Weather in Lyon Valley, PA
Lyon Valley, Sunday, 25 October, 20:25
Clear. Feels like 46°. High 64°, low 33°.
Monthly outlook for Lyon Valley, PA: average high 58.9°, average low 42°. That is 1.4° above the climate normal for October. Precipitation is expected on 2 days (about 2.4 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 30 October (70.4°), the coolest 25 October (33°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 25 October – 3 November | 61.5° | 57.7° | +2.1° |
| 4 November – 13 November | 54.6° | 53.2° | +0.8° |
| 14 November – 23 November | at normal | 48.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Stiles (9 mi).
0
Lyon Valley, Monday, 26 October
Clear. High 68°, low 35°.
0Lyon Valley, Tuesday, 27 October
Clear. High 61°, low 41°.
0
Lyon Valley, Wednesday, 28 October
Partly cloudy. High 60°, low 40°.
0
Lyon Valley, Thursday, 29 October
Overcast. High 63°, low 46°.
0
Lyon Valley, Friday, 30 October
Mostly clear. High 70°, low 49°.
0Lyon Valley, Saturday, 31 October
Overcast. High 57°, low 44°.
0Lyon Valley, Sunday, 1 November
Overcast. High 57°, low 43°.
0Lyon Valley, Monday, 2 November
Overcast. High 60°, low 43°.
0Lyon Valley, Tuesday, 3 November
Overcast. High 53°, low 42°.
1.57
Lyon Valley, Wednesday, 4 November
Rain. High 46°, low 38°.
0.01Lyon Valley, Thursday, 5 November
Light rain. High 56°, low 44°.
0Lyon Valley, Friday, 6 November
Overcast. High 55°, low 41°.
0Lyon Valley, Saturday, 7 November
Overcast. High 59°, low 44°.
0Lyon Valley, Sunday, 8 November
Mostly clear. High 58°, low 43°.
0.78Lyon Valley, Monday, 9 November
Heavy rain. High 54°, low 46°.
0.18
Lyon Valley, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.13Lyon Valley, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.17Lyon 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.
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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