Monthly outlook for Arnold Mill, GA: average high 89.1°, average low 72.3°. That is 1.7° above the climate normal for August. Precipitation is expected on 11 days (about 2.3 inches), against a normal of 7 days and 2.0 inches. The warmest day looks like 11 August (95.3°), the coolest 8 August (69.4°).
89.1°/72.3°
Average high / low
+1.7°
Above normal
11 / 7
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
89.2°
85.9°
+1.8°
18 August – 27 August
88.9°
86°
+1.6°
28 August – 6 September
at normal
83.8°
—
August records over 66 years
101.1°21 August 1983All-time high
57.4°14 August 2004All-time low
Climate normals and records are computed from the nearest reference point — Sandy Springs (13 mi).
Sun, 0988° / 70°0.06
88 °
Arnold Mill, Sunday, 9 August
Light rain. High 88°, low 70°.
Pressure30.12 inHg
Wind2.7 mph SW
Humidity46%
Visibility6.2 mi
Dew point67°
Mon, 1095° / 73°0.1
95 °
Arnold Mill, Monday, 10 August
Rain. High 95°, low 73°.
Pressure30.15 inHg
Wind4.2 mph W
Humidity49%
Visibility6.2 mi
Dew point68°
Tue, 1195° / 75°0.02
95 °
Arnold Mill, Tuesday, 11 August
Light rain. High 95°, low 75°.
Pressure30.09 inHg
Wind6.5 mph W
Humidity44%
Visibility6.2 mi
Dew point67°
Wed, 1295° / 76°0.07
95 °
Arnold Mill, Wednesday, 12 August
Light rain. High 95°, low 76°.
Pressure30.00 inHg
Wind10.6 mph W
Humidity47%
Visibility6.2 mi
Dew point68°
Thu, 1394° / 74°0.21
94 °
Arnold Mill, Thursday, 13 August
Light rain. High 94°, low 74°.
Pressure29.97 inHg
Wind10.1 mph W
Humidity47%
Visibility—
Dew point66°
Fri, 1476° / 72°0.24
76 °
Arnold Mill, Friday, 14 August
Light rain. High 76°, low 72°.
Pressure30.06 inHg
Wind10.7 mph W
Humidity89%
Visibility—
Dew point72°
Sat, 1584° / 70°0
84 °
Arnold Mill, Saturday, 15 August
Overcast. High 84°, low 70°.
Pressure30.18 inHg
Wind7.2 mph E
Humidity57%
Visibility—
Dew point63°
Sun, 1687° / 70°0
87 °
Arnold Mill, Sunday, 16 August
Overcast. High 87°, low 70°.
Pressure30.18 inHg
Wind6 mph SE
Humidity44%
Visibility—
Dew point60°
Mon, 1789° / 72°0.09
89 °
Arnold Mill, Monday, 17 August
Light rain. High 89°, low 72°.
Pressure30.12 inHg
Wind6.4 mph SE
Humidity46%
Visibility—
Dew point63°
Tue, 1889° / 72°0.71
89 °
Arnold Mill, Tuesday, 18 August
Rain. High 89°, low 72°.
Pressure30.03 inHg
Wind8.1 mph W
Humidity50%
Visibility—
Dew point66°
Wed, 1993° / 74°0.09
93 °
Arnold Mill, Wednesday, 19 August
Light rain. High 93°, low 74°.
Pressure29.91 inHg
Wind8.4 mph NW
Humidity46%
Visibility—
Dew point65°
Thu, 2094° / 74°0
94 °
Arnold Mill, Thursday, 20 August
Partly cloudy. High 94°, low 74°.
Pressure29.94 inHg
Wind7.9 mph NW
Humidity41%
Visibility—
Dew point64°
Fri, 2182° / 73°0.2
82 °
Arnold Mill, Friday, 21 August
Light rain. High 82°, low 73°.
Pressure29.94 inHg
Wind9.5 mph W
Humidity89%
Visibility—
Dew point73°
Sat, 2291° / 72°0.02
91 °
Arnold Mill, Saturday, 22 August
Light rain. High 91°, low 72°.
Pressure29.88 inHg
Wind15.3 mph NW
Humidity48%
Visibility—
Dew point67°
Sun, 2385° / 71°0.26
85 °
Arnold Mill, Sunday, 23 August
Light rain. High 85°, low 71°.
Pressure29.97 inHg
Wind5.9 mph N
Humidity59%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2486° / 69°0.17
86 °
Arnold Mill, Monday, 24 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.17 in
Chance of precipitation37%
Record high99° (1983)
Record low60° (1969)
Tue, 2585° / 69°0.16
85 °
Arnold Mill, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.16 in
Chance of precipitation40%
Record high95° (2023)
Record low60° (1969)
Wed, 2686° / 69°0.15
86 °
Arnold Mill, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.15 in
Chance of precipitation33%
Record high98° (2011)
Record low60° (1969)
Thu, 2786° / 69°0.09
86 °
Arnold Mill, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.09 in
Chance of precipitation35%
Record high95° (1987)
Record low59° (2025)
Fri, 2885° / 69°0.11
85 °
Arnold Mill, Friday, 28 August
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.11 in
Chance of precipitation28%
Record high94° (1990)
Record low63° (2025)
Sat, 2985° / 69°0.07
85 °
Arnold Mill, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.07 in
Chance of precipitation35%
Record high97° (1990)
Record low57° (1967)
Sun, 3084° / 69°0.12
84 °
Arnold Mill, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low69°
Average precipitation0.12 in
Chance of precipitation47%
Record high93° (1998)
Record low59° (1992)
Mon, 3183° / 69°0.18
83 °
Arnold Mill, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low69°
Average precipitation0.18 in
Chance of precipitation47%
Record high95° (1970)
Record low60° (1986)
Tue, 0184° / 69°0.13
84 °
Arnold Mill, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low69°
Average precipitation0.13 in
Chance of precipitation45%
Record high94° (1970)
Record low61° (1968)
Wed, 0283° / 68°0.12
83 °
Arnold Mill, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.12 in
Chance of precipitation37%
Record high95° (1970)
Record low59° (1968)
Thu, 0383° / 68°0.12
83 °
Arnold Mill, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low68°
Average precipitation0.12 in
Chance of precipitation35%
Record high95° (2011)
Record low57° (2017)
Fri, 0483° / 67°0.16
83 °
Arnold Mill, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.16 in
Chance of precipitation38%
Record high96° (2019)
Record low58° (1967)
Sat, 0583° / 67°0.18
83 °
Arnold Mill, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.18 in
Chance of precipitation35%
Record high94° (1999)
Record low57° (1967)
Sun, 0683° / 67°0.06
83 °
Arnold Mill, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.06 in
Chance of precipitation35%
Record high94° (1990)
Record low56° (1984)
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 Arnold Mill, GA 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 Arnold Mill, GA 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.