Weather in Upper Uwchlan, PA
Upper Uwchlan, Sunday, 11 October, 02:13
Overcast. Feels like 57°. High 63°, low 53°.
Monthly outlook for Upper Uwchlan, PA: average high 60.8°, average low 42.6°. That is 1.2° below the climate normal for October. Precipitation is expected on 4 days (about 2.0 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 14 October (77.8°), the coolest 19 October (29°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 11 October – 20 October | 63.4° | 63.9° | -0.3° |
| 21 October – 30 October | 56.6° | 60.5° | -2.2° |
| 31 October – 9 November | at normal | 57.6° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Coatesville (9 mi).
0.21
Upper Uwchlan, Monday, 12 October
Rain. High 72°, low 51°.
0
Upper Uwchlan, Tuesday, 13 October
Clear. High 75°, low 55°.
0.08Upper Uwchlan, Wednesday, 14 October
Light rain. High 78°, low 64°.
0Upper Uwchlan, Thursday, 15 October
Overcast. High 62°, low 48°.
0Upper Uwchlan, Friday, 16 October
Light rain. High 68°, low 45°.
0.05Upper Uwchlan, Saturday, 17 October
Light rain. High 66°, low 42°.
0Upper Uwchlan, Sunday, 18 October
Clear. High 45°, low 33°.
0Upper Uwchlan, Monday, 19 October
Clear. High 49°, low 29°.
0Upper Uwchlan, Tuesday, 20 October
Clear. High 55°, low 34°.
0Upper Uwchlan, Wednesday, 21 October
Clear. High 58°, low 38°.
0Upper Uwchlan, Thursday, 22 October
Overcast. High 61°, low 41°.
0Upper Uwchlan, Friday, 23 October
Clear. High 61°, low 41°.
0Upper Uwchlan, Saturday, 24 October
Clear. High 49°, low 36°.
0
Upper Uwchlan, Sunday, 25 October
Mostly clear. High 52°, low 33°.
0
Upper Uwchlan, Monday, 26 October
Partly cloudy. High 58°, low 40°.
0.21Upper Uwchlan, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.13Upper Uwchlan, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.25Upper Uwchlan, Thursday, 29 October
Climate normal for this date — 60-year average.
0.1Upper Uwchlan, Friday, 30 October
Climate normal for this date — 60-year average.
0.05Upper Uwchlan, Saturday, 31 October
Climate normal for this date — 60-year average.
0.09Upper Uwchlan, Sunday, 1 November
Climate normal for this date — 60-year average.
0.1Upper Uwchlan, Monday, 2 November
Climate normal for this date — 60-year average.
0.07Upper Uwchlan, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.07Upper Uwchlan, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12Upper Uwchlan, Thursday, 5 November
Climate normal for this date — 60-year average.
0.07Upper Uwchlan, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Upper Uwchlan, Saturday, 7 November
Climate normal for this date — 60-year average.
0.13Upper Uwchlan, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1Upper Uwchlan, Monday, 9 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 Upper Uwchlan, 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 Upper Uwchlan, 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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