Monthly outlook for Crystal Brook, NY: average high 59.4°, average low 50.2°. That is 0.1° below the climate normal for October. Precipitation is expected on 2 days (about 0.5 inches), against a normal of 5 days and 2.1 inches. The warmest day looks like 16 October (73.2°), the coolest 25 October (44.2°).
59.4°/50.2°
Average high / low
−0.1°
Below normal
2 / 5
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
60.7°
60.6°
+0.1°
25 October – 3 November
57.2°
57.6°
-0.2°
4 November – 13 November
at normal
54°
—
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).
Fri, 1673° / 58°0.23
73 °
Crystal Brook, Friday, 16 October
Rain. High 73°, low 58°.
Pressure29.77 inHg
Wind17 mph S
Humidity90%
Visibility6.2 mi
Dew point65°
Sat, 1767° / 48°0.02
67 °
Crystal Brook, Saturday, 17 October
Light rain. High 67°, low 48°.
Pressure30.12 inHg
Wind21.7 mph NW
Humidity54%
Visibility6.2 mi
Dew point36°
Sun, 1854° / 47°0
54 °
Crystal Brook, Sunday, 18 October
Clear. High 54°, low 47°.
Pressure30.59 inHg
Wind1.1 mph W
Humidity52%
Visibility6.2 mi
Dew point31°
Mon, 1960° / 53°0
60 °
Crystal Brook, Monday, 19 October
Clear. High 60°, low 53°.
Pressure30.56 inHg
Wind8.5 mph SW
Humidity62%
Visibility6.2 mi
Dew point45°
Tue, 2062° / 54°0
62 °
Crystal Brook, Tuesday, 20 October
Clear. High 62°, low 54°.
Pressure30.36 inHg
Wind7.7 mph N
Humidity77%
Visibility—
Dew point49°
Wed, 2162° / 56°0
62 °
Crystal Brook, Wednesday, 21 October
Mostly clear. High 62°, low 56°.
Pressure30.33 inHg
Wind11.7 mph N
Humidity64%
Visibility—
Dew point46°
Thu, 2257° / 54°0
57 °
Crystal Brook, Thursday, 22 October
Light rain. High 57°, low 54°.
Pressure30.39 inHg
Wind11.8 mph NE
Humidity74%
Visibility—
Dew point47°
Fri, 2357° / 46°0.02
57 °
Crystal Brook, Friday, 23 October
Light rain. High 57°, low 46°.
Pressure30.30 inHg
Wind25.9 mph NE
Humidity61%
Visibility—
Dew point42°
Sat, 2451° / 44°0
51 °
Crystal Brook, Saturday, 24 October
Clear. High 51°, low 44°.
Pressure30.62 inHg
Wind21 mph NE
Humidity65%
Visibility—
Dew point35°
Sun, 2554° / 44°0
54 °
Crystal Brook, Sunday, 25 October
Partly cloudy. High 54°, low 44°.
Pressure30.50 inHg
Wind21.1 mph NE
Humidity72%
Visibility—
Dew point38°
Mon, 2660° / 47°0
60 °
Crystal Brook, Monday, 26 October
Clear. High 60°, low 47°.
Pressure30.33 inHg
Wind15.8 mph N
Humidity45%
Visibility—
Dew point32°
Tue, 2758° / 48°0
58 °
Crystal Brook, Tuesday, 27 October
Partly cloudy. High 58°, low 48°.
Pressure30.39 inHg
Wind16.4 mph SW
Humidity59%
Visibility—
Dew point36°
Wed, 2861° / 50°0
61 °
Crystal Brook, Wednesday, 28 October
Overcast. High 61°, low 50°.
Pressure30.06 inHg
Wind21.1 mph W
Humidity69%
Visibility—
Dew point51°
Thu, 2951° / 46°0.02
51 °
Crystal Brook, Thursday, 29 October
Light rain. High 51°, low 46°.
Pressure30.36 inHg
Wind15.5 mph NE
Humidity51%
Visibility—
Dew point31°
Fri, 3059° / 52°0.23
59 °
Crystal Brook, Friday, 30 October
Light rain. High 59°, low 52°.
Pressure30.18 inHg
Wind10.6 mph SW
Humidity82%
Visibility—
Dew point50°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3157° / 47°0.06
57 °
Crystal Brook, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high57°
Average low47°
Average precipitation0.06 in
Chance of precipitation23%
Record high78° (2024)
Record low35° (2020)
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)
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.