Weather in Johnson City, TN
Johnson City, Sunday, 9 August, 04:25
Overcast. Feels like 66°. High 83°, low 66°.
Monthly outlook for Johnson City, TN: average high 86.4°, average low 68°. That is 2.7° above the climate normal for August. Precipitation is expected on 9 days (about 3.1 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 23 August (97.4°), the coolest 18 August (61.7°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 83° | 81.5° | +0.8° |
| 19 August – 28 August | 92° | 81.5° | +5.8° |
| 29 August – 7 September | at normal | 80.1° | — |
August records over 66 years
0.09
Johnson City, Monday, 10 August
Rain. High 84°, low 71°.
0.03Johnson City, Tuesday, 11 August
Light rain. High 88°, low 68°.
0.38Johnson City, Wednesday, 12 August
Rain. High 87°, low 69°.
0.19Johnson City, Thursday, 13 August
Light rain. High 80°, low 68°.
0.56Johnson City, Friday, 14 August
Rain. High 81°, low 67°.
0.56Johnson City, Saturday, 15 August
Rain. High 74°, low 64°.
0.45Johnson City, Sunday, 16 August
Rain. High 86°, low 66°.
0.47Johnson City, Monday, 17 August
Rain. High 83°, low 68°.
0
Johnson City, Tuesday, 18 August
Clear. High 83°, low 62°.
0Johnson City, Wednesday, 19 August
Clear. High 86°, low 63°.
0
Johnson City, Thursday, 20 August
Partly cloudy. High 88°, low 67°.
0Johnson City, Friday, 21 August
Overcast. High 92°, low 71°.
0Johnson City, Saturday, 22 August
Clear. High 96°, low 75°.
0.02Johnson City, Sunday, 23 August
Light rain. High 97°, low 75°.
0.06Johnson City, Monday, 24 August
Light rain. High 93°, low 70°.
0.07Johnson City, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.07Johnson City, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.15
Johnson City, Thursday, 27 August
Climate normal for this date — 60-year average.
0.08Johnson City, Friday, 28 August
Climate normal for this date — 60-year average.
0.06Johnson City, Saturday, 29 August
Climate normal for this date — 60-year average.
0.06Johnson City, Sunday, 30 August
Climate normal for this date — 60-year average.
0.1Johnson City, Monday, 31 August
Climate normal for this date — 60-year average.
0.15Johnson City, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.08Johnson City, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.1Johnson City, Thursday, 3 September
Climate normal for this date — 60-year average.
0.15Johnson City, Friday, 4 September
Climate normal for this date — 60-year average.
0.17Johnson City, Saturday, 5 September
Climate normal for this date — 60-year average.
0.12Johnson City, Sunday, 6 September
Climate normal for this date — 60-year average.
0.11Johnson City, 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 Johnson City, 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 Johnson City, 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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