Weather in Port Royal, TN
Port Royal, Sunday, 9 August, 07:26
Partly cloudy. Feels like 70°. High 88°, low 69°.
Monthly outlook for Port Royal, TN: average high 93.7°, average low 73.9°. That is 3.6° above the climate normal for August. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 21 August (105.3°), the coolest 9 August (69°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 90.4° | 87.3° | +1.7° |
| 19 August – 28 August | 99.4° | 87.5° | +6.6° |
| 29 August – 7 September | at normal | 85.2° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Clarksville (11 mi).
0
Port Royal, Monday, 10 August
Clear. High 93°, low 74°.
0
Port Royal, Tuesday, 11 August
Overcast. High 94°, low 73°.
0.21
Port Royal, Wednesday, 12 August
Rain. High 94°, low 74°.
0.11Port Royal, Thursday, 13 August
Light rain. High 87°, low 72°.
0.18Port Royal, Friday, 14 August
Light rain. High 94°, low 73°.
0.03Port Royal, Saturday, 15 August
Light rain. High 89°, low 69°.
0Port Royal, Sunday, 16 August
Partly cloudy. High 87°, low 73°.
0Port Royal, Monday, 17 August
Overcast. High 89°, low 74°.
0Port Royal, Tuesday, 18 August
Clear. High 88°, low 74°.
0Port Royal, Wednesday, 19 August
Overcast. High 92°, low 72°.
0Port Royal, Thursday, 20 August
Overcast. High 100°, low 77°.
0Port Royal, Friday, 21 August
Clear. High 105°, low 78°.
0Port Royal, Saturday, 22 August
Clear. High 101°, low 76°.
0Port Royal, Sunday, 23 August
Clear. High 100°, low 79°.
0.02Port Royal, Monday, 24 August
Light rain. High 99°, low 77°.
0.07Port Royal, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.08
Port Royal, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.09Port Royal, Thursday, 27 August
Climate normal for this date — 60-year average.
0.08Port Royal, Friday, 28 August
Climate normal for this date — 60-year average.
0.12Port Royal, Saturday, 29 August
Climate normal for this date — 60-year average.
0.15Port Royal, Sunday, 30 August
Climate normal for this date — 60-year average.
0.2Port Royal, Monday, 31 August
Climate normal for this date — 60-year average.
0.16Port Royal, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.12Port Royal, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.12Port Royal, Thursday, 3 September
Climate normal for this date — 60-year average.
0.07Port Royal, Friday, 4 September
Climate normal for this date — 60-year average.
0.12Port Royal, Saturday, 5 September
Climate normal for this date — 60-year average.
0.07Port Royal, Sunday, 6 September
Climate normal for this date — 60-year average.
0.03
Port Royal, Monday, 7 September
Climate normal for this date — 60-year average.
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 Port Royal, 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 Port Royal, 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.
Sun and moon today
Weather history
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