Monthly outlook for Harbor Heights, TN: average high 64.2°, average low 49.1°. That is 0.5° above the climate normal for October. Precipitation is expected on 4 days (about 4.0 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 30 October (76.7°), the coolest 9 November (38.6°).
64.2°/49.1°
Average high / low
+0.5°
Above normal
4 / 4
Wet days / normal
4.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
29 October – 7 November
67.6°
64.7°
+1.6°
8 November – 17 November
58.6°
60.2°
-0.9°
18 November – 27 November
at normal
57.8°
—
October records over 66 years
97.7°3 October 2019All-time high
31.8°30 October 2017All-time low
Climate normals and records are computed from the nearest reference point — Chattanooga (4 mi).
Fri, 3077° / 47°0
77 °
Harbor Heights, Friday, 30 October
Overcast. High 77°, low 47°.
Pressure30.24 inHg
Wind6.3 mph NE
Humidity44%
Visibility6.2 mi
Dew point48°
Sat, 3169° / 56°0
69 °
Harbor Heights, Saturday, 31 October
Overcast. High 69°, low 56°.
Pressure30.33 inHg
Wind2.1 mph E
Humidity55%
Visibility6.2 mi
Dew point50°
Sun, 0161° / 53°1.04
61 °
Harbor Heights, Sunday, 1 November
Rain. High 61°, low 53°.
Pressure30.39 inHg
Wind2.4 mph S
Humidity95%
Visibility1.7 mi
Dew point52°
Mon, 0268° / 54°0.02
68 °
Harbor Heights, Monday, 2 November
Light rain. High 68°, low 54°.
Pressure30.24 inHg
Wind7.2 mph SE
Humidity66%
Visibility—
Dew point53°
Tue, 0372° / 54°0
72 °
Harbor Heights, Tuesday, 3 November
Overcast. High 72°, low 54°.
Pressure30.06 inHg
Wind11.1 mph S
Humidity65%
Visibility—
Dew point56°
Wed, 0471° / 63°2.3
71 °
Harbor Heights, Wednesday, 4 November
Heavy rain. High 71°, low 63°.
Pressure29.85 inHg
Wind12.1 mph S
Humidity83%
Visibility—
Dew point65°
Thu, 0567° / 54°0.44
67 °
Harbor Heights, Thursday, 5 November
Rain. High 67°, low 54°.
Pressure29.71 inHg
Wind9.6 mph SW
Humidity71%
Visibility—
Dew point56°
Fri, 0661° / 53°0.01
61 °
Harbor Heights, Friday, 6 November
Light rain. High 61°, low 53°.
Pressure29.83 inHg
Wind6 mph NW
Humidity81%
Visibility—
Dew point54°
Sat, 0755° / 49°0
55 °
Harbor Heights, Saturday, 7 November
Overcast. High 55°, low 49°.
Pressure30.03 inHg
Wind9.2 mph N
Humidity75%
Visibility—
Dew point46°
Sun, 0860° / 41°0
60 °
Harbor Heights, Sunday, 8 November
Clear. High 60°, low 41°.
Pressure30.09 inHg
Wind8.5 mph N
Humidity37%
Visibility—
Dew point31°
Mon, 0961° / 39°0
61 °
Harbor Heights, Monday, 9 November
Clear. High 61°, low 39°.
Pressure30.00 inHg
Wind6 mph N
Humidity34%
Visibility—
Dew point29°
Tue, 1060° / 45°0
60 °
Harbor Heights, Tuesday, 10 November
Overcast. High 60°, low 45°.
Pressure29.83 inHg
Wind12.8 mph NW
Humidity40%
Visibility—
Dew point34°
Wed, 1158° / 39°0
58 °
Harbor Heights, Wednesday, 11 November
Overcast. High 58°, low 39°.
Pressure29.94 inHg
Wind7 mph SW
Humidity40%
Visibility—
Dew point31°
Thu, 1253° / 49°0.2
53 °
Harbor Heights, Thursday, 12 November
Rain. High 53°, low 49°.
Pressure29.94 inHg
Wind6.2 mph SW
Humidity92%
Visibility—
Dew point47°
Fri, 1359° / 41°0.01
59 °
Harbor Heights, Friday, 13 November
Light rain. High 59°, low 41°.
Pressure30.06 inHg
Wind2.7 mph NW
Humidity50%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 1459° / 41°0.09
59 °
Harbor Heights, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high59°
Average low41°
Average precipitation0.09 in
Chance of precipitation32%
Record high74° (1993)
Record low26° (1986)
Sun, 1558° / 42°0.19
58 °
Harbor Heights, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.19 in
Chance of precipitation32%
Record high74° (2005)
Record low23° (1969)
Mon, 1660° / 42°0.1
60 °
Harbor Heights, Monday, 16 November
Climate normal for this date — 60-year average.
Average high60°
Average low42°
Average precipitation0.1 in
Chance of precipitation33%
Record high73° (1964)
Record low27° (1969)
Tue, 1759° / 42°0.11
59 °
Harbor Heights, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high59°
Average low42°
Average precipitation0.11 in
Chance of precipitation28%
Record high77° (1978)
Record low24° (1997)
Wed, 1860° / 42°0.1
60 °
Harbor Heights, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high60°
Average low42°
Average precipitation0.1 in
Chance of precipitation25%
Record high77° (2016)
Record low24° (2014)
Thu, 1960° / 42°0.11
60 °
Harbor Heights, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high60°
Average low42°
Average precipitation0.11 in
Chance of precipitation28%
Record high75° (2025)
Record low22° (2014)
Fri, 2059° / 42°0.1
59 °
Harbor Heights, Friday, 20 November
Climate normal for this date — 60-year average.
Average high59°
Average low42°
Average precipitation0.1 in
Chance of precipitation33%
Record high71° (1979)
Record low28° (2022)
Sat, 2157° / 41°0.14
57 °
Harbor Heights, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.14 in
Chance of precipitation27%
Record high71° (2025)
Record low27° (2000)
Sun, 2257° / 41°0.12
57 °
Harbor Heights, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.12 in
Chance of precipitation33%
Record high75° (2025)
Record low24° (2008)
Mon, 2357° / 40°0.13
57 °
Harbor Heights, Monday, 23 November
Climate normal for this date — 60-year average.
Average high57°
Average low40°
Average precipitation0.13 in
Chance of precipitation33%
Record high71° (1973)
Record low24° (1970)
Tue, 2457° / 41°0.16
57 °
Harbor Heights, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.16 in
Chance of precipitation32%
Record high70° (2025)
Record low19° (1970)
Wed, 2557° / 40°0.15
57 °
Harbor Heights, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high57°
Average low40°
Average precipitation0.15 in
Chance of precipitation28%
Record high71° (2010)
Record low21° (1970)
Thu, 2658° / 40°0.15
58 °
Harbor Heights, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high58°
Average low40°
Average precipitation0.15 in
Chance of precipitation33%
Record high70° (1966)
Record low26° (1991)
Fri, 2756° / 42°0.19
56 °
Harbor Heights, Friday, 27 November
Climate normal for this date — 60-year average.
Average high56°
Average low42°
Average precipitation0.19 in
Chance of precipitation43%
Record high74° (1990)
Record low27° (2013)
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 Harbor Heights, 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 Harbor Heights, 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.