
64 °
San Leandro, Monday, 19 October
Light rain. High 64°, low 54°.
Pressure30.03 inHg
Wind13.7 mph W
Humidity84%
Visibility—
Dew point55°
Tue, 2060° / 53°0.24
60 °
San Leandro, Tuesday, 20 October
Rain. High 60°, low 53°.
Pressure29.94 inHg
Wind9.2 mph NW
Humidity63%
Visibility—
Dew point44°
Wed, 2166° / 50°0
66 °
San Leandro, Wednesday, 21 October
Clear. High 66°, low 50°.
Pressure30.06 inHg
Wind8.8 mph NW
Humidity43%
Visibility—
Dew point38°
Thu, 2267° / 52°0
67 °
San Leandro, Thursday, 22 October
Clear. High 67°, low 52°.
Pressure30.21 inHg
Wind7 mph W
Humidity55%
Visibility—
Dew point45°
Fri, 2372° / 54°0
72 °
San Leandro, Friday, 23 October
Clear. High 72°, low 54°.
Pressure30.21 inHg
Wind9.7 mph NW
Humidity41%
Visibility—
Dew point41°
Sat, 2477° / 57°0
77 °
San Leandro, Saturday, 24 October
Clear. High 77°, low 57°.
Pressure30.21 inHg
Wind6.2 mph NE
Humidity30%
Visibility—
Dew point35°
Sun, 2579° / 59°0
79 °
San Leandro, Sunday, 25 October
Mostly clear. High 79°, low 59°.
Pressure30.09 inHg
Wind3.8 mph N
Humidity29%
Visibility—
Dew point37°
Mon, 2681° / 61°0
81 °
San Leandro, Monday, 26 October
Clear. High 81°, low 61°.
Pressure30.12 inHg
Wind4.5 mph W
Humidity27%
Visibility—
Dew point37°
Tue, 2782° / 62°0
82 °
San Leandro, Tuesday, 27 October
Clear. High 82°, low 62°.
Pressure30.12 inHg
Wind7.9 mph NW
Humidity26%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2868° / 52°0.07
68 °
San Leandro, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high68°
Average low52°
Average precipitation0.07 in
Chance of precipitation17%
Record high86° (2003)
Record low43° (1971)
Thu, 2968° / 51°0.05
68 °
San Leandro, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high68°
Average low51°
Average precipitation0.05 in
Chance of precipitation18%
Record high83° (1965)
Record low40° (1971)
Fri, 3067° / 51°0.05
67 °
San Leandro, Friday, 30 October
Climate normal for this date — 60-year average.
Average high67°
Average low51°
Average precipitation0.05 in
Chance of precipitation18%
Record high82° (1966)
Record low40° (2023)
Sat, 3169° / 51°0.02
69 °
San Leandro, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high69°
Average low51°
Average precipitation0.02 in
Chance of precipitation13%
Record high81° (1966)
Record low42° (2023)
Sun, 0169° / 51°0.04
69 °
San Leandro, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high69°
Average low51°
Average precipitation0.04 in
Chance of precipitation10%
Record high83° (1967)
Record low43° (2003)
Mon, 0269° / 51°0.03
69 °
San Leandro, Monday, 2 November
Climate normal for this date — 60-year average.
Average high69°
Average low51°
Average precipitation0.03 in
Chance of precipitation13%
Record high84° (1967)
Record low44° (1973)
Tue, 0368° / 51°0.03
68 °
San Leandro, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high68°
Average low51°
Average precipitation0.03 in
Chance of precipitation13%
Record high81° (1976)
Record low41° (1994)
Wed, 0467° / 51°0.03
67 °
San Leandro, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high67°
Average low51°
Average precipitation0.03 in
Chance of precipitation13%
Record high82° (1976)
Record low43° (2011)
Thu, 0566° / 51°0.05
66 °
San Leandro, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high66°
Average low51°
Average precipitation0.05 in
Chance of precipitation15%
Record high82° (1976)
Record low43° (2011)
Fri, 0666° / 51°0.05
66 °
San Leandro, Friday, 6 November
Climate normal for this date — 60-year average.
Average high66°
Average low51°
Average precipitation0.05 in
Chance of precipitation20%
Record high82° (1976)
Record low44° (1998)
Sat, 0766° / 51°0.06
66 °
San Leandro, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high66°
Average low51°
Average precipitation0.06 in
Chance of precipitation27%
Record high80° (1991)
Record low41° (2024)
Sun, 0865° / 50°0.07
65 °
San Leandro, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high65°
Average low50°
Average precipitation0.07 in
Chance of precipitation25%
Record high79° (1978)
Record low42° (1982)
Mon, 0964° / 49°0.08
64 °
San Leandro, Monday, 9 November
Climate normal for this date — 60-year average.
Average high64°
Average low49°
Average precipitation0.08 in
Chance of precipitation22%
Record high78° (1976)
Record low38° (2020)
Tue, 1064° / 49°0.11
64 °
San Leandro, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high64°
Average low49°
Average precipitation0.11 in
Chance of precipitation27%
Record high78° (1990)
Record low40° (2018)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for San Leandro, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in San Leandro, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.