Monthly outlook for Middle Valley, TN: average high 91.1°, average low 69.5°. That is 2.7° above the climate normal for August. Precipitation is expected on 12 days (about 2.6 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 18 August (96.5°), the coolest 21 August (63.9°).
91.1°/69.5°
Average high / low
+2.7°
Above normal
12 / 6
Wet days / normal
2.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
90.4°
86.2°
+2.4°
18 August – 27 August
92.3°
86.3°
+3.3°
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 (9 mi).
Sun, 0992° / 69°0.19
92 °
Middle Valley, Sunday, 9 August
Light rain. High 92°, low 69°.
Pressure30.12 inHg
Wind2.2 mph S
Humidity73%
Visibility6.2 mi
Dew point73°
Mon, 1094° / 70°0.23
94 °
Middle Valley, Monday, 10 August
Rain. High 94°, low 70°.
Pressure30.15 inHg
Wind3.7 mph SW
Humidity60%
Visibility6.2 mi
Dew point70°
Tue, 1191° / 70°0.14
91 °
Middle Valley, Tuesday, 11 August
Light rain. High 91°, low 70°.
Pressure30.06 inHg
Wind4.7 mph SW
Humidity65%
Visibility6.2 mi
Dew point72°
Wed, 1293° / 69°0.32
93 °
Middle Valley, Wednesday, 12 August
Rain. High 93°, low 69°.
Pressure29.97 inHg
Wind10 mph W
Humidity51%
Visibility6.2 mi
Dew point69°
Thu, 1392° / 69°0.26
92 °
Middle Valley, Thursday, 13 August
Rain. High 92°, low 69°.
Pressure29.97 inHg
Wind5.8 mph NW
Humidity54%
Visibility—
Dew point67°
Fri, 1479° / 73°0.2
79 °
Middle Valley, Friday, 14 August
Light rain. High 79°, low 73°.
Pressure30.09 inHg
Wind3.1 mph SW
Humidity96%
Visibility—
Dew point73°
Sat, 1585° / 71°0.5
85 °
Middle Valley, Saturday, 15 August
Rain. High 85°, low 71°.
Pressure30.18 inHg
Wind8.5 mph NW
Humidity74%
Visibility—
Dew point74°
Sun, 1695° / 70°0.01
95 °
Middle Valley, Sunday, 16 August
Light rain. High 95°, low 70°.
Pressure30.09 inHg
Wind6 mph SW
Humidity50%
Visibility—
Dew point68°
Mon, 1796° / 72°0.01
96 °
Middle Valley, Monday, 17 August
Light rain. High 96°, low 72°.
Pressure30.03 inHg
Wind9.3 mph W
Humidity40%
Visibility—
Dew point64°
Tue, 1896° / 70°0.27
96 °
Middle Valley, Tuesday, 18 August
Rain. High 96°, low 70°.
Pressure29.97 inHg
Wind9.5 mph NW
Humidity40%
Visibility—
Dew point65°
Wed, 1994° / 69°0.09
94 °
Middle Valley, Wednesday, 19 August
Light rain. High 94°, low 69°.
Pressure29.91 inHg
Wind7.2 mph N
Humidity42%
Visibility—
Dew point64°
Thu, 2092° / 69°0
92 °
Middle Valley, Thursday, 20 August
Clear. High 92°, low 69°.
Pressure29.85 inHg
Wind11.1 mph N
Humidity47%
Visibility—
Dew point67°
Fri, 2183° / 64°0.13
83 °
Middle Valley, Friday, 21 August
Light rain. High 83°, low 64°.
Pressure30.03 inHg
Wind5.4 mph N
Humidity91%
Visibility—
Dew point64°
Sat, 2293° / 67°0.17
93 °
Middle Valley, Saturday, 22 August
Light rain. High 93°, low 67°.
Pressure30.00 inHg
Wind6.4 mph S
Humidity59%
Visibility—
Dew point66°
Sun, 2396° / 73°0
96 °
Middle Valley, Sunday, 23 August
Overcast. High 96°, low 73°.
Pressure30.03 inHg
Wind6.4 mph W
Humidity39%
Visibility—
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2486° / 69°0.08
86 °
Middle Valley, 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 °
Middle Valley, 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 °
Middle Valley, 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 °
Middle Valley, 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 °
Middle Valley, 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 °
Middle Valley, 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 °
Middle Valley, 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 °
Middle Valley, 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 °
Middle Valley, 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 °
Middle Valley, 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 °
Middle Valley, 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 °
Middle Valley, 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 °
Middle Valley, 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 °
Middle Valley, 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 Middle Valley, 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 Middle Valley, 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.