Monthly outlook for Olde Mill, TN: average high 87.3°, average low 70.1°. That is 0.6° above the climate normal for August. Precipitation is expected on 10 days (about 2.2 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 12 August (94.8°), the coolest 16 August (61.7°).
87.3°/70.1°
Average high / low
+0.6°
Above normal
10 / 6
Wet days / normal
2.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
87.6°
86.2°
+0.8°
18 August – 27 August
86.9°
86.3°
+0.3°
28 August – 6 September
at normal
84.6°
—
August records over 66 years
103.1°16 August 2007All-time high
55.9°13 August 1964All-time low
Climate normals and records are computed from the nearest reference point — Chattanooga (7 mi).
Sun, 0986° / 71°0.11
86 °
Olde Mill, Sunday, 9 August
Rain. High 86°, low 71°.
Pressure30.12 inHg
Wind2.3 mph S
Humidity59%
Visibility6.2 mi
Dew point70°
Mon, 1093° / 72°0.16
93 °
Olde Mill, Monday, 10 August
Rain. High 93°, low 72°.
Pressure30.12 inHg
Wind3 mph SW
Humidity56%
Visibility6.2 mi
Dew point70°
Tue, 1194° / 71°0.13
94 °
Olde Mill, Tuesday, 11 August
Light rain. High 94°, low 71°.
Pressure30.06 inHg
Wind5.3 mph SW
Humidity50%
Visibility6.2 mi
Dew point69°
Wed, 1295° / 71°0.02
95 °
Olde Mill, Wednesday, 12 August
Light rain. High 95°, low 71°.
Pressure29.97 inHg
Wind8.1 mph W
Humidity51%
Visibility6.2 mi
Dew point69°
Thu, 1391° / 71°0.03
91 °
Olde Mill, Thursday, 13 August
Light rain. High 91°, low 71°.
Pressure29.94 inHg
Wind10.4 mph W
Humidity49%
Visibility—
Dew point67°
Fri, 1474° / 70°0.44
74 °
Olde Mill, Friday, 14 August
Rain. High 74°, low 70°.
Pressure30.06 inHg
Wind6.5 mph SW
Humidity96%
Visibility—
Dew point72°
Sat, 1586° / 64°0
86 °
Olde Mill, Saturday, 15 August
Partly cloudy. High 86°, low 64°.
Pressure30.21 inHg
Wind7.1 mph NE
Humidity41%
Visibility—
Dew point55°
Sun, 1687° / 62°0
87 °
Olde Mill, Sunday, 16 August
Overcast. High 87°, low 62°.
Pressure30.21 inHg
Wind5.3 mph N
Humidity45%
Visibility—
Dew point59°
Mon, 1781° / 68°0.37
81 °
Olde Mill, Monday, 17 August
Rain. High 81°, low 68°.
Pressure30.12 inHg
Wind5.7 mph S
Humidity72%
Visibility—
Dew point70°
Tue, 1886° / 71°0.28
86 °
Olde Mill, Tuesday, 18 August
Rain. High 86°, low 71°.
Pressure30.00 inHg
Wind8.1 mph SW
Humidity65%
Visibility—
Dew point71°
Wed, 1994° / 72°0
94 °
Olde Mill, Wednesday, 19 August
Overcast. High 94°, low 72°.
Pressure29.91 inHg
Wind4.5 mph NW
Humidity46%
Visibility—
Dew point66°
Thu, 2091° / 72°0.11
91 °
Olde Mill, Thursday, 20 August
Light rain. High 91°, low 72°.
Pressure29.94 inHg
Wind5.9 mph SW
Humidity62%
Visibility—
Dew point71°
Fri, 2183° / 74°0.16
83 °
Olde Mill, Friday, 21 August
Light rain. High 83°, low 74°.
Pressure29.91 inHg
Wind7.2 mph W
Humidity80%
Visibility—
Dew point75°
Sat, 2284° / 72°0.3
84 °
Olde Mill, Saturday, 22 August
Rain. High 84°, low 72°.
Pressure29.88 inHg
Wind8.9 mph W
Humidity81%
Visibility—
Dew point76°
Sun, 2383° / 69°0
83 °
Olde Mill, Sunday, 23 August
Overcast. High 83°, low 69°.
Pressure30.00 inHg
Wind6.4 mph NE
Humidity67%
Visibility—
Dew point65°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2486° / 69°0.08
86 °
Olde Mill, Monday, 24 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.08 in
Chance of precipitation30%
Record high99° (1983)
Record low57° (1997)
Tue, 2586° / 69°0.11
86 °
Olde Mill, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.11 in
Chance of precipitation30%
Record high98° (2023)
Record low59° (2015)
Wed, 2686° / 69°0.14
86 °
Olde Mill, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.14 in
Chance of precipitation27%
Record high97° (2023)
Record low58° (1966)
Thu, 2786° / 69°0.1
86 °
Olde Mill, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.1 in
Chance of precipitation33%
Record high94° (1975)
Record low60° (1966)
Fri, 2886° / 69°0.1
86 °
Olde Mill, Friday, 28 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.1 in
Chance of precipitation30%
Record high97° (1990)
Record low56° (1967)
Sat, 2986° / 69°0.1
86 °
Olde Mill, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high86°
Average low69°
Average precipitation0.1 in
Chance of precipitation38%
Record high96° (1990)
Record low57° (1968)
Sun, 3085° / 69°0.08
85 °
Olde Mill, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.08 in
Chance of precipitation40%
Record high96° (2024)
Record low58° (1965)
Mon, 3185° / 69°0.1
85 °
Olde Mill, Monday, 31 August
Climate normal for this date — 60-year average.
Average high85°
Average low69°
Average precipitation0.1 in
Chance of precipitation37%
Record high94° (1962)
Record low61° (1986)
Tue, 0185° / 68°0.14
85 °
Olde Mill, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.14 in
Chance of precipitation42%
Record high94° (1993)
Record low60° (1967)
Wed, 0285° / 68°0.08
85 °
Olde Mill, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high85°
Average low68°
Average precipitation0.08 in
Chance of precipitation30%
Record high95° (2011)
Record low60° (1987)
Thu, 0384° / 68°0.13
84 °
Olde Mill, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high84°
Average low68°
Average precipitation0.13 in
Chance of precipitation37%
Record high97° (2011)
Record low56° (2017)
Fri, 0484° / 67°0.15
84 °
Olde Mill, Friday, 4 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.15 in
Chance of precipitation37%
Record high97° (2019)
Record low59° (1967)
Sat, 0584° / 67°0.17
84 °
Olde Mill, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high84°
Average low67°
Average precipitation0.17 in
Chance of precipitation30%
Record high96° (1975)
Record low55° (1997)
Sun, 0683° / 67°0.09
83 °
Olde Mill, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high83°
Average low67°
Average precipitation0.09 in
Chance of precipitation28%
Record high96° (1990)
Record low55° (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 Olde 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 Olde 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.