Weather in South Tunnel, TN
South Tunnel, Sunday, 9 August, 08:11
Mostly clear. Feels like 72°. High 88°, low 69°.
Monthly outlook for South Tunnel, TN: average high 88.8°, average low 69.8°. That is 1.7° above the climate normal for August. Precipitation is expected on 6 days (about 0.9 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 16 August (96.8°), the coolest 24 August (60.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 90.7° | 85.8° | +2.7° |
| 19 August – 28 August | 85.7° | 85.8° | -0.1° |
| 29 August – 7 September | at normal | 83.8° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Portland (8 mi).
0
South Tunnel, Monday, 10 August
Clear. High 92°, low 70°.
0South Tunnel, Tuesday, 11 August
Clear. High 92°, low 71°.
0.33
South Tunnel, Wednesday, 12 August
Rain. High 91°, low 73°.
0.15South Tunnel, Thursday, 13 August
Light rain. High 88°, low 70°.
0.01South Tunnel, Friday, 14 August
Light rain. High 93°, low 76°.
0South Tunnel, Saturday, 15 August
Mostly clear. High 94°, low 73°.
0
South Tunnel, Sunday, 16 August
Partly cloudy. High 97°, low 76°.
0South Tunnel, Monday, 17 August
Partly cloudy. High 87°, low 72°.
0South Tunnel, Tuesday, 18 August
Light rain. High 85°, low 67°.
0.06South Tunnel, Wednesday, 19 August
Light rain. High 92°, low 73°.
0.15South Tunnel, Thursday, 20 August
Rain. High 81°, low 67°.
0South Tunnel, Friday, 21 August
Clear. High 86°, low 62°.
0.13South Tunnel, Saturday, 22 August
Light rain. High 92°, low 69°.
0.04South Tunnel, Sunday, 23 August
Light rain. High 82°, low 67°.
0South Tunnel, Monday, 24 August
Clear. High 81°, low 60°.
0.07South Tunnel, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.12
South Tunnel, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.08South Tunnel, Thursday, 27 August
Climate normal for this date — 60-year average.
0.09South Tunnel, Friday, 28 August
Climate normal for this date — 60-year average.
0.11South Tunnel, Saturday, 29 August
Climate normal for this date — 60-year average.
0.16South Tunnel, Sunday, 30 August
Climate normal for this date — 60-year average.
0.18South Tunnel, Monday, 31 August
Climate normal for this date — 60-year average.
0.18South Tunnel, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.15South Tunnel, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.15South Tunnel, Thursday, 3 September
Climate normal for this date — 60-year average.
0.07South Tunnel, Friday, 4 September
Climate normal for this date — 60-year average.
0.13South Tunnel, Saturday, 5 September
Climate normal for this date — 60-year average.
0.07South Tunnel, Sunday, 6 September
Climate normal for this date — 60-year average.
0.03South Tunnel, 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 South Tunnel, 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 South Tunnel, 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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