As of 23:22 EDT

Weather in Harrison, TN

66°Current weather

Harrison, Friday, 9 October, 23:22

Overcast. Feels like 66°. High 76°, low 59°.

Pressure30.09 inHg
Wind1 mph NW
Humidity79%
Visibility6.2 mi
Dew point57°

Monthly outlook for Harrison, TN: average high 72°, average low 53.4°. That is 0.9° above the climate normal for October. Precipitation is expected on 4 days (about 2.4 inches), against a normal of 4 days and 1.5 inches. The warmest day looks like 16 October (84.1°), the coolest 19 October (37.8°).

72°/53.4°
Average high / low
+0.9°
Above normal
4 / 4
Wet days / normal
2.4 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 October – 18 October75.1°71.5°+2°
19 October – 28 October66.8°68°-0.6°
29 October – 7 Novemberat normal64.7°—

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 (7 mi).

Sat, 1069° / 56°1.79Heavy rain
69 °Heavy rain

Harrison, Saturday, 10 October

Heavy rain. High 69°, low 56°.

Pressure29.91 inHg
Wind14.7 mph NE
Humidity91%
Visibility2.5 mi
Dew point60°
Sun, 1168° / 58°0.18Rain
68 °Rain

Harrison, Sunday, 11 October

Rain. High 68°, low 58°.

Pressure29.94 inHg
Wind10.6 mph W
Humidity72%
Visibility6.2 mi
Dew point59°
Mon, 1283° / 55°0Clear
83 °Clear

Harrison, Monday, 12 October

Clear. High 83°, low 55°.

Pressure30.09 inHg
Wind1.5 mph SW
Humidity63%
Visibility6.2 mi
Dew point64°
Tue, 1381° / 60°0Clear
81 °Clear

Harrison, Tuesday, 13 October

Clear. High 81°, low 60°.

Pressure30.06 inHg
Wind3.6 mph SW
Humidity61%
Visibility6.2 mi
Dew point62°
Wed, 1483° / 62°0Mostly clear
83 °Mostly clear

Harrison, Wednesday, 14 October

Mostly clear. High 83°, low 62°.

Pressure30.03 inHg
Wind5.5 mph SW
Humidity58%
Visibility—
Dew point64°
Thu, 1582° / 67°0Overcast
82 °Overcast

Harrison, Thursday, 15 October

Overcast. High 82°, low 67°.

Pressure30.09 inHg
Wind7.4 mph NW
Humidity66%
Visibility—
Dew point66°
Fri, 1684° / 65°0Clear
84 °Clear

Harrison, Friday, 16 October

Clear. High 84°, low 65°.

Pressure30.00 inHg
Wind9.5 mph SW
Humidity42%
Visibility—
Dew point56°
Sat, 1766° / 44°0.04Light rain
66 °Light rain

Harrison, Saturday, 17 October

Light rain. High 66°, low 44°.

Pressure30.18 inHg
Wind12.4 mph NW
Humidity36%
Visibility—
Dew point33°
Sun, 1859° / 40°0Clear
59 °Clear

Harrison, Sunday, 18 October

Clear. High 59°, low 40°.

Pressure30.33 inHg
Wind11.9 mph NE
Humidity34%
Visibility—
Dew point27°
Mon, 1965° / 38°0Partly cloudy
65 °Partly cloudy

Harrison, Monday, 19 October

Partly cloudy. High 65°, low 38°.

Pressure30.36 inHg
Wind4.2 mph N
Humidity35%
Visibility—
Dew point32°
Tue, 2068° / 43°0Overcast
68 °Overcast

Harrison, Tuesday, 20 October

Overcast. High 68°, low 43°.

Pressure30.30 inHg
Wind7.2 mph SE
Humidity32%
Visibility—
Dew point32°
Wed, 2165° / 49°0Overcast
65 °Overcast

Harrison, Wednesday, 21 October

Overcast. High 65°, low 49°.

Pressure30.24 inHg
Wind9.7 mph S
Humidity64%
Visibility—
Dew point49°
Thu, 2263° / 59°0.4Rain
63 °Rain

Harrison, Thursday, 22 October

Rain. High 63°, low 59°.

