Weather in Mount Joy, PA
Mount Joy, Saturday, 10 October, 02:32
Overcast. Feels like 49°. High 70°, low 46°.
Monthly outlook for Mount Joy, PA: average high 64.2°, average low 48.2°. That is 0.5° above the climate normal for October. Precipitation is expected on 5 days (about 3.4 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 13 October (77.7°), the coolest 19 October (31.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 65.5° | 64.2° | +0.7° |
| 20 October – 29 October | 62° | 60.7° | +0.7° |
| 30 October – 8 November | at normal | 57.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Lancaster (12 mi).
0.97
Mount Joy, Sunday, 11 October
Heavy rain. High 66°, low 51°.
0.24Mount Joy, Monday, 12 October
Rain. High 71°, low 59°.
0
Mount Joy, Tuesday, 13 October
Partly cloudy. High 78°, low 56°.
0.01Mount Joy, Wednesday, 14 October
Light rain. High 73°, low 62°.
0
Mount Joy, Thursday, 15 October
Mostly clear. High 62°, low 52°.
0.8Mount Joy, Friday, 16 October
Rain. High 68°, low 49°.
0.32Mount Joy, Saturday, 17 October
Light rain. High 65°, low 43°.
0Mount Joy, Sunday, 18 October
Overcast. High 49°, low 35°.
0Mount Joy, Monday, 19 October
Partly cloudy. High 53°, low 32°.
0
Mount Joy, Tuesday, 20 October
Clear. High 56°, low 37°.
0Mount Joy, Wednesday, 21 October
Partly cloudy. High 59°, low 42°.
0Mount Joy, Thursday, 22 October
Overcast. High 63°, low 46°.
1.09Mount Joy, Friday, 23 October
Heavy rain. High 64°, low 58°.
0Mount Joy, Saturday, 24 October
Partly cloudy. High 67°, low 51°.
0Mount Joy, Sunday, 25 October
Overcast. High 64°, low 53°.
0.11
Mount Joy, Monday, 26 October
Climate normal for this date — 60-year average.
0.19Mount Joy, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.13Mount Joy, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.23Mount Joy, Thursday, 29 October
Climate normal for this date — 60-year average.
0.1Mount Joy, Friday, 30 October
Climate normal for this date — 60-year average.
0.05Mount Joy, Saturday, 31 October
Climate normal for this date — 60-year average.
0.07Mount Joy, Sunday, 1 November
Climate normal for this date — 60-year average.
0.11Mount Joy, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Mount Joy, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.07Mount Joy, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.1Mount Joy, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Mount Joy, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Mount Joy, Saturday, 7 November
Climate normal for this date — 60-year average.
0.15Mount Joy, Sunday, 8 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 Mount Joy, PA 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 Mount Joy, PA 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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