Monthly outlook for Grabtown, CA: average high 71.5°, average low 55.5°. That is 1.5° 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 9 August (87.8°), the coolest 16 August (53.8°).
71.5°/55.5°
Average high / low
−1.5°
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
72.2°
74.5°
-1.3°
18 August – 27 August
70.3°
74°
-2.1°
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 (7 mi).
Sun, 0988° / 62°0
88 °
Grabtown, Sunday, 9 August
Partly cloudy. High 88°, low 62°.
Pressure29.83 inHg
Wind5.2 mph W
Humidity53%
Visibility6.2 mi
Dew point52°
Mon, 1071° / 54°0
71 °
Grabtown, Monday, 10 August
Overcast. High 71°, low 54°.
Pressure29.88 inHg
Wind6.2 mph W
Humidity60%
Visibility6.2 mi
Dew point54°
Tue, 1171° / 54°0
71 °
Grabtown, Tuesday, 11 August
Mostly clear. High 71°, low 54°.
Pressure29.94 inHg
Wind5.8 mph W
Humidity61%
Visibility6.2 mi
Dew point54°
Wed, 1268° / 54°0
68 °
Grabtown, Wednesday, 12 August
Overcast. High 68°, low 54°.
Pressure29.88 inHg
Wind6.6 mph SW
Humidity67%
Visibility6.2 mi
Dew point55°
Thu, 1369° / 55°0
69 °
Grabtown, Thursday, 13 August
Mostly clear. High 69°, low 55°.
Pressure29.85 inHg
Wind9.6 mph SW
Humidity64%
Visibility—
Dew point55°
Fri, 1468° / 55°0
68 °
Grabtown, Friday, 14 August
Overcast. High 68°, low 55°.
Pressure29.94 inHg
Wind7.5 mph SW
Humidity69%
Visibility—
Dew point55°
Sat, 1569° / 54°0
69 °
Grabtown, Saturday, 15 August
Clear. High 69°, low 54°.
Pressure30.03 inHg
Wind7.2 mph SW
Humidity60%
Visibility—
Dew point53°
Sun, 1669° / 54°0
69 °
Grabtown, Sunday, 16 August
Overcast. High 69°, low 54°.
Pressure30.03 inHg
Wind7 mph W
Humidity61%
Visibility—
Dew point54°
Mon, 1770° / 56°0
70 °
Grabtown, Monday, 17 August
Overcast. High 70°, low 56°.
Pressure30.09 inHg
Wind5.6 mph W
Humidity62%
Visibility—
Dew point55°
Tue, 1872° / 55°0
72 °
Grabtown, Tuesday, 18 August
Mostly clear. High 72°, low 55°.
Pressure30.03 inHg
Wind9.2 mph NW
Humidity50%
Visibility—
Dew point51°
Wed, 1969° / 55°0
69 °
Grabtown, Wednesday, 19 August
Clear. High 69°, low 55°.
Pressure30.03 inHg
Wind9.1 mph NW
Humidity60%
Visibility—
Dew point53°
Thu, 2070° / 56°0
70 °
Grabtown, Thursday, 20 August
Partly cloudy. High 70°, low 56°.
Pressure29.97 inHg
Wind6.8 mph W
Humidity66%
Visibility—
Dew point56°
Fri, 2173° / 55°0
73 °
Grabtown, Friday, 21 August
Partly cloudy. High 73°, low 55°.
Pressure29.88 inHg
Wind7.7 mph W
Humidity57%
Visibility—
Dew point55°
Sat, 2270° / 56°0
70 °
Grabtown, Saturday, 22 August
Overcast. High 70°, low 56°.
Pressure29.88 inHg
Wind7 mph W
Humidity64%
Visibility—
Dew point56°
Sun, 2368° / 55°0
68 °
Grabtown, Sunday, 23 August
Overcast. High 68°, low 55°.
Pressure29.91 inHg
Wind8 mph W
Humidity65%
Visibility—
Dew point55°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2474° / 58°0
74 °
Grabtown, 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 °
Grabtown, 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 °
Grabtown, 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 °
Grabtown, 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 °
Grabtown, 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 °
Grabtown, 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 °
Grabtown, 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 °
Grabtown, 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 °
Grabtown, 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 °
Grabtown, 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 °
Grabtown, 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 °
Grabtown, 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 °
Grabtown, 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 °
Grabtown, 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 Grabtown, 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 Grabtown, 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.