Climate and Average Weather Year Round in Stony Brook New York, United States

In Stony Brook, the summers are warm and humid; the winters are very cold, snowy, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 25°F to 82°F and is rarely below 12°F or above 89°F.

Weather forecast Stony Brook
Weather forecast Stony Brook

Based on the tourism score, the best time of year to visit Stony Brook for warm-weather activities is from mid June to late September.

Average Temperature in Stony Brook 

The warm season lasts for 3.4 months, from June 5 to September 18, with an average daily high temperature above 73°F. The hottest month of the year in Stony Brook is July, with an average high of 81°F and low of 68°F.

The cold season lasts for 3.3 months, from December 6 to March 15, with an average daily high temperature below 47°F. The coldest month of the year in Stony Brook is January, with an average low of 26°F and high of 39°F.

Rainfall 

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Stony Brook experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Stony Brook. The month with the most rain in Stony Brook is April, with an average rainfall of 3.8 inches.

The month with the least rain in Stony Brook is February, with an average rainfall of 2.4 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Stony Brook experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 4.4 months, from November 24 to April 4, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Stony Brook is February, with an average snowfall of 6.1 inches.

The snowless period of the year lasts for 7.6 months, from April 4 to November 24. The least snow falls around July 30, with an average total accumulation of 0.0 inches.

Weather forecast March 31, 2023

Weather forecast March 31, 2023 - P6

Weather 11694

High temperature : 44°F

Low temperature : 36°F

- Overcast clouds, Wind speed 9.22 mph, wind out of the NW. Visibility 7 mi, humidity 33% . Chance of Rain : 0 % .

Today's Air Quality - Weather 11694 : Poor

- Air Quality Index : CO : 934.6 ; NH3 : 8.36 ; NO : 46.05 ; NO2 : 106.93 ; O3 : 0 ; PM10 : 49.78 ; PM2.5 : 33.01 ; SO2 : 5.72

Weather 11695

High temperature : 44°F

Low temperature : 34°F

- Overcast clouds, Wind speed 9.22 mph, wind out of the NW. Visibility 7 mi, humidity 34% . Chance of Rain : 0 % .

Today's Air Quality - Weather 11695 : Poor

- Air Quality Index : CO : 934.6 ; NH3 : 8.36 ; NO : 46.05 ; NO2 : 106.93 ; O3 : 0 ; PM10 : 49.78 ; PM2.5 : 33.01 ; SO2 : 5.72

Weather 11697

High temperature : 44°F

Low temperature : 34°F

- Overcast clouds, Wind speed 9.22 mph, wind out of the NW. Visibility 7 mi, humidity 33% . Chance of Rain : 0 % .

Today's Air Quality - Weather 11697 : Poor

- Air Quality Index : CO : 934.6 ; NH3 : 8.36 ; NO : 46.05 ; NO2 : 106.93 ; O3 : 0 ; PM10 : 49.78 ; PM2.5 : 33.01 ; SO2 : 5.72

Weather 11701

High temperature : 43°F

Low temperature : 36°F

- Overcast clouds, Wind speed 3.44 mph, wind out of the NW. Visibility 7 mi, humidity 45% . Chance of Rain : 0 % .

Today's Air Quality - Weather 11701 : Poor

- Air Quality Index : CO : 587.46 ; NH3 : 4.12 ; NO : 3.44 ; NO2 : 78.83 ; O3 : 5.5 ; PM10 : 30.71 ; PM2.5 : 14.41 ; SO2 : 3.87

Weather 11702

High temperature : 43°F

Low temperature : 36°F

- Overcast clouds, Wind speed 3.44 mph, wind out of the NW. Visibility 7 mi, humidity 44% . Chance of Rain : 0 % .

Today's Air Quality - Weather 11702 : Moderate

- Air Quality Index : CO : 413.9 ; NH3 : 2.25 ; NO : 0.04 ; NO2 : 43.87 ; O3 : 39.7 ; PM10 : 15.01 ; PM2.5 : 6.63 ; SO2 : 2.21

Weather 32065

High temperature : 66°F

Low temperature : 59°F

- Overcast clouds, Wind speed 18.41 mph, wind out of the N. Visibility 7 mi, humidity 79% . Chance of Rain : 0 % .

Today's Air Quality - Weather 32065 : Moderate

- Air Quality Index : CO : 253.68 ; NH3 : 1.65 ; NO : 0.14 ; NO2 : 4.8 ; O3 : 66.52 ; PM10 : 13.51 ; PM2.5 : 11.12 ; SO2 : 0.98

Weather 11704

High temperature : 41°F

Low temperature : 35°F

- Overcast clouds, Wind speed 3.44 mph, wind out of the NW. Visibility 7 mi, humidity 46% . Chance of Rain : 0 % .

Today's Air Quality - Weather 11704 : Moderate

- Air Quality Index : CO : 413.9 ; NH3 : 2.25 ; NO : 0.04 ; NO2 : 43.87 ; O3 : 39.7 ; PM10 : 15.01 ; PM2.5 : 6.63 ; SO2 : 2.21

Weather 11705

High temperature : 40°F

Low temperature : 36°F

- Overcast clouds, Wind speed 5.75 mph, wind out of the W. Visibility 7 mi, humidity 46% . Chance of Rain : 20 % .

Today's Air Quality - Weather 11705 : Moderate

- Air Quality Index : CO : 323.77 ; NH3 : 1.49 ; NO : 0 ; NO2 : 20.05 ; O3 : 79.39 ; PM10 : 6.36 ; PM2.5 : 3.69 ; SO2 : 1.85

Weather 11225

High temperature : 45°F

Low temperature : 34°F

- Overcast clouds, Wind speed 9.22 mph, wind out of the NW. Visibility 7 mi, humidity 30% . Chance of Rain : 0 % .

Today's Air Quality - Weather 11225 : Poor

- Air Quality Index : CO : 741.01 ; NH3 : 7.16 ; NO : 27.72 ; NO2 : 90.48 ; O3 : 0.27 ; PM10 : 33.53 ; PM2.5 : 23.05 ; SO2 : 5.01

Weather 11707

High temperature : 42°F

Low temperature : 36°F

- Overcast clouds, Wind speed 3.44 mph, wind out of the NW. Visibility 7 mi, humidity 46% . Chance of Rain : 0 % .

Today's Air Quality - Weather 11707 : Moderate

- Air Quality Index : CO : 413.9 ; NH3 : 2.25 ; NO : 0.04 ; NO2 : 43.87 ; O3 : 39.7 ; PM10 : 15.01 ; PM2.5 : 6.63 ; SO2 : 2.21

Weather 01852 - Lowell MA

clear sky

77°

clear sky

Feels like 76°
Sunrise/Sunset - 01852
Sunrise/Sunset

05:31/19:51

Temperature - 01852
High/Low

81°F

/

69°F

Humidity in 01852
Humidity

30%

Pressure
Pressure

1003 hPa

Visibility
Visibility

7 mi

Wind
Wind

6.91 mph