Weather in Chambersburg, IN
Chambersburg, Sunday, 18 October, 11:30
Clear. Feels like 57°. High 62°, low 36°.
Monthly outlook for Chambersburg, IN: average high 67.8°, average low 48.1°. That is 2.9° above the climate normal for October. Precipitation is expected on 3 days (about 1.0 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 30 October (78.3°), the coolest 18 October (35.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 18 October – 27 October | 69.3° | 63.2° | +3.3° |
| 28 October – 6 November | 65.3° | 60° | +3° |
| 7 November – 16 November | at normal | 54.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Paoli (5 mi).
0Chambersburg, Monday, 19 October
Clear. High 65°, low 41°.
0Chambersburg, Tuesday, 20 October
Clear. High 69°, low 43°.
0Chambersburg, Wednesday, 21 October
Clear. High 68°, low 44°.
0Chambersburg, Thursday, 22 October
Clear. High 67°, low 45°.
0
Chambersburg, Friday, 23 October
Mostly clear. High 66°, low 48°.
0
Chambersburg, Saturday, 24 October
Partly cloudy. High 74°, low 48°.
0
Chambersburg, Sunday, 25 October
Overcast. High 74°, low 56°.
0Chambersburg, Monday, 26 October
Overcast. High 72°, low 53°.
0Chambersburg, Tuesday, 27 October
Overcast. High 75°, low 55°.
0.23
Chambersburg, Wednesday, 28 October
Light rain. High 63°, low 56°.
0.3Chambersburg, Thursday, 29 October
Rain. High 68°, low 63°.
0.02Chambersburg, Friday, 30 October
Light rain. High 78°, low 60°.
0.45Chambersburg, Saturday, 31 October
Rain. High 67°, low 47°.
0Chambersburg, Sunday, 1 November
Clear. High 56°, low 40°.
0Chambersburg, Monday, 2 November
Clear. High 59°, low 37°.
0.06Chambersburg, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.09Chambersburg, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12Chambersburg, Thursday, 5 November
Climate normal for this date — 60-year average.
0.11
Chambersburg, Friday, 6 November
Climate normal for this date — 60-year average.
0.13Chambersburg, Saturday, 7 November
Climate normal for this date — 60-year average.
0.04Chambersburg, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11Chambersburg, Monday, 9 November
Climate normal for this date — 60-year average.
0.15Chambersburg, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.1Chambersburg, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.08Chambersburg, Thursday, 12 November
Climate normal for this date — 60-year average.
0.12Chambersburg, Friday, 13 November
Climate normal for this date — 60-year average.
0.09Chambersburg, Saturday, 14 November
Climate normal for this date — 60-year average.
0.2Chambersburg, Sunday, 15 November
Climate normal for this date — 60-year average.
0.1Chambersburg, Monday, 16 November
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 Chambersburg, IN 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 Chambersburg, IN 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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