Weather in Northumberland, PA
Northumberland, Thursday, 29 October, 00:53
Fog. Feels like 42°. High 69°, low 42°.
Monthly outlook for Northumberland, PA: average high 57.1°, average low 43.9°. That is 1.9° above the climate normal for October. Precipitation is expected on 8 days (about 1.6 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 29 October (69.4°), the coolest 13 November (34.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 29 October – 7 November | 62.5° | 55.3° | +4° |
| 8 November – 17 November | 48.1° | 50° | -1.1° |
| 18 November – 27 November | at normal | 46.7° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Lewisburg (7 mi).
0.12
Northumberland, Friday, 30 October
Rain. High 63°, low 46°.
0
Northumberland, Saturday, 31 October
Overcast. High 58°, low 42°.
0Northumberland, Sunday, 1 November
Overcast. High 60°, low 41°.
0
Northumberland, Monday, 2 November
Partly cloudy. High 65°, low 42°.
0.02Northumberland, Tuesday, 3 November
Light rain. High 65°, low 47°.
0.13Northumberland, Wednesday, 4 November
Light rain. High 58°, low 53°.
0.04Northumberland, Thursday, 5 November
Light rain. High 65°, low 60°.
0.98Northumberland, Friday, 6 November
Rain. High 67°, low 52°.
0.04Northumberland, Saturday, 7 November
Light rain. High 55°, low 41°.
0.08Northumberland, Sunday, 8 November
Light rain. High 44°, low 41°.
0.03Northumberland, Monday, 9 November
Light rain. High 45°, low 42°.
0.04Northumberland, Tuesday, 10 November
Light rain. High 56°, low 42°.
0.02Northumberland, Wednesday, 11 November
Light rain. High 49°, low 38°.
0.06Northumberland, Thursday, 12 November
Light rain. High 48°, low 36°.
0Northumberland, Friday, 13 November
Overcast. High 47°, low 35°.
0.08Northumberland, Saturday, 14 November
Climate normal for this date — 60-year average.
0.14
Northumberland, Sunday, 15 November
Climate normal for this date — 60-year average.
0.14Northumberland, Monday, 16 November
Climate normal for this date — 60-year average.
0.1Northumberland, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.09Northumberland, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.1Northumberland, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1Northumberland, Friday, 20 November
Climate normal for this date — 60-year average.
0.11Northumberland, Saturday, 21 November
Climate normal for this date — 60-year average.
0.11Northumberland, Sunday, 22 November
Climate normal for this date — 60-year average.
0.07Northumberland, Monday, 23 November
Climate normal for this date — 60-year average.
0.11Northumberland, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.12Northumberland, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.21Northumberland, Thursday, 26 November
Climate normal for this date — 60-year average.
0.09Northumberland, Friday, 27 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 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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