Monthly outlook for South San Jose Hills, CA: average high 90.6°, average low 72.3°. That is 1.1° 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 20 August (97.2°), the coolest 14 August (67.4°).
90.6°/72.3°
Average high / low
+1.1°
Above normal
0 / 0
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
88.5°
88.9°
-0.2°
19 August – 28 August
94.2°
89.2°
+2.8°
29 August – 7 September
at normal
90.4°
—
August records over 66 years
108.7°18 August 2020All-time high
53.4°22 August 1968All-time low
Mon, 1096° / 69°0
96 °
South San Jose Hills, Monday, 10 August
Overcast. High 96°, low 69°.
Pressure29.91 inHg
Wind7.9 mph SW
Humidity36%
Visibility6.2 mi
Dew point58°
Tue, 1191° / 69°0
91 °
South San Jose Hills, Tuesday, 11 August
Overcast. High 91°, low 69°.
Pressure29.97 inHg
Wind6.3 mph SW
Humidity31%
Visibility6.2 mi
Dew point52°
Wed, 1289° / 73°0
89 °
South San Jose Hills, Wednesday, 12 August
Overcast. High 89°, low 73°.
Pressure29.88 inHg
Wind8 mph SW
Humidity34%
Visibility6.2 mi
Dew point54°
Thu, 1382° / 70°0
82 °
South San Jose Hills, Thursday, 13 August
Clear. High 82°, low 70°.
Pressure29.91 inHg
Wind8.7 mph SW
Humidity46%
Visibility6.2 mi
Dew point58°
Fri, 1484° / 67°0
84 °
South San Jose Hills, Friday, 14 August
Clear. High 84°, low 67°.
Pressure29.97 inHg
Wind9.8 mph SW
Humidity51%
Visibility—
Dew point56°
Sat, 1583° / 68°0
83 °
South San Jose Hills, Saturday, 15 August
Overcast. High 83°, low 68°.
Pressure30.06 inHg
Wind11.3 mph SW
Humidity51%
Visibility—
Dew point56°
Sun, 1686° / 71°0
86 °
South San Jose Hills, Sunday, 16 August
Clear. High 86°, low 71°.
Pressure30.06 inHg
Wind11.9 mph SW
Humidity50%
Visibility—
Dew point58°
Mon, 1789° / 70°0
89 °
South San Jose Hills, Monday, 17 August
Clear. High 89°, low 70°.
Pressure30.00 inHg
Wind11 mph SW
Humidity37%
Visibility—
Dew point51°
Tue, 1890° / 70°0
90 °
South San Jose Hills, Tuesday, 18 August
Clear. High 90°, low 70°.
Pressure29.94 inHg
Wind10.4 mph SW
Humidity38%
Visibility—
Dew point52°
Wed, 1994° / 73°0
94 °
South San Jose Hills, Wednesday, 19 August
Overcast. High 94°, low 73°.
Pressure29.91 inHg
Wind10.7 mph SW
Humidity34%
Visibility—
Dew point53°
Thu, 2097° / 78°0.01
97 °
South San Jose Hills, Thursday, 20 August
Light rain. High 97°, low 78°.
Pressure29.94 inHg
Wind9.4 mph SW
Humidity34%
Visibility—
Dew point55°
Fri, 2197° / 79°0.02
97 °
South San Jose Hills, Friday, 21 August
Light rain. High 97°, low 79°.
Pressure29.94 inHg
Wind10.6 mph SW
Humidity31%
Visibility—
Dew point55°
Sat, 2293° / 78°0
93 °
South San Jose Hills, Saturday, 22 August
Overcast. High 93°, low 78°.
Pressure29.88 inHg
Wind10.2 mph SW
Humidity33%
Visibility—
Dew point54°
Sun, 2390° / 75°0
90 °
South San Jose Hills, Sunday, 23 August
Clear. High 90°, low 75°.
Pressure29.91 inHg
Wind10.5 mph SW
Humidity40%
Visibility—
Dew point58°
Mon, 2495° / 75°0
95 °
South San Jose Hills, Monday, 24 August
Partly cloudy. High 95°, low 75°.
Pressure29.94 inHg
Wind10.7 mph SW
Humidity41%
Visibility—
Dew point58°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2590° / 65°0
90 °
South San Jose Hills, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high90°
Average low65°
Average precipitation0 in
Chance of precipitation2%
Record high105° (1985)
Record low58° (1978)
Wed, 2690° / 66°0
90 °
South San Jose Hills, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high90°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high105° (1981)
Record low58° (1990)
Thu, 2791° / 65°0
91 °
South San Jose Hills, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high91°
Average low65°
Average precipitation0 in
Chance of precipitation0%
Record high105° (1981)
Record low57° (1973)
Fri, 2892° / 66°0
92 °
South San Jose Hills, Friday, 28 August
Climate normal for this date — 60-year average.
Average high92°
Average low66°
Average precipitation0 in
Chance of precipitation0%
Record high104° (1981)
Record low58° (1973)
Sat, 2992° / 67°0
92 °
South San Jose Hills, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high92°
Average low67°
Average precipitation0 in
Chance of precipitation2%
Record high104° (1967)
Record low58° (2010)
Sun, 3091° / 67°0
91 °
South San Jose Hills, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high91°
Average low67°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2017)
Record low58° (2024)
Mon, 3190° / 66°0
90 °
South San Jose Hills, Monday, 31 August
Climate normal for this date — 60-year average.
Average high90°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high107° (2017)
Record low58° (1992)
Tue, 0190° / 65°0.03
90 °
South San Jose Hills, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high90°
Average low65°
Average precipitation0.03 in
Chance of precipitation3%
Record high106° (2017)
Record low57° (1964)
Wed, 0290° / 66°0.04
90 °
South San Jose Hills, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high90°
Average low66°
Average precipitation0.04 in
Chance of precipitation5%
Record high105° (1982)
Record low54° (1964)
Thu, 0390° / 66°0.01
90 °
South San Jose Hills, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high90°
Average low66°
Average precipitation0.01 in
Chance of precipitation5%
Record high108° (1988)
Record low57° (1964)
Fri, 0491° / 66°0
91 °
South San Jose Hills, Friday, 4 September
Climate normal for this date — 60-year average.
Average high91°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high111° (2022)
Record low58° (1964)
Sat, 0591° / 66°0.01
91 °
South San Jose Hills, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high91°
Average low66°
Average precipitation0.01 in
Chance of precipitation3%
Record high116° (2020)
Record low57° (1970)
Sun, 0691° / 66°0.01
91 °
South San Jose Hills, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high91°
Average low66°
Average precipitation0.01 in
Chance of precipitation3%
Record high117° (2024)
Record low57° (1970)
Mon, 0790° / 66°0
90 °
South San Jose Hills, Monday, 7 September
Climate normal for this date — 60-year average.
Average high90°
Average low66°
Average precipitation0 in
Chance of precipitation2%
Record high107° (2024)
Record low56° (1965)
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 South San Jose Hills, 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 South San Jose Hills, 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.