Monthly outlook for Crystal Brook, NY: average high 60.3°, average low 51.9°. That is 0.6° above the climate normal for October. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 4 days and 2.1 inches. The warmest day looks like 16 October (77.1°), the coolest 18 October (46.6°).
60.3°/51.9°
Average high / low
+0.6°
Above normal
6 / 4
Wet days / normal
1.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
61.3°
60.2°
+0.6°
26 October – 4 November
58.5°
57.3°
+0.7°
5 November – 14 November
at normal
53.4°
—
October records over 66 years
89.4°2 October 2019All-time high
32.7°27 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Stony Brook University (5 mi).
Sat, 1765° / 49°0.08
65 °
Crystal Brook, Saturday, 17 October
Light rain. High 65°, low 49°.
Pressure30.12 inHg
Wind18.6 mph N
Humidity59%
Visibility6.2 mi
Dew point38°
Sun, 1853° / 47°0
53 °
Crystal Brook, Sunday, 18 October
Clear. High 53°, low 47°.
Pressure30.62 inHg
Wind7.9 mph NE
Humidity51%
Visibility6.2 mi
Dew point31°
Mon, 1959° / 49°0
59 °
Crystal Brook, Monday, 19 October
Overcast. High 59°, low 49°.
Pressure30.50 inHg
Wind12.8 mph NE
Humidity59%
Visibility6.2 mi
Dew point41°
Tue, 2063° / 53°0.11
63 °
Crystal Brook, Tuesday, 20 October
Light rain. High 63°, low 53°.
Pressure30.24 inHg
Wind21 mph NE
Humidity63%
Visibility—
Dew point43°
Wed, 2159° / 51°0.06
59 °
Crystal Brook, Wednesday, 21 October
Light rain. High 59°, low 51°.
Pressure30.21 inHg
Wind26.6 mph NE
Humidity72%
Visibility—
Dew point48°
Thu, 2259° / 53°0
59 °
Crystal Brook, Thursday, 22 October
Overcast. High 59°, low 53°.
Pressure30.42 inHg
Wind20.4 mph NE
Humidity68%
Visibility—
Dew point44°
Fri, 2360° / 50°0
60 °
Crystal Brook, Friday, 23 October
Clear. High 60°, low 50°.
Pressure30.33 inHg
Wind14.8 mph NE
Humidity69%
Visibility—
Dew point42°
Sat, 2461° / 54°0
61 °
Crystal Brook, Saturday, 24 October
Clear. High 61°, low 54°.
Pressure30.42 inHg
Wind18 mph E
Humidity68%
Visibility—
Dew point46°
Sun, 2556° / 51°0
56 °
Crystal Brook, Sunday, 25 October
Light rain. High 56°, low 51°.
Pressure30.53 inHg
Wind19.3 mph NE
Humidity72%
Visibility—
Dew point45°
Mon, 2660° / 51°0
60 °
Crystal Brook, Monday, 26 October
Partly cloudy. High 60°, low 51°.
Pressure30.33 inHg
Wind13.6 mph NE
Humidity73%
Visibility—
Dew point44°
Tue, 2763° / 53°0
63 °
Crystal Brook, Tuesday, 27 October
Mostly clear. High 63°, low 53°.
Pressure30.06 inHg
Wind11.6 mph N
Humidity56%
Visibility—
Dew point41°
Wed, 2859° / 54°0
59 °
Crystal Brook, Wednesday, 28 October
Partly cloudy. High 59°, low 54°.
Pressure30.06 inHg
Wind8.6 mph SE
Humidity58%
Visibility—
Dew point41°
Thu, 2958° / 55°0.04
58 °
Crystal Brook, Thursday, 29 October
Light rain. High 58°, low 55°.
Pressure30.09 inHg
Wind20 mph E
Humidity75%
Visibility—
Dew point49°
Fri, 3057° / 52°0.1
57 °
Crystal Brook, Friday, 30 October
Light rain. High 57°, low 52°.
Pressure29.94 inHg
Wind23.9 mph E
Humidity79%
Visibility—
Dew point47°
Sat, 3154° / 52°0
54 °
Crystal Brook, Saturday, 31 October
Overcast. High 54°, low 52°.
Pressure30.00 inHg
Wind11.6 mph N
Humidity69%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0158° / 49°0.14
58 °
Crystal Brook, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high58°
Average low49°
Average precipitation0.14 in
Chance of precipitation30%
Record high80° (2024)
Record low37° (1976)
Mon, 0257° / 48°0.08
57 °
Crystal Brook, Monday, 2 November
Climate normal for this date — 60-year average.
Average high57°
Average low48°
Average precipitation0.08 in
Chance of precipitation32%
Record high70° (2017)
Record low32° (1965)
Tue, 0357° / 47°0.12
57 °
Crystal Brook, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high57°
Average low47°
Average precipitation0.12 in
Chance of precipitation30%
Record high71° (2017)
Record low37° (1996)
Wed, 0456° / 46°0.05
56 °
Crystal Brook, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low46°
Average precipitation0.05 in
Chance of precipitation27%
Record high70° (2022)
Record low36° (2013)
Thu, 0556° / 46°0.15
56 °
Crystal Brook, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low46°
Average precipitation0.15 in
Chance of precipitation28%
Record high73° (2022)
Record low37° (1965)
Fri, 0655° / 46°0.11
55 °
Crystal Brook, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low46°
Average precipitation0.11 in
Chance of precipitation30%
Record high75° (2024)
Record low35° (1962)
Sat, 0755° / 45°0.1
55 °
Crystal Brook, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high55°
Average low45°
Average precipitation0.1 in
Chance of precipitation25%
Record high75° (2022)
Record low34° (2025)
Sun, 0854° / 44°0.17
54 °
Crystal Brook, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.17 in
Chance of precipitation30%
Record high72° (2020)
Record low32° (2019)
Mon, 0954° / 44°0.1
54 °
Crystal Brook, Monday, 9 November
Climate normal for this date — 60-year average.
Average high54°
Average low44°
Average precipitation0.1 in
Chance of precipitation25%
Record high72° (2020)
Record low28° (2019)
Tue, 1055° / 44°0.17
55 °
Crystal Brook, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high55°
Average low44°
Average precipitation0.17 in
Chance of precipitation42%
Record high69° (2020)
Record low28° (2017)
Wed, 1153° / 44°0.15
53 °
Crystal Brook, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high53°
Average low44°
Average precipitation0.15 in
Chance of precipitation37%
Record high69° (2024)
Record low26° (2017)
Thu, 1252° / 42°0.16
52 °
Crystal Brook, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high52°
Average low42°
Average precipitation0.16 in
Chance of precipitation38%
Record high69° (2022)
Record low30° (2019)
Fri, 1351° / 41°0.22
51 °
Crystal Brook, Friday, 13 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.22 in
Chance of precipitation40%
Record high66° (1964)
Record low24° (2019)
Sat, 1451° / 41°0.11
51 °
Crystal Brook, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.11 in
Chance of precipitation22%
Record high64° (1989)
Record low26° (2019)
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.