Weather in Great Valley, NY
Great Valley, Tuesday, 27 October, 08:33
Mostly clear. Feels like 34°. High 58°, low 38°.
Monthly outlook for Great Valley, NY: average high 54.2°, average low 40.1°. That is 3.1° above the climate normal for October. Precipitation is expected on 6 days (about 1.7 inches), against a normal of 7 days and 2.0 inches. The warmest day looks like 29 October (66.7°), the coolest 7 November (28.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 27 October – 5 November | 56.6° | 50.1° | +3.6° |
| 6 November – 15 November | 50.2° | 44.7° | +3.1° |
| 16 November – 25 November | at normal | 40.9° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Franklinville (10 mi).
0
Great Valley, Wednesday, 28 October
Clear. High 65°, low 40°.
0.01
Great Valley, Thursday, 29 October
Light rain. High 67°, low 46°.
0.14Great Valley, Friday, 30 October
Light rain. High 55°, low 43°.
0
Great Valley, Saturday, 31 October
Overcast. High 56°, low 40°.
0.28Great Valley, Sunday, 1 November
Rain. High 64°, low 46°.
0.48Great Valley, Monday, 2 November
Rain. High 55°, low 51°.
0.01Great Valley, Tuesday, 3 November
Light rain. High 49°, low 38°.
0Great Valley, Wednesday, 4 November
Overcast. High 51°, low 39°.
0.42Great Valley, Thursday, 5 November
Rain. High 48°, low 45°.
0.08
Great Valley, Friday, 6 November
Snow. High 48°, low 35°.
0Great Valley, Saturday, 7 November
Light snow. High 41°, low 28°.
0Great Valley, Sunday, 8 November
Overcast. High 50°, low 31°.
0Great Valley, Monday, 9 November
Overcast. High 52°, low 34°.
0Great Valley, Tuesday, 10 November
Overcast. High 56°, low 41°.
0.23Great Valley, Wednesday, 11 November
Rain. High 54°, low 48°.
0.13Great Valley, Thursday, 12 November
Climate normal for this date — 60-year average.
0.09
Great Valley, Friday, 13 November
Climate normal for this date — 60-year average.
0.14Great Valley, Saturday, 14 November
Climate normal for this date — 60-year average.
0.19Great Valley, Sunday, 15 November
Climate normal for this date — 60-year average.
0.15Great Valley, Monday, 16 November
Climate normal for this date — 60-year average.
0.15Great Valley, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Great Valley, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.11Great Valley, Thursday, 19 November
Climate normal for this date — 60-year average.
0.13Great Valley, Friday, 20 November
Climate normal for this date — 60-year average.
0.11Great Valley, Saturday, 21 November
Climate normal for this date — 60-year average.
0.14Great Valley, Sunday, 22 November
Climate normal for this date — 60-year average.
0.07Great Valley, Monday, 23 November
Climate normal for this date — 60-year average.
0.11Great Valley, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.1Great Valley, Wednesday, 25 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 Great Valley, NY 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 Great Valley, NY 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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