Monthly outlook for Alameda, CA: average high 72.3°, average low 58.2°. That is 3.1° below the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 9 August (80.8°), the coolest 11 August (57.1°).
72.3°/58.2°
Average high / low
−3.1°
Below normal
0 / 0
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
72.9°
78.3°
-3°
18 August – 27 August
71.3°
77.7°
-3.6°
28 August – 6 September
at normal
79.7°
—
August records over 66 years
100.9°24 August 2010All-time high
50.5°10 August 1960All-time low
Sun, 0981° / 58°0
81 °
Alameda, Sunday, 9 August
Clear. High 81°, low 58°.
Pressure29.83 inHg
Wind6.6 mph W
Humidity47%
Visibility6.2 mi
Dew point52°
Mon, 1072° / 57°0
72 °
Alameda, Monday, 10 August
Partly cloudy. High 72°, low 57°.
Pressure29.88 inHg
Wind7.8 mph W
Humidity56%
Visibility6.2 mi
Dew point53°
Tue, 1175° / 57°0
75 °
Alameda, Tuesday, 11 August
Clear. High 75°, low 57°.
Pressure29.94 inHg
Wind5.6 mph W
Humidity55%
Visibility6.2 mi
Dew point53°
Wed, 1275° / 57°0
75 °
Alameda, Wednesday, 12 August
Partly cloudy. High 75°, low 57°.
Pressure29.85 inHg
Wind4.6 mph W
Humidity59%
Visibility6.2 mi
Dew point54°
Thu, 1374° / 58°0
74 °
Alameda, Thursday, 13 August
Clear. High 74°, low 58°.
Pressure29.83 inHg
Wind12.9 mph W
Humidity56%
Visibility—
Dew point55°
Fri, 1469° / 60°0
69 °
Alameda, Friday, 14 August
Overcast. High 69°, low 60°.
Pressure29.91 inHg
Wind9.8 mph NW
Humidity64%
Visibility—
Dew point56°
Sat, 1570° / 58°0
70 °
Alameda, Saturday, 15 August
Clear. High 70°, low 58°.
Pressure30.03 inHg
Wind13.8 mph W
Humidity59%
Visibility—
Dew point54°
Sun, 1672° / 58°0
72 °
Alameda, Sunday, 16 August
Overcast. High 72°, low 58°.
Pressure30.03 inHg
Wind11.6 mph W
Humidity56%
Visibility—
Dew point54°
Mon, 1772° / 59°0
72 °
Alameda, Monday, 17 August
Overcast. High 72°, low 59°.
Pressure30.06 inHg
Wind12 mph W
Humidity58%
Visibility—
Dew point55°
Tue, 1873° / 57°0
73 °
Alameda, Tuesday, 18 August
Clear. High 73°, low 57°.
Pressure30.03 inHg
Wind9.5 mph W
Humidity50%
Visibility—
Dew point52°
Wed, 1970° / 58°0
70 °
Alameda, Wednesday, 19 August
Clear. High 70°, low 58°.
Pressure30.00 inHg
Wind10 mph W
Humidity58%
Visibility—
Dew point53°
Thu, 2071° / 59°0
71 °
Alameda, Thursday, 20 August
Clear. High 71°, low 59°.
Pressure29.94 inHg
Wind9.3 mph W
Humidity62%
Visibility—
Dew point56°
Fri, 2174° / 58°0
74 °
Alameda, Friday, 21 August
Clear. High 74°, low 58°.
Pressure29.88 inHg
Wind9.5 mph W
Humidity53%
Visibility—
Dew point54°
Sat, 2272° / 59°0
72 °
Alameda, Saturday, 22 August
Overcast. High 72°, low 59°.
Pressure29.85 inHg
Wind10.4 mph W
Humidity60%
Visibility—
Dew point56°
Sun, 2368° / 59°0
68 °
Alameda, Sunday, 23 August
Overcast. High 68°, low 59°.
Pressure29.91 inHg
Wind11.2 mph W
Humidity68%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2478° / 58°0
78 °
Alameda, Monday, 24 August
Climate normal for this date — 60-year average.
Average high78°
Average low58°
Average precipitation0 in
Chance of precipitation2%
Record high101° (2010)
Record low53° (1966)
Tue, 2578° / 58°0
78 °
Alameda, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high78°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high94° (1988)
Record low54° (2005)
Wed, 2678° / 57°0
78 °
Alameda, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high78°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high93° (1988)
Record low52° (2005)
Thu, 2780° / 58°0
80 °
Alameda, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high80°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high96° (1993)
Record low54° (2009)
Fri, 2880° / 58°0
80 °
Alameda, Friday, 28 August
Climate normal for this date — 60-year average.
Average high80°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high98° (2008)
Record low53° (1960)
Sat, 2979° / 58°0
79 °
Alameda, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high79°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high97° (1968)
Record low52° (1975)
Sun, 3078° / 58°0
78 °
Alameda, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high78°
Average low58°
Average precipitation0 in
Chance of precipitation5%
Record high92° (1968)
Record low53° (2010)
Mon, 3179° / 58°0
79 °
Alameda, Monday, 31 August
Climate normal for this date — 60-year average.
Average high79°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high91° (2005)
Record low52° (1970)
Tue, 0180° / 58°0
80 °
Alameda, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low58°
Average precipitation0 in
Chance of precipitation3%
Record high102° (2017)
Record low53° (1999)
Wed, 0280° / 58°0
80 °
Alameda, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2017)
Record low53° (1964)
Thu, 0380° / 58°0
80 °
Alameda, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high94° (2008)
Record low51° (2000)
Fri, 0480° / 58°0
80 °
Alameda, Friday, 4 September
Climate normal for this date — 60-year average.
Average high80°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high96° (2008)
Record low51° (2000)
Sat, 0580° / 58°0
80 °
Alameda, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high96° (2008)
Record low52° (2000)
Sun, 0680° / 58°0
80 °
Alameda, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2022)
Record low53° (1996)
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 Alameda, 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 Alameda, 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.