Monthly outlook for Rodeo, CA: average high 75.6°, average low 59.9°. That is 3.7° 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 (92°), the coolest 8 August (57.9°).
75.6°/59.9°
Average high / low
−3.7°
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
74.4°
82.9°
-4.7°
18 August – 27 August
77.5°
81.7°
-2.3°
28 August – 6 September
at normal
83.8°
—
August records over 66 years
104.2°4 August 1998All-time high
49.1°10 August 1960All-time low
Climate normals and records are computed from the nearest reference point — Vallejo (5 mi).
Sun, 0992° / 60°0
92 °
Rodeo, Sunday, 9 August
Clear. High 92°, low 60°.
Pressure29.83 inHg
Wind4.2 mph SW
Humidity33%
Visibility6.2 mi
Dew point48°
Mon, 1072° / 60°0
72 °
Rodeo, Monday, 10 August
Clear. High 72°, low 60°.
Pressure29.88 inHg
Wind11.1 mph SW
Humidity55%
Visibility6.2 mi
Dew point53°
Tue, 1174° / 59°0
74 °
Rodeo, Tuesday, 11 August
Clear. High 74°, low 59°.
Pressure29.94 inHg
Wind8.4 mph SW
Humidity50%
Visibility6.2 mi
Dew point53°
Wed, 1271° / 59°0
71 °
Rodeo, Wednesday, 12 August
Partly cloudy. High 71°, low 59°.
Pressure29.85 inHg
Wind9.3 mph SW
Humidity56%
Visibility6.2 mi
Dew point54°
Thu, 1370° / 60°0
70 °
Rodeo, Thursday, 13 August
Partly cloudy. High 70°, low 60°.
Pressure29.85 inHg
Wind16.1 mph SW
Humidity60%
Visibility—
Dew point55°
Fri, 1469° / 61°0
69 °
Rodeo, Friday, 14 August
Overcast. High 69°, low 61°.
Pressure29.91 inHg
Wind11.3 mph SW
Humidity64%
Visibility—
Dew point55°
Sat, 1573° / 59°0
73 °
Rodeo, Saturday, 15 August
Clear. High 73°, low 59°.
Pressure30.00 inHg
Wind13.4 mph SW
Humidity51%
Visibility—
Dew point52°
Sun, 1675° / 59°0
75 °
Rodeo, Sunday, 16 August
Overcast. High 75°, low 59°.
Pressure30.00 inHg
Wind12.1 mph SW
Humidity43%
Visibility—
Dew point49°
Mon, 1772° / 61°0
72 °
Rodeo, Monday, 17 August
Overcast. High 72°, low 61°.
Pressure30.06 inHg
Wind13 mph SW
Humidity53%
Visibility—
Dew point53°
Tue, 1880° / 60°0
80 °
Rodeo, Tuesday, 18 August
Clear. High 80°, low 60°.
Pressure30.00 inHg
Wind9.3 mph S
Humidity35%
Visibility—
Dew point47°
Wed, 1980° / 61°0
80 °
Rodeo, Wednesday, 19 August
Clear. High 80°, low 61°.
Pressure29.97 inHg
Wind12.1 mph S
Humidity41%
Visibility—
Dew point49°
Thu, 2075° / 61°0
75 °
Rodeo, Thursday, 20 August
Clear. High 75°, low 61°.
Pressure29.91 inHg
Wind11.3 mph S
Humidity51%
Visibility—
Dew point54°
Fri, 2181° / 61°0
81 °
Rodeo, Friday, 21 August
Clear. High 81°, low 61°.
Pressure29.88 inHg
Wind9.4 mph S
Humidity38%
Visibility—
Dew point51°
Sat, 2279° / 62°0
79 °
Rodeo, Saturday, 22 August
Overcast. High 79°, low 62°.
Pressure29.83 inHg
Wind10.8 mph SW
Humidity42%
Visibility—
Dew point52°
Sun, 2370° / 59°0
70 °
Rodeo, Sunday, 23 August
Overcast. High 70°, low 59°.
Pressure29.88 inHg
Wind15.5 mph S
Humidity59%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2482° / 57°0
82 °
Rodeo, Monday, 24 August
Climate normal for this date — 60-year average.
Average high82°
Average low57°
Average precipitation0 in
Chance of precipitation2%
Record high103° (2010)
Record low51° (1970)
Tue, 2582° / 57°0
82 °
Rodeo, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high100° (1988)
Record low52° (1960)
Wed, 2683° / 56°0
83 °
Rodeo, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high83°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high100° (1988)
Record low51° (2005)
Thu, 2784° / 57°0
84 °
Rodeo, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high99° (2008)
Record low52° (1960)
Fri, 2884° / 57°0
84 °
Rodeo, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high102° (2008)
Record low51° (1960)
Sat, 2983° / 57°0
83 °
Rodeo, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high100° (1977)
Record low51° (1975)
Sun, 3083° / 57°0
83 °
Rodeo, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0 in
Chance of precipitation3%
Record high98° (1996)
Record low52° (1960)
Mon, 3183° / 57°0
83 °
Rodeo, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0 in
Chance of precipitation3%
Record high95° (1976)
Record low51° (1970)
Tue, 0185° / 57°0
85 °
Rodeo, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high85°
Average low57°
Average precipitation0 in
Chance of precipitation2%
Record high102° (2017)
Record low51° (1970)
Wed, 0284° / 57°0
84 °
Rodeo, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0 in
Chance of precipitation2%
Record high102° (2017)
Record low52° (1960)
Thu, 0383° / 57°0
83 °
Rodeo, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high98° (1963)
Record low49° (2000)
Fri, 0484° / 57°0
84 °
Rodeo, Friday, 4 September
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high98° (2008)
Record low50° (2000)
Sat, 0585° / 57°0
85 °
Rodeo, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high85°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high106° (2022)
Record low51° (2012)
Sun, 0684° / 57°0
84 °
Rodeo, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low57°
Average precipitation0 in
Chance of precipitation2%
Record high107° (2022)
Record low51° (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 Rodeo, 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 Rodeo, 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.