Weather in Heiskell, TN
Heiskell, Saturday, 8 August, 17:10
Overcast. Feels like 91°. High 85°, low 70°.
Monthly outlook for Heiskell, TN: average high 86.3°, average low 69.1°. That is 0.9° above the climate normal for August. Precipitation is expected on 10 days (about 2.7 inches), against a normal of 7 days and 1.9 inches. The warmest day looks like 12 August (93.7°), the coolest 16 August (60.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 8 August – 17 August | 86.3° | 84.6° | +0.9° |
| 18 August – 27 August | 86.4° | 84.7° | +0.9° |
| 28 August – 6 September | at normal | 83.6° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Knoxville (10 mi).
0.08
Heiskell, Sunday, 9 August
Light rain. High 86°, low 71°.
0Heiskell, Monday, 10 August
Overcast. High 91°, low 73°.
0.17Heiskell, Tuesday, 11 August
Rain. High 91°, low 72°.
0.04Heiskell, Wednesday, 12 August
Light rain. High 94°, low 71°.
0.06Heiskell, Thursday, 13 August
Light rain. High 90°, low 70°.
0.83Heiskell, Friday, 14 August
Rain. High 72°, low 66°.
0
Heiskell, Saturday, 15 August
Clear. High 83°, low 61°.
0Heiskell, Sunday, 16 August
Overcast. High 85°, low 61°.
0.07Heiskell, Monday, 17 August
Light rain. High 86°, low 68°.
0.22Heiskell, Tuesday, 18 August
Light rain. High 85°, low 71°.
0Heiskell, Wednesday, 19 August
Light rain. High 92°, low 71°.
0.27Heiskell, Thursday, 20 August
Rain. High 87°, low 72°.
0.48Heiskell, Friday, 21 August
Rain. High 87°, low 71°.
0.39Heiskell, Saturday, 22 August
Rain. High 85°, low 71°.
0Heiskell, Sunday, 23 August
Overcast. High 82°, low 67°.
0.09
Heiskell, Monday, 24 August
Climate normal for this date — 60-year average.
0.07Heiskell, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.12Heiskell, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.09Heiskell, Thursday, 27 August
Climate normal for this date — 60-year average.
0.07Heiskell, Friday, 28 August
Climate normal for this date — 60-year average.
0.06Heiskell, Saturday, 29 August
Climate normal for this date — 60-year average.
0.08
Heiskell, Sunday, 30 August
Climate normal for this date — 60-year average.
0.11Heiskell, Monday, 31 August
Climate normal for this date — 60-year average.
0.14Heiskell, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.11Heiskell, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.12Heiskell, Thursday, 3 September
Climate normal for this date — 60-year average.
0.09Heiskell, Friday, 4 September
Climate normal for this date — 60-year average.
0.15Heiskell, Saturday, 5 September
Climate normal for this date — 60-year average.
0.09Heiskell, Sunday, 6 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 Heiskell, 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 Heiskell, 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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