Weather in Port Perry, PA
Port Perry, Tuesday, 20 October, 09:05
Clear. Feels like 46°. High 69°, low 37°.
Monthly outlook for Port Perry, PA: average high 55.8°, average low 36.7°. That is 1.5° below the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 20 October (68.6°), the coolest 29 October (28.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 59.5° | 59° | +0.3° |
| 30 October – 8 November | 49.6° | 56.1° | -3.6° |
| 9 November – 18 November | at normal | 50.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Turtle Creek (2 mi).
0Port Perry, Wednesday, 21 October
Clear. High 66°, low 33°.
0Port Perry, Thursday, 22 October
Clear. High 63°, low 34°.
0Port Perry, Friday, 23 October
Clear. High 55°, low 39°.
0Port Perry, Saturday, 24 October
Clear. High 60°, low 37°.
0Port Perry, Sunday, 25 October
Clear. High 64°, low 38°.
0
Port Perry, Monday, 26 October
Overcast. High 66°, low 48°.
0.04
Port Perry, Tuesday, 27 October
Light rain. High 61°, low 44°.
0Port Perry, Wednesday, 28 October
Overcast. High 45°, low 34°.
0Port Perry, Thursday, 29 October
Clear. High 47°, low 29°.
0Port Perry, Friday, 30 October
Overcast. High 45°, low 34°.
0.02Port Perry, Saturday, 31 October
Light rain. High 44°, low 40°.
0Port Perry, Sunday, 1 November
Clear. High 52°, low 37°.
0Port Perry, Monday, 2 November
Overcast. High 49°, low 32°.
0
Port Perry, Tuesday, 3 November
Partly cloudy. High 55°, low 34°.
0Port Perry, Wednesday, 4 November
Overcast. High 53°, low 38°.
0.11
Port Perry, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Port Perry, Friday, 6 November
Climate normal for this date — 60-year average.
0.13Port Perry, Saturday, 7 November
Climate normal for this date — 60-year average.
0.11Port Perry, Sunday, 8 November
Climate normal for this date — 60-year average.
0.11Port Perry, Monday, 9 November
Climate normal for this date — 60-year average.
0.17Port Perry, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.16Port Perry, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.14Port Perry, Thursday, 12 November
Climate normal for this date — 60-year average.
0.06Port Perry, Friday, 13 November
Climate normal for this date — 60-year average.
0.11Port Perry, Saturday, 14 November
Climate normal for this date — 60-year average.
0.14Port Perry, Sunday, 15 November
Climate normal for this date — 60-year average.
0.14Port Perry, Monday, 16 November
Climate normal for this date — 60-year average.
0.12Port Perry, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Port Perry, Wednesday, 18 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 Port Perry, 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 Port Perry, 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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