Monthly outlook for Sleepy Hollow, CA: average high 70.8°, average low 53.1°. 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 0.0 inches. The warmest day looks like 9 August (80.7°), the coolest 11 August (50.8°).
70.8°/53.1°
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
68.7°
69°
-0.2°
19 August – 28 August
74.4°
68.9°
+3°
29 August – 7 September
at normal
70.4°
—
August records over 66 years
93.9°14 August 2020All-time high
48.6°10 August 1960All-time low
Climate normals and records are computed from the nearest reference point — Bolinas (9 mi).
Mon, 1077° / 52°0
77 °
Sleepy Hollow, Monday, 10 August
Clear. High 77°, low 52°.
Pressure29.88 inHg
Wind9.3 mph S
Humidity61%
Visibility6.2 mi
Dew point52°
Tue, 1167° / 51°0
67 °
Sleepy Hollow, Tuesday, 11 August
Clear. High 67°, low 51°.
Pressure29.94 inHg
Wind9.6 mph S
Humidity62%
Visibility6.2 mi
Dew point52°
Wed, 1264° / 51°0
64 °
Sleepy Hollow, Wednesday, 12 August
Clear. High 64°, low 51°.
Pressure29.85 inHg
Wind10.3 mph S
Humidity69%
Visibility6.2 mi
Dew point53°
Thu, 1362° / 52°0
62 °
Sleepy Hollow, Thursday, 13 August
Mostly clear. High 62°, low 52°.
Pressure29.85 inHg
Wind11.5 mph S
Humidity69%
Visibility—
Dew point51°
Fri, 1464° / 52°0
64 °
Sleepy Hollow, Friday, 14 August
Clear. High 64°, low 52°.
Pressure29.94 inHg
Wind11.7 mph SW
Humidity64%
Visibility—
Dew point50°
Sat, 1565° / 51°0
65 °
Sleepy Hollow, Saturday, 15 August
Clear. High 65°, low 51°.
Pressure30.00 inHg
Wind10 mph SW
Humidity61%
Visibility—
Dew point50°
Sun, 1667° / 51°0
67 °
Sleepy Hollow, Sunday, 16 August
Overcast. High 67°, low 51°.
Pressure30.12 inHg
Wind6.7 mph SW
Humidity71%
Visibility—
Dew point51°
Mon, 1770° / 53°0
70 °
Sleepy Hollow, Monday, 17 August
Partly cloudy. High 70°, low 53°.
Pressure30.06 inHg
Wind8.3 mph W
Humidity54%
Visibility—
Dew point51°
Tue, 1871° / 53°0
71 °
Sleepy Hollow, Tuesday, 18 August
Clear. High 71°, low 53°.
Pressure30.03 inHg
Wind9.3 mph W
Humidity51%
Visibility—
Dew point51°
Wed, 1972° / 54°0
72 °
Sleepy Hollow, Wednesday, 19 August
Overcast. High 72°, low 54°.
Pressure29.94 inHg
Wind8.8 mph W
Humidity48%
Visibility—
Dew point50°
Thu, 2072° / 53°0
72 °
Sleepy Hollow, Thursday, 20 August
Overcast. High 72°, low 53°.
Pressure29.88 inHg
Wind9.6 mph W
Humidity55%
Visibility—
Dew point53°
Fri, 2174° / 53°0
74 °
Sleepy Hollow, Friday, 21 August
Clear. High 74°, low 53°.
Pressure29.83 inHg
Wind8.9 mph SW
Humidity52%
Visibility—
Dew point53°
Sat, 2276° / 55°0
76 °
Sleepy Hollow, Saturday, 22 August
Mostly clear. High 76°, low 55°.
Pressure29.88 inHg
Wind8.8 mph SW
Humidity48%
Visibility—
Dew point53°
Sun, 2378° / 57°0
78 °
Sleepy Hollow, Sunday, 23 August
Overcast. High 78°, low 57°.
Pressure29.91 inHg
Wind8.3 mph SW
Humidity43%
Visibility—
Dew point52°
Mon, 2475° / 56°0
75 °
Sleepy Hollow, Monday, 24 August
Clear. High 75°, low 56°.
Pressure29.91 inHg
Wind9.9 mph W
Humidity48%
Visibility—
Dew point52°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2568° / 56°0
68 °
Sleepy Hollow, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high68°
Average low56°
Average precipitation0 in
Chance of precipitation2%
Record high80° (1988)
Record low52° (1966)
Wed, 2669° / 56°0
69 °
Sleepy Hollow, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high69°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high89° (2017)
Record low50° (2005)
Thu, 2770° / 56°0
70 °
Sleepy Hollow, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high70°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high94° (2017)
Record low53° (2009)
Fri, 2870° / 56°0
70 °
Sleepy Hollow, Friday, 28 August
Climate normal for this date — 60-year average.
Average high70°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high89° (2017)
Record low53° (1960)
Sat, 2970° / 56°0
70 °
Sleepy Hollow, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high70°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high88° (1968)
Record low53° (1973)
Sun, 3070° / 57°0
70 °
Sleepy Hollow, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high70°
Average low57°
Average precipitation0 in
Chance of precipitation2%
Record high87° (2025)
Record low53° (1960)
Mon, 3171° / 56°0.01
71 °
Sleepy Hollow, Monday, 31 August
Climate normal for this date — 60-year average.
Average high71°
Average low56°
Average precipitation0.01 in
Chance of precipitation3%
Record high93° (2017)
Record low51° (2002)
Tue, 0171° / 56°0
71 °
Sleepy Hollow, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high71°
Average low56°
Average precipitation0 in
Chance of precipitation2%
Record high100° (2017)
Record low52° (2002)
Wed, 0271° / 56°0
71 °
Sleepy Hollow, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high71°
Average low56°
Average precipitation0 in
Chance of precipitation2%
Record high101° (2017)
Record low52° (2012)
Thu, 0370° / 56°0
70 °
Sleepy Hollow, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high70°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high87° (2024)
Record low51° (1973)
Fri, 0470° / 56°0
70 °
Sleepy Hollow, Friday, 4 September
Climate normal for this date — 60-year average.
Average high70°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high92° (2022)
Record low51° (1999)
Sat, 0571° / 56°0
71 °
Sleepy Hollow, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high71°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high100° (2022)
Record low50° (1969)
Sun, 0671° / 56°0
71 °
Sleepy Hollow, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high71°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high103° (2022)
Record low50° (1969)
Mon, 0771° / 56°0
71 °
Sleepy Hollow, Monday, 7 September
Climate normal for this date — 60-year average.
Average high71°
Average low56°
Average precipitation0 in
Chance of precipitation0%
Record high100° (2020)
Record low51° (2001)
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 Sleepy Hollow, 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 Sleepy Hollow, 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.