Monthly outlook for San Gregorio, CA: average high 69.5°, average low 57.5°. That is 2.5° 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 8 August (76.9°), the coolest 16 August (56.5°).
69.5°/57.5°
Average high / low
−2.5°
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
70°
74.5°
-2.5°
18 August – 27 August
68.8°
74°
-2.9°
28 August – 6 September
at normal
75.7°
—
August records over 66 years
96.6°14 August 2020All-time high
52.2°10 August 1960All-time low
Climate normals and records are computed from the nearest reference point — Belmont (14 mi).
Sun, 0971° / 57°0
71 °
San Gregorio, Sunday, 9 August
Partly cloudy. High 71°, low 57°.
Pressure29.85 inHg
Wind6.4 mph W
Humidity63%
Visibility4.7 mi
Dew point54°
Mon, 1069° / 57°0
69 °
San Gregorio, Monday, 10 August
Overcast. High 69°, low 57°.
Pressure29.91 inHg
Wind6.7 mph W
Humidity68%
Visibility5.4 mi
Dew point55°
Tue, 1169° / 57°0
69 °
San Gregorio, Tuesday, 11 August
Partly cloudy. High 69°, low 57°.
Pressure29.97 inHg
Wind6.7 mph W
Humidity69%
Visibility6.2 mi
Dew point55°
Wed, 1267° / 57°0
67 °
San Gregorio, Wednesday, 12 August
Light rain. High 67°, low 57°.
Pressure29.91 inHg
Wind8.1 mph SW
Humidity72%
Visibility6.2 mi
Dew point56°
Thu, 1369° / 58°0
69 °
San Gregorio, Thursday, 13 August
Mostly clear. High 69°, low 58°.
Pressure29.85 inHg
Wind10.6 mph S
Humidity70%
Visibility—
Dew point58°
Fri, 1468° / 58°0
68 °
San Gregorio, Friday, 14 August
Overcast. High 68°, low 58°.
Pressure29.94 inHg
Wind11.5 mph S
Humidity73%
Visibility—
Dew point58°
Sat, 1570° / 57°0
70 °
San Gregorio, Saturday, 15 August
Clear. High 70°, low 57°.
Pressure30.03 inHg
Wind8.8 mph SW
Humidity64%
Visibility—
Dew point56°
Sun, 1669° / 57°0
69 °
San Gregorio, Sunday, 16 August
Overcast. High 69°, low 57°.
Pressure30.03 inHg
Wind7.4 mph W
Humidity68%
Visibility—
Dew point56°
Mon, 1769° / 58°0
69 °
San Gregorio, Monday, 17 August
Overcast. High 69°, low 58°.
Pressure30.09 inHg
Wind6.7 mph W
Humidity69%
Visibility—
Dew point57°
Tue, 1870° / 58°0
70 °
San Gregorio, Tuesday, 18 August
Partly cloudy. High 70°, low 58°.
Pressure30.06 inHg
Wind11.1 mph NW
Humidity62%
Visibility—
Dew point55°
Wed, 1968° / 58°0
68 °
San Gregorio, Wednesday, 19 August
Mostly clear. High 68°, low 58°.
Pressure30.03 inHg
Wind9 mph NW
Humidity70%
Visibility—
Dew point57°
Thu, 2069° / 58°0
69 °
San Gregorio, Thursday, 20 August
Overcast. High 69°, low 58°.
Pressure29.97 inHg
Wind7.9 mph NW
Humidity75%
Visibility—
Dew point59°
Fri, 2170° / 58°0
70 °
San Gregorio, Friday, 21 August
Partly cloudy. High 70°, low 58°.
Pressure29.91 inHg
Wind9 mph NW
Humidity68%
Visibility—
Dew point58°
Sat, 2269° / 58°0
69 °
San Gregorio, Saturday, 22 August
Overcast. High 69°, low 58°.
Pressure29.88 inHg
Wind8.1 mph NW
Humidity73%
Visibility—
Dew point59°
Sun, 2367° / 57°0
67 °
San Gregorio, Sunday, 23 August
Overcast. High 67°, low 57°.
Pressure29.91 inHg
Wind9.2 mph W
Humidity73%
Visibility—
Dew point57°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2474° / 58°0
74 °
San Gregorio, Monday, 24 August
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0 in
Chance of precipitation2%
Record high94° (2010)
Record low53° (1970)
Tue, 2574° / 58°0
74 °
San Gregorio, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high86° (2010)
Record low54° (1970)
Wed, 2675° / 57°0
75 °
San Gregorio, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high75°
Average low57°
Average precipitation0 in
Chance of precipitation0%
Record high88° (2017)
Record low53° (1970)
Thu, 2776° / 58°0
76 °
San Gregorio, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high92° (2017)
Record low54° (1960)
Fri, 2876° / 58°0
76 °
San Gregorio, Friday, 28 August
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high96° (2021)
Record low54° (1970)
Sat, 2975° / 58°0
75 °
San Gregorio, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high95° (1968)
Record low54° (1985)
Sun, 3074° / 58°0
74 °
San Gregorio, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high74°
Average low58°
Average precipitation0 in
Chance of precipitation2%
Record high89° (2023)
Record low54° (2010)
Mon, 3175° / 58°0
75 °
San Gregorio, Monday, 31 August
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high90° (2017)
Record low53° (1960)
Tue, 0176° / 58°0
76 °
San Gregorio, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0 in
Chance of precipitation2%
Record high103° (2017)
Record low53° (1970)
Wed, 0276° / 58°0
76 °
San Gregorio, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high105° (2017)
Record low53° (1970)
Thu, 0376° / 58°0
76 °
San Gregorio, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high94° (2017)
Record low53° (1970)
Fri, 0476° / 58°0
76 °
San Gregorio, Friday, 4 September
Climate normal for this date — 60-year average.
Average high76°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high92° (2022)
Record low53° (1960)
Sat, 0577° / 58°0
77 °
San Gregorio, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high77°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high100° (2022)
Record low53° (2010)
Sun, 0677° / 58°0
77 °
San Gregorio, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low58°
Average precipitation0 in
Chance of precipitation0%
Record high106° (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 San Gregorio, 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 San Gregorio, 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.