Weather in Northumberland, PA
Northumberland, Sunday, 15 November, 02:06
Overcast. Feels like 38°. High 45°, low 40°.
Monthly outlook for Northumberland, PA: average high 48.6°, average low 32.8°. That is 1.1° above the climate normal for November. Precipitation is expected on 2 days (about 1.0 inches), against a normal of 5 days and 2.0 inches. The warmest day looks like 28 November (60.3°), the coolest 24 November (20.4°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 15 November – 24 November | 50.3° | 47.4° | +1.6° |
| 25 November – 4 December | 45.6° | 44.4° | +0.7° |
| 5 December – 14 December | at normal | 40° | — |
November records over 66 years
Climate normals and records are computed from the nearest reference point — Lewisburg (7 mi).
0Northumberland, Monday, 16 November
Overcast. High 51°, low 36°.
0
Northumberland, Tuesday, 17 November
Clear. High 56°, low 32°.
0
Northumberland, Wednesday, 18 November
Mostly clear. High 55°, low 33°.
0Northumberland, Thursday, 19 November
Overcast. High 55°, low 33°.
0Northumberland, Friday, 20 November
Mostly clear. High 60°, low 39°.
0Northumberland, Saturday, 21 November
Clear. High 56°, low 38°.
0.01
Northumberland, Sunday, 22 November
Light rain. High 51°, low 39°.
0.09
Northumberland, Monday, 23 November
Snow. High 45°, low 25°.
0Northumberland, Tuesday, 24 November
Mostly clear. High 31°, low 20°.
0Northumberland, Wednesday, 25 November
Clear. High 38°, low 20°.
0Northumberland, Thursday, 26 November
Overcast. High 40°, low 21°.
0Northumberland, Friday, 27 November
Light rain. High 49°, low 25°.
0.94Northumberland, Saturday, 28 November
Heavy rain. High 60°, low 43°.
0Northumberland, Sunday, 29 November
Light rain. High 45°, low 40°.
0Northumberland, Monday, 30 November
Overcast. High 41°, low 39°.
0.15
Northumberland, Tuesday, 1 December
Climate normal for this date — 60-year average.
0.1Northumberland, Wednesday, 2 December
Climate normal for this date — 60-year average.
0.12Northumberland, Thursday, 3 December
Climate normal for this date — 60-year average.
0.1
Northumberland, Friday, 4 December
Climate normal for this date — 60-year average.
0.12Northumberland, Saturday, 5 December
Climate normal for this date — 60-year average.
0.13Northumberland, Sunday, 6 December
Climate normal for this date — 60-year average.
0.1Northumberland, Monday, 7 December
Climate normal for this date — 60-year average.
0.09Northumberland, Tuesday, 8 December
Climate normal for this date — 60-year average.
0.15Northumberland, Wednesday, 9 December
Climate normal for this date — 60-year average.
0.15Northumberland, Thursday, 10 December
Climate normal for this date — 60-year average.
0.15Northumberland, Friday, 11 December
Climate normal for this date — 60-year average.
0.09Northumberland, Saturday, 12 December
Climate normal for this date — 60-year average.
0.17Northumberland, Sunday, 13 December
Climate normal for this date — 60-year average.
0.15Northumberland, Monday, 14 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 Northumberland, 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 Northumberland, 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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