Weather in Gretna, NY
Gretna, Wednesday, 21 October, 00:25
Clear. Feels like 44°. High 62°, low 33°.
Monthly outlook for Gretna, NY: average high 54.6°, average low 34.7°. That is 1.5° below the climate normal for October. Precipitation is expected on 2 days (about 0.8 inches), against a normal of 4 days and 1.9 inches. The warmest day looks like 27 October (67.2°), the coolest 5 November (27.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 21 October – 30 October | 56.3° | 58° | -0.9° |
| 31 October – 9 November | 51.9° | 54.8° | -1.6° |
| 10 November – 19 November | at normal | 49.5° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Arlington (6 mi).
0
Gretna, Thursday, 22 October
Clear. High 65°, low 32°.
0
Gretna, Friday, 23 October
Mostly clear. High 52°, low 40°.
0Gretna, Saturday, 24 October
Clear. High 55°, low 36°.
0
Gretna, Sunday, 25 October
Partly cloudy. High 58°, low 37°.
0Gretna, Monday, 26 October
Mostly clear. High 62°, low 34°.
0
Gretna, Tuesday, 27 October
Overcast. High 67°, low 46°.
0Gretna, Wednesday, 28 October
Clear. High 47°, low 33°.
0.17
Gretna, Thursday, 29 October
Light rain. High 40°, low 31°.
0Gretna, Friday, 30 October
Overcast. High 54°, low 34°.
0Gretna, Saturday, 31 October
Clear. High 50°, low 29°.
0Gretna, Sunday, 1 November
Mostly clear. High 59°, low 33°.
0.63Gretna, Monday, 2 November
Rain. High 61°, low 50°.
0Gretna, Tuesday, 3 November
Mostly clear. High 49°, low 32°.
0Gretna, Wednesday, 4 November
Clear. High 47°, low 28°.
0Gretna, Thursday, 5 November
Clear. High 46°, low 27°.
0.09Gretna, Friday, 6 November
Climate normal for this date — 60-year average.
0.08Gretna, Saturday, 7 November
Climate normal for this date — 60-year average.
0.17Gretna, Sunday, 8 November
Climate normal for this date — 60-year average.
0.09Gretna, Monday, 9 November
Climate normal for this date — 60-year average.
0.13
Gretna, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.14Gretna, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.13Gretna, Thursday, 12 November
Climate normal for this date — 60-year average.
0.16Gretna, Friday, 13 November
Climate normal for this date — 60-year average.
0.13Gretna, Saturday, 14 November
Climate normal for this date — 60-year average.
0.11Gretna, Sunday, 15 November
Climate normal for this date — 60-year average.
0.12Gretna, Monday, 16 November
Climate normal for this date — 60-year average.
0.1Gretna, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.09Gretna, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.07Gretna, Thursday, 19 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, NY 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, NY 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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