As of 16:20 EDT

Weather in Harrison, TN

85°Current weather

Harrison, Saturday, 8 August, 16:20

Light rain. Feels like 94°. High 86°, low 70°.

Pressure30.06 inHg
Wind3.1 mph SW
Humidity74%
Visibility6.2 mi
Dew point75°

Monthly outlook for Harrison, TN: average high 87.1°, average low 69.5°. That is 0.4° above the climate normal for August. Precipitation is expected on 11 days (about 2.3 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 12 August (94.8°), the coolest 16 August (60.5°).

87.1°/69.5°
Average high / low
+0.4°
Above normal
11 / 6
Wet days / normal
2.3 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
8 August – 17 August87.5°86.2°+0.7°
18 August – 27 August86.4°86.3°+0°
28 August – 6 Septemberat normal84.6°

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°0.06Light rain
86 °Light rain

Harrison, Sunday, 9 August

Light rain. High 86°, low 71°.

Pressure30.12 inHg
Wind2.8 mph S
Humidity55%
Visibility6.2 mi
Dew point69°
Mon, 1095° / 72°0.13Rain
95 °Rain

Harrison, Monday, 10 August

Rain. High 95°, low 72°.

Pressure30.12 inHg
Wind3.1 mph SW
Humidity54%
Visibility6.2 mi
Dew point70°
Tue, 1194° / 71°0.1Light rain
94 °Light rain

Harrison, Tuesday, 11 August

Light rain. High 94°, low 71°.

Pressure30.06 inHg
Wind5.5 mph SW
Humidity48%
Visibility6.2 mi
Dew point68°
Wed, 1295° / 70°0.02Light rain
95 °Light rain

Harrison, Wednesday, 12 August

Light rain. High 95°, low 70°.

Pressure29.97 inHg
Wind7.9 mph W
Humidity50%
Visibility6.2 mi
Dew point69°
Thu, 1392° / 70°0.04Light rain
92 °Light rain

Harrison, Thursday, 13 August

Light rain. High 92°, low 70°.

Pressure29.94 inHg
Wind10.2 mph W
Humidity45%
Visibility
Dew point65°
Fri, 1474° / 70°0.42Rain
74 °Rain

Harrison, Friday, 14 August

Rain. High 74°, low 70°.

Pressure30.06 inHg
Wind7.1 mph SW
Humidity95%
Visibility
Dew point71°
Sat, 1586° / 64°0Mostly clear
86 °Mostly clear

Harrison, Saturday, 15 August

Mostly clear. High 86°, low 64°.

Pressure30.21 inHg
Wind7.7 mph NE
Humidity41%
Visibility
Dew point55°
Sun, 1687° / 60°0Overcast
87 °Overcast

Harrison, Sunday, 16 August

Overcast. High 87°, low 60°.

Pressure30.21 inHg
Wind5.5 mph N
Humidity47%
Visibility
Dew point60°
Mon, 1780° / 67°0.38Rain
80 °Rain

Harrison, Monday, 17 August

Rain. High 80°, low 67°.

Pressure30.12 inHg
Wind6.4 mph S
Humidity76%
Visibility
Dew point71°
Tue, 1884° / 70°0.35Rain
84 °Rain

Harrison, Tuesday, 18 August

Rain. High 84°, low 70°.

Pressure30.00 inHg
Wind7.5 mph SW
Humidity69%
Visibility
Dew point71°
Wed, 1994° / 72°0Overcast
94 °Overcast

Harrison, Wednesday, 19 August

Overcast. High 94°, low 72°.

Pressure29.91 inHg
Wind3.8 mph NW
Humidity45%
Visibility
Dew point65°
Thu, 2091° / 71°0.14Light rain
91 °Light rain

Harrison, Thursday, 20 August

Light rain. High 91°, low 71°.

Pressure29.94 inHg
Wind5.3 mph SW
Humidity65%
Visibility
Dew point71°
Fri, 2183° / 74°0.2Light rain
83 °Light rain

Harrison, Friday, 21 August

Light rain. High 83°, low 74°.

Pressure29.91 inHg
Wind6.9 mph W
Humidity82%
Visibility
Dew point75°
Sat, 2284° / 71°0.34Rain
84 °Rain

Harrison, Saturday, 22 August

Rain. High 84°, low 71°.

Pressure29.88 inHg
Wind8.7 mph W
Humidity79%
Visibility
Dew point75°
Sun, 2383° / 69°0Overcast
83 °Overcast

Harrison, Sunday, 23 August

Overcast. High 83°, low 69°.

Pressure30.00 inHg
Wind5.7 mph NE
Humidity69%
Visibility
Dew point65°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2486° / 69°0.08Climate normal
86 °Climate normal

Harrison, 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°0.11Climate normal
86 °Climate normal

Harrison, 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°0.14Climate normal
86 °Climate normal

Harrison, 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°0.1Climate normal
86 °Climate normal

Harrison, 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°0.1Climate normal
86 °Climate normal

Harrison, 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°0.1Climate normal
86 °Climate normal

Harrison, 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°0.08Climate normal
85 °Climate normal

Harrison, 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°0.1Climate normal
85 °Climate normal

Harrison, 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°0.14Climate normal
85 °Climate normal

Harrison, 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°0.08Climate normal
85 °Climate normal

Harrison, 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°0.13Climate normal
84 °Climate normal

Harrison, 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°0.15Climate normal
84 °Climate normal

Harrison, 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°0.17Climate normal
84 °Climate normal

Harrison, 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°0.09Climate normal
83 °Climate normal

Harrison, 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 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.