As of 15:41 EDT

Weather in Harriman, TN

85°Current weather

Harriman, Sunday, 9 August, 15:41

Rain. Feels like 95°. High 86°, low 70°.

Pressure30.06 inHg
Wind6.8 mph S
Humidity74%
Visibility6.2 mi
Dew point76°

Monthly outlook for Harriman, TN: average high 94.6°, average low 72°. That is 5.5° above the climate normal for August. Precipitation is expected on 5 days (about 1.1 inches), against a normal of 7 days and 2.1 inches. The warmest day looks like 18 August (100.3°), the coolest 12 August (69.3°).

94.6°/72°
Average high / low
+5.5°
Above normal
5 / 7
Wet days / normal
1.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 August – 18 August94.3°84.7°+5.3°
19 August – 28 August95.1°84.7°+5.8°
29 August – 7 Septemberat normal83.2°

August records over 66 years

102.6°16 August 2007All-time high
54.5°29 August 1986All-time low

Climate normals and records are computed from the nearest reference point — Oak Ridge (15 mi).

Mon, 1087° / 71°0Overcast
87 °Overcast

Harriman, Monday, 10 August

Overcast. High 87°, low 71°.

Pressure30.12 inHg
Wind3.5 mph S
Humidity63%
Visibility6.2 mi
Dew point71°
Tue, 1193° / 73°0.06Light rain
93 °Light rain

Harriman, Tuesday, 11 August

Light rain. High 93°, low 73°.

Pressure30.06 inHg
Wind4 mph SW
Humidity54%
Visibility6.2 mi
Dew point70°
Wed, 1295° / 69°0.01Light rain
95 °Light rain

Harriman, Wednesday, 12 August

Light rain. High 95°, low 69°.

Pressure29.94 inHg
Wind9.1 mph SW
Humidity48%
Visibility6.2 mi
Dew point68°
Thu, 1392° / 72°0.27Rain
92 °Rain

Harriman, Thursday, 13 August

Rain. High 92°, low 72°.

Pressure30.00 inHg
Wind4.5 mph SW
Humidity64%
Visibility6.2 mi
Dew point72°
Fri, 1496° / 72°0Overcast
96 °Overcast

Harriman, Friday, 14 August

Overcast. High 96°, low 72°.

Pressure30.06 inHg
Wind5.3 mph W
Humidity43%
Visibility
Dew point66°
Sat, 1598° / 75°0Mostly clear
98 °Mostly clear

Harriman, Saturday, 15 August

Mostly clear. High 98°, low 75°.

Pressure30.12 inHg
Wind4.1 mph SW
Humidity38%
Visibility
Dew point65°
Sun, 1698° / 73°0Clear
98 °Clear

Harriman, Sunday, 16 August

Clear. High 98°, low 73°.

Pressure30.03 inHg
Wind9.7 mph W
Humidity31%
Visibility
Dew point59°
Mon, 1799° / 73°0Partly cloudy
99 °Partly cloudy

Harriman, Monday, 17 August

Partly cloudy. High 99°, low 73°.

Pressure29.97 inHg
Wind6.5 mph NW
Humidity34%
Visibility
Dew point62°
Tue, 18100° / 75°0Clear
100 °Clear

Harriman, Tuesday, 18 August

Clear. High 100°, low 75°.

Pressure30.00 inHg
Wind4 mph SW
Humidity33%
Visibility
Dew point63°
Wed, 19100° / 74°0Clear
100 °Clear

Harriman, Wednesday, 19 August

Clear. High 100°, low 74°.

Pressure30.00 inHg
Wind5.7 mph NW
Humidity35%
Visibility
Dew point64°
Thu, 2099° / 69°0.01Light rain
99 °Light rain

Harriman, Thursday, 20 August

Light rain. High 99°, low 69°.

Pressure29.97 inHg
Wind5.2 mph S
Humidity45%
Visibility
Dew point67°
Fri, 2196° / 71°0.11Light rain
96 °Light rain

Harriman, Friday, 21 August

Light rain. High 96°, low 71°.

Pressure29.88 inHg
Wind8.4 mph W
Humidity41%
Visibility
Dew point64°
Sat, 2293° / 73°0.13Rain
93 °Rain

Harriman, Saturday, 22 August

Rain. High 93°, low 73°.