Pressure29.91 inHg
Wind14.7 mph S
Humidity92%
Visibility—
Dew point60°
Fri, 2368° / 52°0Overcast
68 °Overcast

Harrison, Friday, 23 October

Overcast. High 68°, low 52°.

Pressure29.97 inHg
Wind7.1 mph N
Humidity59%
Visibility—
Dew point50°
Sat, 2473° / 49°0Overcast
73 °Overcast

Harrison, Saturday, 24 October

Overcast. High 73°, low 49°.

Pressure30.00 inHg
Wind3.6 mph N
Humidity47%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2567° / 50°0.2Climate normal
67 °Climate normal

Harrison, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high67°
Average low50°
Average precipitation0.2 in
Chance of precipitation32%
Record high81° (1963)
Record low35° (1965)
Mon, 2668° / 50°0.14Climate normal
68 °Climate normal

Harrison, Monday, 26 October

Climate normal for this date — 60-year average.

Average high68°
Average low50°
Average precipitation0.14 in
Chance of precipitation20%
Record high83° (1963)
Record low33° (1962)
Tue, 2767° / 50°0.12Climate normal
67 °Climate normal

Harrison, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high67°
Average low50°
Average precipitation0.12 in
Chance of precipitation23%
Record high82° (1963)
Record low36° (1962)
Wed, 2867° / 49°0.14Climate normal
67 °Climate normal

Harrison, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high67°
Average low49°
Average precipitation0.14 in
Chance of precipitation30%
Record high82° (1991)
Record low33° (2001)
Thu, 2967° / 48°0.11Climate normal
67 °Climate normal

Harrison, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high67°
Average low48°
Average precipitation0.11 in
Chance of precipitation25%
Record high84° (2016)
Record low32° (1976)
Fri, 3067° / 49°0.09Climate normal
67 °Climate normal

Harrison, Friday, 30 October

Climate normal for this date — 60-year average.

Average high67°
Average low49°
Average precipitation0.09 in
Chance of precipitation17%
Record high84° (2016)
Record low32° (2017)
Sat, 3167° / 49°0.07Climate normal
67 °Climate normal

Harrison, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high67°
Average low49°
Average precipitation0.07 in
Chance of precipitation27%
Record high84° (2016)
Record low36° (2012)
Sun, 0167° / 49°0.15Climate normal
67 °Climate normal

Harrison, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high67°
Average low49°
Average precipitation0.15 in
Chance of precipitation27%
Record high84° (2016)
Record low28° (1993)
Mon, 0265° / 48°0.17Climate normal
65 °Climate normal

Harrison, Monday, 2 November

Climate normal for this date — 60-year average.

Average high65°
Average low48°
Average precipitation0.17 in
Chance of precipitation32%
Record high82° (1961)
Record low31° (1993)
Tue, 0364° / 47°0.08Climate normal
64 °Climate normal

Harrison, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high64°
Average low47°
Average precipitation0.08 in
Chance of precipitation23%
Record high82° (2016)
Record low29° (1966)
Wed, 0463° / 46°0.12Climate normal
63 °Climate normal

Harrison, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high63°
Average low46°
Average precipitation0.12 in
Chance of precipitation30%
Record high77° (1987)
Record low27° (1966)
Thu, 0563° / 46°0.13Climate normal
63 °Climate normal

Harrison, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high63°
Average low46°
Average precipitation0.13 in
Chance of precipitation30%
Record high75° (1975)
Record low25° (1991)
Fri, 0663° / 45°0.08Climate normal
63 °Climate normal

Harrison, Friday, 6 November

Climate normal for this date — 60-year average.

Average high63°
Average low45°
Average precipitation0.08 in
Chance of precipitation28%
Record high77° (2015)
Record low26° (1967)
Sat, 0763° / 46°0.15Climate normal
63 °Climate normal

Harrison, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high63°
Average low46°
Average precipitation0.15 in
Chance of precipitation35%
Record high79° (2024)
Record low30° (1967)

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 Harrison, 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 Harrison, 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.