Weather in Lyon Valley, PA
Lyon Valley, Monday, 26 October, 00:45
Clear. Feels like 40°. High 69°, low 36°.
Monthly outlook for Lyon Valley, PA: average high 55.3°, average low 39°. That is 0.5° below the climate normal for October. Precipitation is expected on 4 days (about 1.0 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 30 October (71.2°), the coolest 6 November (28.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 26 October – 4 November | 60.7° | 57.4° | +1.8° |
| 5 November – 14 November | 46.2° | 52.6° | -3.6° |
| 15 November – 24 November | at normal | 48.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Stiles (9 mi).
0
Lyon Valley, Tuesday, 27 October
Clear. High 63°, low 42°.
0
Lyon Valley, Wednesday, 28 October
Partly cloudy. High 61°, low 41°.
0
Lyon Valley, Thursday, 29 October
Overcast. High 64°, low 46°.
0Lyon Valley, Friday, 30 October
Clear. High 71°, low 50°.
0Lyon Valley, Saturday, 31 October
Overcast. High 62°, low 45°.
0Lyon Valley, Sunday, 1 November
Overcast. High 59°, low 42°.
0.59
Lyon Valley, Monday, 2 November
Rain. High 55°, low 48°.
0.08Lyon Valley, Tuesday, 3 November
Light rain. High 54°, low 45°.
0Lyon Valley, Wednesday, 4 November
Overcast. High 48°, low 39°.
0Lyon Valley, Thursday, 5 November
Overcast. High 45°, low 35°.
0Lyon Valley, Friday, 6 November
Clear. High 47°, low 29°.
0Lyon Valley, Saturday, 7 November
Clear. High 51°, low 31°.
0.23Lyon Valley, Sunday, 8 November
Rain. High 44°, low 34°.
0.08Lyon Valley, Monday, 9 November
Light rain. High 46°, low 32°.
0Lyon Valley, Tuesday, 10 November
Overcast. High 43°, low 29°.
0.13Lyon Valley, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.17
Lyon Valley, Thursday, 12 November
Climate normal for this date — 60-year average.
0.11Lyon Valley, Friday, 13 November
Climate normal for this date — 60-year average.
0.09Lyon Valley, Saturday, 14 November
Climate normal for this date — 60-year average.
0.11Lyon Valley, Sunday, 15 November
Climate normal for this date — 60-year average.
0.16Lyon Valley, Monday, 16 November
Climate normal for this date — 60-year average.
0.11Lyon Valley, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.1Lyon Valley, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.09Lyon Valley, Thursday, 19 November
Climate normal for this date — 60-year average.
0.13Lyon Valley, Friday, 20 November
Climate normal for this date — 60-year average.
0.12Lyon Valley, Saturday, 21 November
Climate normal for this date — 60-year average.
0.13Lyon Valley, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09Lyon Valley, Monday, 23 November
Climate normal for this date — 60-year average.
0.12Lyon Valley, Tuesday, 24 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 Lyon Valley, 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 Lyon Valley, 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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