Weather in Fort Jefferson, OH
Fort Jefferson, Sunday, 9 August, 07:56
Overcast. Feels like 66°. High 88°, low 65°.
Monthly outlook for Fort Jefferson, OH: average high 81.9°, average low 65.5°. That is 0.9° above the climate normal for August. Precipitation is expected on 6 days (about 3.7 inches), against a normal of 6 days and 1.7 inches. The warmest day looks like 10 August (90.3°), the coolest 15 August (56.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 79.2° | 80.4° | -0.7° |
| 19 August – 28 August | 86.4° | 80.4° | +3.3° |
| 29 August – 7 September | at normal | 79° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — Greenville (6 mi).
0.49
Fort Jefferson, Monday, 10 August
Rain. High 90°, low 70°.
1.05Fort Jefferson, Tuesday, 11 August
Heavy rain. High 86°, low 68°.
1.8Fort Jefferson, Wednesday, 12 August
Heavy rain. High 83°, low 65°.
0.01Fort Jefferson, Thursday, 13 August
Light rain. High 75°, low 61°.
0.13Fort Jefferson, Friday, 14 August
Light rain. High 71°, low 59°.
0Fort Jefferson, Saturday, 15 August
Overcast. High 71°, low 56°.
0.01Fort Jefferson, Sunday, 16 August
Light rain. High 73°, low 58°.
0.04Fort Jefferson, Monday, 17 August
Light rain. High 76°, low 61°.
0
Fort Jefferson, Tuesday, 18 August
Clear. High 79°, low 61°.
0Fort Jefferson, Wednesday, 19 August
Overcast. High 80°, low 62°.
0.01Fort Jefferson, Thursday, 20 August
Light rain. High 88°, low 68°.
0Fort Jefferson, Friday, 21 August
Clear. High 88°, low 73°.
0
Fort Jefferson, Saturday, 22 August
Mostly clear. High 87°, low 69°.
0
Fort Jefferson, Sunday, 23 August
Partly cloudy. High 90°, low 75°.
0.14Fort Jefferson, Monday, 24 August
Rain. High 85°, low 74°.
0.06Fort Jefferson, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.08Fort Jefferson, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.07Fort Jefferson, Thursday, 27 August
Climate normal for this date — 60-year average.
0.17
Fort Jefferson, Friday, 28 August
Climate normal for this date — 60-year average.
0.12Fort Jefferson, Saturday, 29 August
Climate normal for this date — 60-year average.
0.11Fort Jefferson, Sunday, 30 August
Climate normal for this date — 60-year average.
0.07Fort Jefferson, Monday, 31 August
Climate normal for this date — 60-year average.
0.08Fort Jefferson, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.09Fort Jefferson, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.11Fort Jefferson, Thursday, 3 September
Climate normal for this date — 60-year average.
0.06Fort Jefferson, Friday, 4 September
Climate normal for this date — 60-year average.
0.07Fort Jefferson, Saturday, 5 September
Climate normal for this date — 60-year average.
0.03Fort Jefferson, Sunday, 6 September
Climate normal for this date — 60-year average.
0.07Fort Jefferson, 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 Fort Jefferson, OH 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 Fort Jefferson, OH 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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