Weather in Bethlehem, PA
Bethlehem, Saturday, 10 October, 03:12
Overcast. Feels like 48°. High 69°, low 45°.
Monthly outlook for Bethlehem, PA: average high 63.3°, average low 47.3°. That is 0.7° above the climate normal for October. Precipitation is expected on 5 days (about 4.3 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 13 October (76.3°), the coolest 19 October (31.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 10 October – 19 October | 64° | 63.1° | +0.6° |
| 20 October – 29 October | 62.2° | 59.6° | +1.4° |
| 30 October – 8 November | at normal | 56.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Fountain Hill (2 mi).
0.93
Bethlehem, Sunday, 11 October
Heavy rain. High 63°, low 47°.
1.15Bethlehem, Monday, 12 October
Heavy rain. High 71°, low 56°.
0
Bethlehem, Tuesday, 13 October
Mostly clear. High 76°, low 53°.
0.02Bethlehem, Wednesday, 14 October
Light rain. High 68°, low 58°.
0
Bethlehem, Thursday, 15 October
Partly cloudy. High 61°, low 50°.
0.57Bethlehem, Friday, 16 October
Rain. High 64°, low 48°.
0.56Bethlehem, Saturday, 17 October
Rain. High 65°, low 46°.
0Bethlehem, Sunday, 18 October
Overcast. High 50°, low 36°.
0Bethlehem, Monday, 19 October
Overcast. High 53°, low 32°.
0
Bethlehem, Tuesday, 20 October
Clear. High 56°, low 37°.
0Bethlehem, Wednesday, 21 October
Overcast. High 58°, low 44°.
0.02Bethlehem, Thursday, 22 October
Light rain. High 61°, low 43°.
1.09Bethlehem, Friday, 23 October
Rain. High 63°, low 57°.
0Bethlehem, Saturday, 24 October
Clear. High 68°, low 52°.
0Bethlehem, Sunday, 25 October
Overcast. High 66°, low 54°.
0.12
Bethlehem, Monday, 26 October
Climate normal for this date — 60-year average.
0.2Bethlehem, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.15Bethlehem, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.21Bethlehem, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11Bethlehem, Friday, 30 October
Climate normal for this date — 60-year average.
0.05Bethlehem, Saturday, 31 October
Climate normal for this date — 60-year average.
0.08Bethlehem, Sunday, 1 November
Climate normal for this date — 60-year average.
0.12Bethlehem, Monday, 2 November
Climate normal for this date — 60-year average.
0.08Bethlehem, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.07Bethlehem, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.11Bethlehem, Thursday, 5 November
Climate normal for this date — 60-year average.
0.08Bethlehem, Friday, 6 November
Climate normal for this date — 60-year average.
0.07Bethlehem, Saturday, 7 November
Climate normal for this date — 60-year average.
0.13Bethlehem, Sunday, 8 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 Bethlehem, 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 Bethlehem, 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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