Weather in Upper Darby, PA
Upper Darby, Friday, 16 October, 15:41
Clear. Feels like 75°. High 74°, low 59°.
Monthly outlook for Upper Darby, PA: average high 63.5°, average low 49.2°. That is 0.9° above the climate normal for October. Precipitation is expected on 2 days (about 1.1 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 16 October (74.2°), the coolest 18 October (38.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 16 October – 25 October | 61.3° | 62.9° | -0.9° |
| 26 October – 4 November | 67° | 60° | +3.9° |
| 5 November – 14 November | at normal | 55.3° | — |
October records over 66 years
0.01
Upper Darby, Saturday, 17 October
Light rain. High 61°, low 41°.
0Upper Darby, Sunday, 18 October
Clear. High 56°, low 38°.
0
Upper Darby, Monday, 19 October
Overcast. High 58°, low 43°.
0Upper Darby, Tuesday, 20 October
Clear. High 67°, low 49°.
0Upper Darby, Wednesday, 21 October
Clear. High 61°, low 51°.
0Upper Darby, Thursday, 22 October
Overcast. High 55°, low 48°.
0Upper Darby, Friday, 23 October
Clear. High 65°, low 46°.
0Upper Darby, Saturday, 24 October
Clear. High 59°, low 48°.
0Upper Darby, Sunday, 25 October
Overcast. High 56°, low 47°.
0Upper Darby, Monday, 26 October
Clear. High 65°, low 48°.
0
Upper Darby, Tuesday, 27 October
Mostly clear. High 65°, low 50°.
0Upper Darby, Wednesday, 28 October
Overcast. High 65°, low 50°.
0Upper Darby, Thursday, 29 October
Overcast. High 70°, low 56°.
0Upper Darby, Friday, 30 October
Mostly clear. High 69°, low 56°.
0.94Upper Darby, Saturday, 31 October
Heavy rain. High 69°, low 56°.
0.08
Upper Darby, Sunday, 1 November
Climate normal for this date — 60-year average.
0.09Upper Darby, Monday, 2 November
Climate normal for this date — 60-year average.
0.08Upper Darby, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.08Upper Darby, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.12Upper Darby, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Upper Darby, Friday, 6 November
Climate normal for this date — 60-year average.
0.09Upper Darby, Saturday, 7 November
Climate normal for this date — 60-year average.
0.11Upper Darby, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Upper Darby, Monday, 9 November
Climate normal for this date — 60-year average.
0.16
Upper Darby, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.13Upper Darby, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.2Upper Darby, Thursday, 12 November
Climate normal for this date — 60-year average.
0.15Upper Darby, Friday, 13 November
Climate normal for this date — 60-year average.
0.07Upper Darby, Saturday, 14 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 Darby, 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 Darby, 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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