Monthly outlook for Sunol, CA: average high 86.9°, average low 59.6°. That is 2.4° above 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 21 August (91.4°), the coolest 16 August (57.2°).
86.9°/59.6°
Average high / low
+2.4°
Above 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
87.2°
83.4°
+2.1°
18 August – 27 August
86.4°
81.9°
+2.5°
28 August – 6 September
at normal
83.6°
—
August records over 66 years
105.6°4 August 1998All-time high
48.4°23 August 1973All-time low
Climate normals and records are computed from the nearest reference point — Milpitas (11 mi).
Sun, 0991° / 61°0
91 °
Sunol, Sunday, 9 August
Clear. High 91°, low 61°.
Pressure29.80 inHg
Wind6.3 mph W
Humidity16%
Visibility6.2 mi
Dew point41°
Mon, 1090° / 61°0
90 °
Sunol, Monday, 10 August
Overcast. High 90°, low 61°.
Pressure29.85 inHg
Wind7 mph W
Humidity22%
Visibility6.2 mi
Dew point44°
Tue, 1190° / 61°0
90 °
Sunol, Tuesday, 11 August
Clear. High 90°, low 61°.
Pressure29.91 inHg
Wind6.7 mph W
Humidity21%
Visibility6.2 mi
Dew point43°
Wed, 1291° / 62°0
91 °
Sunol, Wednesday, 12 August
Partly cloudy. High 91°, low 62°.
Pressure29.85 inHg
Wind6.5 mph SW
Humidity24%
Visibility6.2 mi
Dew point45°
Thu, 1388° / 60°0
88 °
Sunol, Thursday, 13 August
Partly cloudy. High 88°, low 60°.
Pressure29.80 inHg
Wind8.7 mph SW
Humidity24%
Visibility—
Dew point44°
Fri, 1483° / 61°0
83 °
Sunol, Friday, 14 August
Overcast. High 83°, low 61°.
Pressure29.91 inHg
Wind7.5 mph SW
Humidity34%
Visibility—
Dew point47°
Sat, 1585° / 57°0
85 °
Sunol, Saturday, 15 August
Clear. High 85°, low 57°.
Pressure29.97 inHg
Wind10 mph W
Humidity26%
Visibility—
Dew point43°
Sun, 1686° / 57°0
86 °
Sunol, Sunday, 16 August
Overcast. High 86°, low 57°.
Pressure30.00 inHg
Wind8.7 mph W
Humidity21%
Visibility—
Dew point39°
Mon, 1784° / 60°0
84 °
Sunol, Monday, 17 August
Overcast. High 84°, low 60°.
Pressure30.06 inHg
Wind8.1 mph W
Humidity24%
Visibility—
Dew point41°
Tue, 1887° / 59°0
87 °
Sunol, Tuesday, 18 August
Clear. High 87°, low 59°.
Pressure30.00 inHg
Wind8.9 mph W
Humidity18%
Visibility—
Dew point36°
Wed, 1984° / 57°0
84 °
Sunol, Wednesday, 19 August
Clear. High 84°, low 57°.
Pressure29.97 inHg
Wind9.4 mph W
Humidity24%
Visibility—
Dew point41°
Thu, 2084° / 58°0
84 °
Sunol, Thursday, 20 August
Clear. High 84°, low 58°.
Pressure29.91 inHg
Wind8.9 mph W
Humidity33%
Visibility—
Dew point49°
Fri, 2191° / 60°0
91 °
Sunol, Friday, 21 August
Clear. High 91°, low 60°.
Pressure29.85 inHg
Wind8.7 mph W
Humidity21%
Visibility—
Dew point43°
Sat, 2289° / 62°0
89 °
Sunol, Saturday, 22 August
Overcast. High 89°, low 62°.
Pressure29.83 inHg
Wind8.2 mph W
Humidity26%
Visibility—
Dew point47°
Sun, 2383° / 58°0
83 °
Sunol, Sunday, 23 August
Overcast. High 83°, low 58°.
Pressure29.85 inHg
Wind9.2 mph W
Humidity32%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2483° / 60°0
83 °
Sunol, Monday, 24 August
Climate normal for this date — 60-year average.
Average high83°
Average low60°
Average precipitation0 in
Chance of precipitation2%
Record high104° (2010)
Record low53° (1963)
Tue, 2582° / 60°0
82 °
Sunol, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low60°
Average precipitation0 in
Chance of precipitation0%
Record high99° (1988)
Record low54° (1963)
Wed, 2683° / 59°0
83 °
Sunol, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low59°
Average precipitation0 in
Chance of precipitation0%
Record high97° (1988)
Record low53° (1970)
Thu, 2784° / 61°0
84 °
Sunol, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low61°
Average precipitation0 in
Chance of precipitation0%
Record high98° (1993)
Record low52° (1960)
Fri, 2885° / 61°0
85 °
Sunol, Friday, 28 August
Climate normal for this date — 60-year average.
Average high85°
Average low61°
Average precipitation0 in
Chance of precipitation0%
Record high100° (2009)
Record low53° (1969)
Sat, 2983° / 61°0
83 °
Sunol, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low61°
Average precipitation0 in
Chance of precipitation2%
Record high100° (2009)
Record low52° (1980)
Sun, 3082° / 60°0
82 °
Sunol, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low60°
Average precipitation0 in
Chance of precipitation2%
Record high97° (2007)
Record low51° (2010)
Mon, 3183° / 60°0
83 °
Sunol, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low60°
Average precipitation0 in
Chance of precipitation0%
Record high96° (1998)
Record low53° (2008)
Tue, 0184° / 60°0
84 °
Sunol, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low60°
Average precipitation0 in
Chance of precipitation2%
Record high108° (2017)
Record low52° (1964)
Wed, 0284° / 62°0
84 °
Sunol, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high109° (2017)
Record low52° (1960)
Thu, 0383° / 61°0
83 °
Sunol, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low61°
Average precipitation0 in
Chance of precipitation0%
Record high100° (2017)
Record low53° (1995)
Fri, 0483° / 61°0
83 °
Sunol, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low61°
Average precipitation0 in
Chance of precipitation0%
Record high101° (1988)
Record low52° (1960)
Sat, 0584° / 61°0
84 °
Sunol, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high84°
Average low61°
Average precipitation0 in
Chance of precipitation0%
Record high101° (2022)
Record low52° (1996)
Sun, 0684° / 62°0
84 °
Sunol, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low62°
Average precipitation0 in
Chance of precipitation0%
Record high113° (2022)
Record low53° (1973)
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 Sunol, 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 Sunol, 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.