Weather in Crystal Brook, NY
Crystal Brook, Tuesday, 20 October, 10:53
Clear. Feels like 57°. High 65°, low 47°.
Monthly outlook for Crystal Brook, NY: average high 57.6°, average low 48.1°. That is 0.4° below the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 5 days and 1.9 inches. The warmest day looks like 20 October (64.8°), the coolest 31 October (40.2°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 20 October – 29 October | 59.3° | 59.1° | +0.1° |
| 30 October – 8 November | 54.8° | 56° | -0.7° |
| 9 November – 18 November | at normal | 51.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Stony Brook University (5 mi).
0Crystal Brook, Wednesday, 21 October
Clear. High 60°, low 43°.
0Crystal Brook, Thursday, 22 October
Clear. High 62°, low 51°.
0Crystal Brook, Friday, 23 October
Clear. High 53°, low 46°.
0Crystal Brook, Saturday, 24 October
Clear. High 57°, low 46°.
0
Crystal Brook, Sunday, 25 October
Partly cloudy. High 61°, low 50°.
0Crystal Brook, Monday, 26 October
Clear. High 64°, low 55°.
0
Crystal Brook, Tuesday, 27 October
Overcast. High 64°, low 58°.
0.14
Crystal Brook, Wednesday, 28 October
Light rain. High 53°, low 45°.
0Crystal Brook, Thursday, 29 October
Clear. High 52°, low 44°.
0Crystal Brook, Friday, 30 October
Clear. High 59°, low 48°.
0Crystal Brook, Saturday, 31 October
Clear. High 51°, low 40°.
0Crystal Brook, Sunday, 1 November
Overcast. High 55°, low 49°.
0Crystal Brook, Monday, 2 November
Clear. High 56°, low 50°.
0Crystal Brook, Tuesday, 3 November
Clear. High 52°, low 46°.
0Crystal Brook, Wednesday, 4 November
Overcast. High 55°, low 50°.
0.15Crystal Brook, Thursday, 5 November
Climate normal for this date — 60-year average.
0.11Crystal Brook, Friday, 6 November
Climate normal for this date — 60-year average.
0.1Crystal Brook, Saturday, 7 November
Climate normal for this date — 60-year average.
0.17Crystal Brook, Sunday, 8 November
Climate normal for this date — 60-year average.
0.1Crystal Brook, Monday, 9 November
Climate normal for this date — 60-year average.
0.17
Crystal Brook, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.15Crystal Brook, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.16Crystal Brook, Thursday, 12 November
Climate normal for this date — 60-year average.
0.22Crystal Brook, Friday, 13 November
Climate normal for this date — 60-year average.
0.11Crystal Brook, Saturday, 14 November
Climate normal for this date — 60-year average.
0.12Crystal Brook, Sunday, 15 November
Climate normal for this date — 60-year average.
0.14Crystal Brook, Monday, 16 November
Climate normal for this date — 60-year average.
0.15Crystal Brook, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.08Crystal Brook, Wednesday, 18 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 Crystal Brook, 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 Crystal Brook, 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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