Monthly outlook for Cotati, CA: average high 86.4°, average low 55.1°. That is 3.4° 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 (91.8°), the coolest 16 August (51.9°).
86.4°/55.1°
Average high / low
+3.4°
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
85.8°
80.9°
+2.7°
18 August – 27 August
87.3°
79.6°
+4.2°
28 August – 6 September
at normal
81.6°
—
August records over 66 years
99.9°24 August 2010All-time high
48.4°10 August 1960All-time low
Climate normals and records are computed from the nearest reference point — Rohnert Park (2 mi).
Sun, 0990° / 59°0
90 °
Cotati, Sunday, 9 August
Clear. High 90°, low 59°.
Pressure29.80 inHg
Wind5.7 mph W
Humidity16%
Visibility6.2 mi
Dew point42°
Mon, 1090° / 55°0
90 °
Cotati, Monday, 10 August
Overcast. High 90°, low 55°.
Pressure29.83 inHg
Wind5.8 mph SW
Humidity24%
Visibility6.2 mi
Dew point48°
Tue, 1191° / 53°0
91 °
Cotati, Tuesday, 11 August
Clear. High 91°, low 53°.
Pressure29.88 inHg
Wind3.6 mph SW
Humidity22%
Visibility6.2 mi
Dew point47°
Wed, 1289° / 52°0
89 °
Cotati, Wednesday, 12 August
Overcast. High 89°, low 52°.
Pressure29.83 inHg
Wind3.6 mph S
Humidity26%
Visibility6.2 mi
Dew point49°
Thu, 1383° / 54°0
83 °
Cotati, Thursday, 13 August
Partly cloudy. High 83°, low 54°.
Pressure29.83 inHg
Wind12.7 mph S
Humidity34%
Visibility—
Dew point49°
Fri, 1479° / 56°0
79 °
Cotati, Friday, 14 August
Overcast. High 79°, low 56°.
Pressure29.91 inHg
Wind10.6 mph SW
Humidity40%
Visibility—
Dew point50°
Sat, 1583° / 53°0
83 °
Cotati, Saturday, 15 August
Clear. High 83°, low 53°.
Pressure30.00 inHg
Wind12.6 mph SW
Humidity31%
Visibility—
Dew point46°
Sun, 1685° / 52°0
85 °
Cotati, Sunday, 16 August
Overcast. High 85°, low 52°.
Pressure30.00 inHg
Wind10.7 mph SW
Humidity28%
Visibility—
Dew point45°
Mon, 1782° / 55°0
82 °
Cotati, Monday, 17 August
Overcast. High 82°, low 55°.
Pressure30.06 inHg
Wind11.3 mph SW
Humidity36%
Visibility—
Dew point49°
Tue, 1887° / 53°0
87 °
Cotati, Tuesday, 18 August
Clear. High 87°, low 53°.
Pressure30.00 inHg
Wind10.4 mph SW
Humidity22%
Visibility—
Dew point41°
Wed, 1989° / 54°0
89 °
Cotati, Wednesday, 19 August
Clear. High 89°, low 54°.
Pressure29.94 inHg
Wind10.7 mph SW
Humidity23%
Visibility—
Dew point43°
Thu, 2086° / 55°0
86 °
Cotati, Thursday, 20 August
Mostly clear. High 86°, low 55°.
Pressure29.91 inHg
Wind10.2 mph SW
Humidity32%
Visibility—
Dew point50°
Fri, 2192° / 58°0
92 °
Cotati, Friday, 21 August
Clear. High 92°, low 58°.
Pressure29.85 inHg
Wind10.5 mph SW
Humidity25%
Visibility—
Dew point48°
Sat, 2289° / 58°0
89 °
Cotati, Saturday, 22 August
Overcast. High 89°, low 58°.
Pressure29.83 inHg
Wind9.6 mph SW
Humidity30%
Visibility—
Dew point50°
Sun, 2381° / 55°0
81 °
Cotati, Sunday, 23 August
Partly cloudy. High 81°, low 55°.
Pressure29.85 inHg
Wind9.3 mph SW
Humidity38%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2480° / 56°0
80 °
Cotati, Monday, 24 August
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0 in
Chance of precipitation2%
Record high100° (2010)
Record low51° (1970)
Tue, 2579° / 56°0
79 °
Cotati, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high79°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high97° (1988)
Record low50° (1966)
Wed, 2680° / 55°0
80 °
Cotati, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high80°
Average low55°
Average precipitation0 in
Chance of precipitation0%
Record high96° (1988)
Record low50° (1966)
Thu, 2782° / 56°0
82 °
Cotati, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high96° (1962)
Record low50° (2023)
Fri, 2882° / 57°0
82 °
Cotati, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high98° (2021)
Record low51° (1985)
Sat, 2981° / 57°0
81 °
Cotati, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high97° (2009)
Record low50° (1985)
Sun, 3081° / 57°0
81 °
Cotati, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high81°
Average low57°
Average precipitation0 in
Chance of precipitation2%
Record high95° (1996)
Record low50° (1971)
Mon, 3181° / 56°0.01
81 °
Cotati, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low56°
Average precipitation0.01 in
Chance of precipitation3%
Record high92° (1976)
Record low51° (1970)
Tue, 0182° / 56°0
82 °
Cotati, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0 in
Chance of precipitation2%
Record high104° (2017)
Record low50° (1964)
Wed, 0282° / 56°0
82 °
Cotati, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0 in
Chance of precipitation2%
Record high105° (2017)
Record low50° (1964)
Thu, 0381° / 56°0
81 °
Cotati, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high95° (2017)
Record low49° (2000)
Fri, 0482° / 56°0
82 °
Cotati, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high95° (2022)
Record low48° (2000)
Sat, 0582° / 56°0
82 °
Cotati, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0 in
Chance of precipitation2%
Record high99° (2022)
Record low50° (1996)
Sun, 0682° / 56°0
82 °
Cotati, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high117° (2022)
Record low51° (1980)
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 Cotati, 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 Cotati, 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.