As of 07:15 EDT

Weather in Stony Brook, NY

55°Current weather

Stony Brook, Monday, 12 October, 07:15

Partly cloudy. Feels like 55°. High 69°, low 54°.

Pressure29.71 inHg
Wind19 mph NE
Humidity93%
Visibility6.2 mi
Dew point53°

Monthly outlook for Stony Brook, NY: average high 60.9°, average low 51.2°. That is 0.2° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 5 days and 2.2 inches. The warmest day looks like 14 October (72°), the coolest 18 October (39.5°).

60.9°/51.2°
Average high / low
+0.2°
Above normal
3 / 5
Wet days / normal
0.8 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
12 October – 21 October62.9°61.5°+0.8°
22 October – 31 October57.7°58.3°-0.3°
1 November – 10 Novemberat normal55.7°—

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 (0 mi).

Tue, 1368° / 53°0.01Light rain
68 °Light rain

Stony Brook, Tuesday, 13 October

Light rain. High 68°, low 53°.

Pressure29.97 inHg
Wind8.5 mph SE
Humidity79%
Visibility6.2 mi
Dew point60°
Wed, 1472° / 65°0Mostly clear
72 °Mostly clear

Stony Brook, Wednesday, 14 October

Mostly clear. High 72°, low 65°.

Pressure29.85 inHg
Wind12 mph W
Humidity81%
Visibility6.2 mi
Dew point64°
Thu, 1564° / 57°0Overcast
64 °Overcast

Stony Brook, Thursday, 15 October

Overcast. High 64°, low 57°.

Pressure30.21 inHg
Wind9.9 mph N
Humidity58%
Visibility6.2 mi
Dew point44°
Fri, 1664° / 55°0.34Rain
64 °Rain

Stony Brook, Friday, 16 October

Rain. High 64°, low 55°.

Pressure29.71 inHg
Wind28.9 mph W
Humidity90%
Visibility—
Dew point57°
Sat, 1754° / 46°0Clear
54 °Clear

Stony Brook, Saturday, 17 October

Clear. High 54°, low 46°.

Pressure30.09 inHg
Wind24.8 mph NW
Humidity53%
Visibility—
Dew point32°
Sun, 1852° / 40°0Clear
52 °Clear

Stony Brook, Sunday, 18 October

Clear. High 52°, low 40°.

Pressure30.56 inHg
Wind15.6 mph SW
Humidity35%
Visibility—
Dew point17°
Mon, 1962° / 51°0Clear
62 °Clear

Stony Brook, Monday, 19 October

Clear. High 62°, low 51°.

Pressure30.50 inHg
Wind16.2 mph SW
Humidity50%
Visibility—
Dew point37°
Tue, 2066° / 56°0Overcast
66 °Overcast

Stony Brook, Tuesday, 20 October

Overcast. High 66°, low 56°.

Pressure30.33 inHg
Wind13.1 mph W
Humidity52%
Visibility—
Dew point42°
Wed, 2159° / 53°0Clear
59 °Clear

Stony Brook, Wednesday, 21 October

Clear. High 59°, low 53°.

Pressure30.45 inHg
Wind15.1 mph NE
Humidity53%
Visibility—
Dew point38°
Thu, 2257° / 51°0Partly cloudy
57 °Partly cloudy

Stony Brook, Thursday, 22 October

Partly cloudy. High 57°, low 51°.

Pressure30.59 inHg
Wind9.2 mph S
Humidity58%
Visibility—
Dew point40°
Fri, 2363° / 55°0.01Light rain
63 °Light rain

Stony Brook, Friday, 23 October

Light rain. High 63°, low 55°.

Pressure30.33 inHg
Wind20.8 mph SW
Humidity63%
Visibility—
Dew point46°
Sat, 2456° / 45°0.24Rain
56 °Rain

Stony Brook, Saturday, 24 October

Rain. High 56°, low 45°.

Pressure30.15 inHg
Wind21.5 mph W
Humidity60%
Visibility—
Dew point41°
Sun, 2555° / 43°0Clear
55 °Clear

Stony Brook, Sunday, 25 October

Clear. High 55°, low 43°.

Pressure30.30 inHg
Wind13.7 mph N
Humidity42%
Visibility—
Dew point24°
Mon, 2659° / 50°0.19Rain
59 °Rain

Stony Brook, Monday, 26 October

Rain. High 59°, low 50°.

Pressure29.83 inHg
Wind15.2 mph W
Humidity62%
Visibility—
Dew point45°
Tue, 2757° / 46°0Clear
57 °Clear

Stony Brook, Tuesday, 27 October

Clear. High 57°, low 46°.

Pressure29.97 inHg
Wind11.8 mph N
Humidity62%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2858° / 48°0.17Climate normal
58 °Climate normal

Stony Brook, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high58°
Average low48°
Average precipitation0.17 in
Chance of precipitation33%
Record high79° (2023)
Record low33° (1976)
Thu, 2956° / 47°0.19Climate normal
56 °Climate normal

Stony Brook, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high56°
Average low47°
Average precipitation0.19 in
Chance of precipitation25%
Record high72° (1984)
Record low34° (1965)
Fri, 3056° / 46°0.12Climate normal
56 °Climate normal

Stony Brook, Friday, 30 October

Climate normal for this date — 60-year average.

Average high56°
Average low46°
Average precipitation0.12 in
Chance of precipitation25%
Record high72° (2024)
Record low36° (2011)
Sat, 3157° / 47°0.06Climate normal
57 °Climate normal

Stony 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°0.14Climate normal
58 °Climate normal

Stony 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°0.08Climate normal
57 °Climate normal

Stony 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°0.12Climate normal
57 °Climate normal

Stony 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°0.05Climate normal
56 °Climate normal

Stony 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°0.15Climate normal
56 °Climate normal

Stony 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°0.11Climate normal
55 °Climate normal

Stony 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°0.1Climate normal
55 °Climate normal

Stony 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°0.17Climate normal
54 °Climate normal

Stony 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°0.1Climate normal
54 °Climate normal

Stony 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°0.17Climate normal
55 °Climate normal

Stony 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)

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 Stony 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 Stony 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.