Weather in Derby, NY
Derby, Friday, 9 October, 19:02
Mostly clear. Feels like 58°. High 66°, low 44°.
Monthly outlook for Derby, NY: average high 59.8°, average low 46.2°. That is 2° above the climate normal for October. Precipitation is expected on 5 days (about 1.7 inches), against a normal of 7 days and 2.3 inches. The warmest day looks like 10 October (70.4°), the coolest 19 October (31.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 October – 18 October | 62.3° | 57.4° | +2.7° |
| 19 October – 28 October | 55.5° | 53.3° | +1.2° |
| 29 October – 7 November | at normal | 50.3° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — North Collins (10 mi).
0
Derby, Saturday, 10 October
Overcast. High 70°, low 43°.
0.17
Derby, Sunday, 11 October
Light rain. High 65°, low 50°.
0.01Derby, Monday, 12 October
Light rain. High 67°, low 60°.
0.66Derby, Tuesday, 13 October
Heavy rain. High 67°, low 60°.
0.04Derby, Wednesday, 14 October
Light rain. High 60°, low 57°.
0Derby, Thursday, 15 October
Light rain. High 64°, low 52°.
0.53Derby, Friday, 16 October
Rain. High 68°, low 54°.
0.26Derby, Saturday, 17 October
Light rain. High 52°, low 43°.
0.02
Derby, Sunday, 18 October
Snow. High 44°, low 34°.
0
Derby, Monday, 19 October
Mostly clear. High 48°, low 32°.
0Derby, Tuesday, 20 October
Overcast. High 53°, low 40°.
0
Derby, Wednesday, 21 October
Clear. High 56°, low 39°.
0Derby, Thursday, 22 October
Mostly clear. High 61°, low 43°.
0Derby, Friday, 23 October
Clear. High 55°, low 46°.
0Derby, Saturday, 24 October
Clear. High 61°, low 42°.
0.16
Derby, Sunday, 25 October
Climate normal for this date — 60-year average.
0.12Derby, Monday, 26 October
Climate normal for this date — 60-year average.
0.15Derby, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.14Derby, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.14Derby, Thursday, 29 October
Climate normal for this date — 60-year average.
0.11
Derby, Friday, 30 October
Climate normal for this date — 60-year average.
0.18Derby, Saturday, 31 October
Climate normal for this date — 60-year average.
0.14Derby, Sunday, 1 November
Climate normal for this date — 60-year average.
0.19Derby, Monday, 2 November
Climate normal for this date — 60-year average.
0.13Derby, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.14Derby, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.14Derby, Thursday, 5 November
Climate normal for this date — 60-year average.
0.14Derby, Friday, 6 November
Climate normal for this date — 60-year average.
0.11Derby, Saturday, 7 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 Derby, 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 Derby, 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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