Monthly outlook for Galloway Mill, TN: average high 82.9°, average low 65°. That is 0.8° above the climate normal for August. Precipitation is expected on 10 days (about 3.3 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 23 August (87.9°), the coolest 21 August (54.9°).
82.9°/65°
Average high / low
+0.8°
Above normal
10 / 6
Wet days / normal
3.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
82.4°
81.5°
+0.5°
19 August – 28 August
83.7°
81.5°
+1.2°
29 August – 7 September
at normal
80.1°
—
August records over 66 years
96.6°16 August 2007All-time high
46.9°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Johnson City (12 mi).
Mon, 1086° / 69°0.11
86 °
Galloway Mill, Monday, 10 August
Rain. High 86°, low 69°.
Pressure30.15 inHg
Wind6.8 mph SW
Humidity67%
Visibility6.2 mi
Dew point68°
Tue, 1187° / 66°0.15
87 °
Galloway Mill, Tuesday, 11 August
Rain. High 87°, low 66°.
Pressure30.09 inHg
Wind5.3 mph W
Humidity81%
Visibility6.2 mi
Dew point73°
Wed, 1287° / 65°0.71
87 °
Galloway Mill, Wednesday, 12 August
Heavy rain. High 87°, low 65°.
Pressure29.94 inHg
Wind12.3 mph W
Humidity61%
Visibility6.2 mi
Dew point69°
Thu, 1382° / 65°0.09
82 °
Galloway Mill, Thursday, 13 August
Light rain. High 82°, low 65°.
Pressure30.00 inHg
Wind5.6 mph W
Humidity65%
Visibility—
Dew point65°
Fri, 1474° / 67°0.47
74 °
Galloway Mill, Friday, 14 August
Light rain. High 74°, low 67°.
Pressure30.09 inHg
Wind9.8 mph SW
Humidity97%
Visibility—
Dew point70°
Sat, 1584° / 66°0.03
84 °
Galloway Mill, Saturday, 15 August
Light rain. High 84°, low 66°.
Pressure30.18 inHg
Wind5.7 mph NE
Humidity48%
Visibility—
Dew point58°
Sun, 1677° / 65°0.03
77 °
Galloway Mill, Sunday, 16 August
Light rain. High 77°, low 65°.
Pressure30.18 inHg
Wind5.1 mph SW
Humidity81%
Visibility—
Dew point67°
Mon, 1782° / 66°1.17
82 °
Galloway Mill, Monday, 17 August
Heavy rain. High 82°, low 66°.
Pressure30.06 inHg
Wind11.4 mph SW
Humidity80%
Visibility—
Dew point71°
Tue, 1882° / 66°0
82 °
Galloway Mill, Tuesday, 18 August
Light rain. High 82°, low 66°.
Pressure30.03 inHg
Wind4 mph SW
Humidity78%
Visibility—
Dew point68°
Wed, 1986° / 66°0.04
86 °
Galloway Mill, Wednesday, 19 August
Light rain. High 86°, low 66°.
Pressure29.91 inHg
Wind8.2 mph SW
Humidity56%
Visibility—
Dew point65°
Thu, 2081° / 61°0.06
81 °
Galloway Mill, Thursday, 20 August
Light rain. High 81°, low 61°.
Pressure29.88 inHg
Wind9.8 mph NW
Humidity70%
Visibility—
Dew point65°
Fri, 2180° / 55°0
80 °
Galloway Mill, Friday, 21 August
Mostly clear. High 80°, low 55°.
Pressure30.00 inHg
Wind5.9 mph SW
Humidity46%
Visibility—
Dew point54°
Sat, 2280° / 62°0.02
80 °
Galloway Mill, Saturday, 22 August
Light rain. High 80°, low 62°.
Pressure30.03 inHg
Wind8.1 mph SW
Humidity52%
Visibility—
Dew point59°
Sun, 2388° / 66°0.32
88 °
Galloway Mill, Sunday, 23 August
Rain. High 88°, low 66°.
Pressure30.06 inHg
Wind11.8 mph SW
Humidity54%
Visibility—
Dew point67°
Mon, 2486° / 67°0
86 °
Galloway Mill, Monday, 24 August
Overcast. High 86°, low 67°.
Pressure30.06 inHg
Wind6.2 mph SW
Humidity56%
Visibility—
Dew point67°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 64°0.07
82 °
Galloway Mill, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.07 in
Chance of precipitation25%
Record high93° (2023)
Record low56° (2013)
Wed, 2682° / 63°0.07
82 °
Galloway Mill, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low63°
Average precipitation0.07 in
Chance of precipitation27%
Record high92° (2016)
Record low55° (2015)
Thu, 2782° / 64°0.15
82 °
Galloway Mill, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.15 in
Chance of precipitation38%
Record high91° (2016)
Record low53° (1968)
Fri, 2882° / 64°0.08
82 °
Galloway Mill, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.08 in
Chance of precipitation32%
Record high91° (2021)
Record low52° (1968)
Sat, 2982° / 63°0.06
82 °
Galloway Mill, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low63°
Average precipitation0.06 in
Chance of precipitation28%
Record high92° (2024)
Record low47° (1986)
Sun, 3082° / 63°0.06
82 °
Galloway Mill, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low63°
Average precipitation0.06 in
Chance of precipitation38%
Record high94° (2024)
Record low49° (1986)
Mon, 3181° / 64°0.1
81 °
Galloway Mill, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.1 in
Chance of precipitation43%
Record high90° (2024)
Record low52° (1976)
Tue, 0180° / 63°0.15
80 °
Galloway Mill, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.15 in
Chance of precipitation40%
Record high90° (1973)
Record low52° (1999)
Wed, 0280° / 63°0.08
80 °
Galloway Mill, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.08 in
Chance of precipitation35%
Record high91° (2011)
Record low49° (1967)
Thu, 0380° / 62°0.1
80 °
Galloway Mill, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.1 in
Chance of precipitation42%
Record high93° (2011)
Record low49° (1967)
Fri, 0479° / 62°0.15
79 °
Galloway Mill, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.15 in
Chance of precipitation38%
Record high92° (2019)
Record low50° (1997)
Sat, 0579° / 62°0.17
79 °
Galloway Mill, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.17 in
Chance of precipitation40%
Record high91° (1975)
Record low47° (1997)
Sun, 0679° / 62°0.12
79 °
Galloway Mill, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.12 in
Chance of precipitation38%
Record high89° (2023)
Record low51° (1984)
Mon, 0779° / 61°0.11
79 °
Galloway Mill, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.11 in
Chance of precipitation32%
Record high91° (1990)
Record low49° (2017)
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 Galloway Mill, TN 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 Galloway Mill, TN 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.