Pressure29.88 inHg
Wind8.6 mph NW
Humidity43%
Visibility
Dew point65°
Sun, 2391° / 70°0Overcast
91 °Overcast

Harriman, Sunday, 23 August

Overcast. High 91°, low 70°.

Pressure29.97 inHg
Wind5.3 mph E
Humidity47%
Visibility
Dew point66°
Mon, 2492° / 71°0.01Light rain
92 °Light rain

Harriman, Monday, 24 August

Light rain. High 92°, low 71°.

Pressure30.06 inHg
Wind4.3 mph S
Humidity43%
Visibility
Dew point64°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2585° / 68°0.08Climate normal
85 °Climate normal

Harriman, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high85°
Average low68°
Average precipitation0.08 in
Chance of precipitation33%
Record high99° (2023)
Record low59° (2025)
Wed, 2685° / 68°0.12Climate normal
85 °Climate normal

Harriman, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high85°
Average low68°
Average precipitation0.12 in
Chance of precipitation35%
Record high95° (2023)
Record low56° (2025)
Thu, 2785° / 69°0.1Climate normal
85 °Climate normal

Harriman, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high85°
Average low69°
Average precipitation0.1 in
Chance of precipitation35%
Record high93° (2024)
Record low56° (2025)
Fri, 2885° / 68°0.07Climate normal
85 °Climate normal

Harriman, Friday, 28 August

Climate normal for this date — 60-year average.

Average high85°
Average low68°
Average precipitation0.07 in
Chance of precipitation27%
Record high96° (2024)
Record low56° (1967)
Sat, 2985° / 68°0.07Climate normal
85 °Climate normal

Harriman, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high85°
Average low68°
Average precipitation0.07 in
Chance of precipitation32%
Record high97° (2024)
Record low55° (1986)
Sun, 3084° / 68°0.1Climate normal
84 °Climate normal

Harriman, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high84°
Average low68°
Average precipitation0.1 in
Chance of precipitation43%
Record high96° (2024)
Record low57° (1965)
Mon, 3184° / 68°0.11Climate normal
84 °Climate normal

Harriman, Monday, 31 August

Climate normal for this date — 60-year average.

Average high84°
Average low68°
Average precipitation0.11 in
Chance of precipitation32%
Record high93° (2024)
Record low58° (1976)
Tue, 0183° / 68°0.15Climate normal
83 °Climate normal

Harriman, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high83°
Average low68°
Average precipitation0.15 in
Chance of precipitation42%
Record high93° (1993)
Record low57° (1967)
Wed, 0284° / 67°0.12Climate normal
84 °Climate normal

Harriman, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high84°
Average low67°
Average precipitation0.12 in
Chance of precipitation37%
Record high94° (2011)
Record low55° (1967)
Thu, 0383° / 67°0.14Climate normal
83 °Climate normal

Harriman, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high83°
Average low67°
Average precipitation0.14 in
Chance of precipitation45%
Record high96° (2011)
Record low54° (2017)
Fri, 0483° / 67°0.09Climate normal
83 °Climate normal

Harriman, Friday, 4 September

Climate normal for this date — 60-year average.

Average high83°
Average low67°
Average precipitation0.09 in
Chance of precipitation37%
Record high97° (2019)
Record low57° (1997)
Sat, 0582° / 66°0.15Climate normal
82 °Climate normal

Harriman, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high82°
Average low66°
Average precipitation0.15 in
Chance of precipitation33%
Record high94° (2007)
Record low55° (1997)
Sun, 0682° / 66°0.09Climate normal
82 °Climate normal

Harriman, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high82°
Average low66°
Average precipitation0.09 in
Chance of precipitation33%
Record high94° (1998)
Record low56° (1984)
Mon, 0782° / 65°0.1Climate normal
82 °Climate normal

Harriman, Monday, 7 September

Climate normal for this date — 60-year average.

Average high82°
Average low65°
Average precipitation0.1 in
Chance of precipitation28%
Record high95° (1990)
Record low49° (2017)

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 Harriman, 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 Harriman, 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.