Weather in Gretna, PA
Gretna, Wednesday, 28 October, 09:40
Clear. Feels like 47°. High 71°, low 46°.
Monthly outlook for Gretna, PA: average high 58.5°, average low 43.8°. That is 2° above the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 6 days and 1.9 inches. The warmest day looks like 29 October (72.4°), the coolest 9 November (31.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 64° | 56.5° | +4.1° |
| 7 November – 16 November | 49.5° | 51.2° | -0.9° |
| 17 November – 26 November | at normal | 48.2° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — East Finley (14 mi).
0Gretna, Thursday, 29 October
Clear. High 72°, low 46°.
0.02
Gretna, Friday, 30 October
Light rain. High 62°, low 46°.
0
Gretna, Saturday, 31 October
Overcast. High 57°, low 42°.
0
Gretna, Sunday, 1 November
Partly cloudy. High 68°, low 51°.
0Gretna, Monday, 2 November
Clear. High 69°, low 47°.
0Gretna, Tuesday, 3 November
Overcast. High 62°, low 50°.
0Gretna, Wednesday, 4 November
Overcast. High 58°, low 53°.
0.15Gretna, Thursday, 5 November
Light rain. High 63°, low 56°.
0.2Gretna, Friday, 6 November
Light rain. High 57°, low 43°.
0Gretna, Saturday, 7 November
Overcast. High 48°, low 35°.
0Gretna, Sunday, 8 November
Clear. High 46°, low 31°.
0Gretna, Monday, 9 November
Clear. High 52°, low 31°.
0Gretna, Tuesday, 10 November
Overcast. High 55°, low 36°.
0.69Gretna, Wednesday, 11 November
Rain. High 48°, low 43°.
0.27Gretna, Thursday, 12 November
Light rain. High 49°, low 45°.
0.06Gretna, Friday, 13 November
Climate normal for this date — 60-year average.
0.1Gretna, Saturday, 14 November
Climate normal for this date — 60-year average.
0.15
Gretna, Sunday, 15 November
Climate normal for this date — 60-year average.
0.14Gretna, Monday, 16 November
Climate normal for this date — 60-year average.
0.13Gretna, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.07Gretna, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.14Gretna, Thursday, 19 November
Climate normal for this date — 60-year average.
0.1Gretna, Friday, 20 November
Climate normal for this date — 60-year average.
0.1Gretna, Saturday, 21 November
Climate normal for this date — 60-year average.
0.12Gretna, Sunday, 22 November
Climate normal for this date — 60-year average.
0.06Gretna, Monday, 23 November
Climate normal for this date — 60-year average.
0.11Gretna, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.11Gretna, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.17Gretna, Thursday, 26 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 Gretna, 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 Gretna, 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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