Weather in Londonderry, PA
Londonderry, Saturday, 7 November, 16:03
Overcast. Feels like 51°. High 55°, low 48°.
Monthly outlook for Londonderry, PA: average high 50.9°, average low 39.8°. That is 0.7° below the climate normal for November. Precipitation is expected on 4 days (about 2.2 inches), against a normal of 5 days and 1.8 inches. The warmest day looks like 10 November (60.7°), the coolest 18 November (30.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 7 November – 16 November | 50.5° | 53.4° | -1.6° |
| 17 November – 26 November | 51.6° | 49.9° | +0.9° |
| 27 November – 6 December | at normal | 46.9° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Lincoln University (5 mi).
0
Londonderry, Sunday, 8 November
Mostly clear. High 56°, low 45°.
0
Londonderry, Monday, 9 November
Partly cloudy. High 55°, low 44°.
0Londonderry, Tuesday, 10 November
Overcast. High 61°, low 42°.
0Londonderry, Wednesday, 11 November
Overcast. High 58°, low 43°.
0.31
Londonderry, Thursday, 12 November
Rain. High 57°, low 46°.
1.02Londonderry, Friday, 13 November
Rain. High 45°, low 36°.
0.84
Londonderry, Saturday, 14 November
Snow. High 36°, low 33°.
0
Londonderry, Sunday, 15 November
Clear. High 38°, low 33°.
0Londonderry, Monday, 16 November
Clear. High 44°, low 35°.
0Londonderry, Tuesday, 17 November
Overcast. High 48°, low 32°.
0Londonderry, Wednesday, 18 November
Mostly clear. High 47°, low 31°.
0Londonderry, Thursday, 19 November
Overcast. High 50°, low 38°.
0.06Londonderry, Friday, 20 November
Light rain. High 59°, low 47°.
0Londonderry, Saturday, 21 November
Overcast. High 51°, low 46°.
0Londonderry, Sunday, 22 November
Clear. High 54°, low 39°.
0.07Londonderry, Monday, 23 November
Climate normal for this date — 60-year average.
0.13Londonderry, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.12
Londonderry, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.15Londonderry, Thursday, 26 November
Climate normal for this date — 60-year average.
0.1Londonderry, Friday, 27 November
Climate normal for this date — 60-year average.
0.17Londonderry, Saturday, 28 November
Climate normal for this date — 60-year average.
0.15Londonderry, Sunday, 29 November
Climate normal for this date — 60-year average.
0.11Londonderry, Monday, 30 November
Climate normal for this date — 60-year average.
0.12Londonderry, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.12Londonderry, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.11Londonderry, Thursday, 3 December
Climate normal for this date — 60-year average.
0.1Londonderry, Friday, 4 December
Climate normal for this date — 60-year average.
0.15Londonderry, Saturday, 5 December
Climate normal for this date — 60-year average.
0.11Londonderry, Sunday, 6 December
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 Londonderry, 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 Londonderry, 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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