Monthly outlook for Roan Hill, TN: average high 83.3°, average low 66.2°. That is 1° above the climate normal for August. Precipitation is expected on 13 days (about 5.1 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 12 August (88.6°), the coolest 21 August (60.5°).
83.3°/66.2°
Average high / low
+1°
Above normal
13 / 6
Wet days / normal
5.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
84.2°
81.5°
+1.5°
19 August – 28 August
81.8°
81.5°
+0.2°
29 August – 7 September
at normal
80.1°
—
August records over 66 years
96.6°16 August 2007All-time high
46.9°29 August 1986All-time low
Climate normals and records are computed from the nearest reference point — Johnson City (3 mi).
Mon, 1082° / 69°0.09
82 °
Roan Hill, Monday, 10 August
Light rain. High 82°, low 69°.
Pressure30.18 inHg
Wind6.1 mph W
Humidity65%
Visibility6.2 mi
Dew point67°
Tue, 1185° / 67°0.05
85 °
Roan Hill, Tuesday, 11 August
Light rain. High 85°, low 67°.
Pressure30.09 inHg
Wind5.5 mph W
Humidity66%
Visibility6.2 mi
Dew point68°
Wed, 1289° / 64°1.57
89 °
Roan Hill, Wednesday, 12 August
Heavy rain. High 89°, low 64°.
Pressure29.97 inHg
Wind10.3 mph W
Humidity61%
Visibility6.2 mi
Dew point68°
Thu, 1382° / 64°0.3
82 °
Roan Hill, Thursday, 13 August
Rain. High 82°, low 64°.
Pressure30.03 inHg
Wind9.4 mph W
Humidity70%
Visibility6.2 mi
Dew point69°
Fri, 1481° / 69°0.7
81 °
Roan Hill, Friday, 14 August
Rain. High 81°, low 69°.
Pressure30.15 inHg
Wind6.3 mph W
Humidity96%
Visibility—
Dew point71°
Sat, 1581° / 69°0.54
81 °
Roan Hill, Saturday, 15 August
Rain. High 81°, low 69°.
Pressure30.21 inHg
Wind4.1 mph NW
Humidity76%
Visibility—
Dew point71°
Sun, 1687° / 67°0.12
87 °
Roan Hill, Sunday, 16 August
Light rain. High 87°, low 67°.
Pressure30.12 inHg
Wind6.3 mph W
Humidity73%
Visibility—
Dew point73°
Mon, 1785° / 71°0.61
85 °
Roan Hill, Monday, 17 August
Rain. High 85°, low 71°.
Pressure30.00 inHg
Wind11.2 mph W
Humidity65%
Visibility—
Dew point70°
Tue, 1885° / 65°0
85 °
Roan Hill, Tuesday, 18 August
Partly cloudy. High 85°, low 65°.
Pressure29.97 inHg
Wind9.8 mph W
Humidity57%
Visibility—
Dew point64°
Wed, 1986° / 68°0.24
86 °
Roan Hill, Wednesday, 19 August
Light rain. High 86°, low 68°.
Pressure29.85 inHg
Wind12.3 mph W
Humidity52%
Visibility—
Dew point64°
Thu, 2077° / 68°0.47
77 °
Roan Hill, Thursday, 20 August
Light rain. High 77°, low 68°.
Pressure29.85 inHg
Wind7.9 mph W
Humidity91%
Visibility—
Dew point72°
Fri, 2179° / 61°0
79 °
Roan Hill, Friday, 21 August
Clear. High 79°, low 61°.
Pressure29.94 inHg
Wind5.5 mph NW
Humidity51%
Visibility—
Dew point56°
Sat, 2283° / 62°0.06
83 °
Roan Hill, Saturday, 22 August
Light rain. High 83°, low 62°.
Pressure30.00 inHg
Wind4.9 mph W
Humidity75%
Visibility—
Dew point65°
Sun, 2381° / 66°0.05
81 °
Roan Hill, Sunday, 23 August
Light rain. High 81°, low 66°.
Pressure30.06 inHg
Wind8.1 mph W
Humidity69%
Visibility—
Dew point67°
Mon, 2485° / 64°0.01
85 °
Roan Hill, Monday, 24 August
Light rain. High 85°, low 64°.
Pressure30.09 inHg
Wind5.4 mph NW
Humidity47%
Visibility—
Dew point60°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2582° / 64°0.07
82 °
Roan Hill, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.07 in
Chance of precipitation25%
Record high93° (2023)
Record low56° (2013)
Wed, 2682° / 63°0.07
82 °
Roan Hill, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low63°
Average precipitation0.07 in
Chance of precipitation27%
Record high92° (2016)
Record low55° (2015)
Thu, 2782° / 64°0.15
82 °
Roan Hill, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.15 in
Chance of precipitation38%
Record high91° (2016)
Record low53° (1968)
Fri, 2882° / 64°0.08
82 °
Roan Hill, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low64°
Average precipitation0.08 in
Chance of precipitation32%
Record high91° (2021)
Record low52° (1968)
Sat, 2982° / 63°0.06
82 °
Roan Hill, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high82°
Average low63°
Average precipitation0.06 in
Chance of precipitation28%
Record high92° (2024)
Record low47° (1986)
Sun, 3082° / 63°0.06
82 °
Roan Hill, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high82°
Average low63°
Average precipitation0.06 in
Chance of precipitation38%
Record high94° (2024)
Record low49° (1986)
Mon, 3181° / 64°0.1
81 °
Roan Hill, Monday, 31 August
Climate normal for this date — 60-year average.
Average high81°
Average low64°
Average precipitation0.1 in
Chance of precipitation43%
Record high90° (2024)
Record low52° (1976)
Tue, 0180° / 63°0.15
80 °
Roan Hill, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.15 in
Chance of precipitation40%
Record high90° (1973)
Record low52° (1999)
Wed, 0280° / 63°0.08
80 °
Roan Hill, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high80°
Average low63°
Average precipitation0.08 in
Chance of precipitation35%
Record high91° (2011)
Record low49° (1967)
Thu, 0380° / 62°0.1
80 °
Roan Hill, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high80°
Average low62°
Average precipitation0.1 in
Chance of precipitation42%
Record high93° (2011)
Record low49° (1967)
Fri, 0479° / 62°0.15
79 °
Roan Hill, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.15 in
Chance of precipitation38%
Record high92° (2019)
Record low50° (1997)
Sat, 0579° / 62°0.17
79 °
Roan Hill, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.17 in
Chance of precipitation40%
Record high91° (1975)
Record low47° (1997)
Sun, 0679° / 62°0.12
79 °
Roan Hill, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high79°
Average low62°
Average precipitation0.12 in
Chance of precipitation38%
Record high89° (2023)
Record low51° (1984)
Mon, 0779° / 61°0.11
79 °
Roan Hill, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low61°
Average precipitation0.11 in
Chance of precipitation32%
Record high91° (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 Roan Hill, 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 Roan Hill, 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.