Annual mean 12°C · wettest around February · prevailing wind SW
Warmest
27.4 °C
Coldest
2.3 °C
Wettest
13%
Windiest
5.4 m/s
Prevailing
SW
4.6 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Stony Brook University over the whole year is 12°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -1°C. Stony Brook University has no sharply defined rainy season: the chance of rain on a given day runs from 6% in June, the driest month, to 13% in February, the wettest. Winds in Stony Brook University are highest in March, averaging 4.2 m/s (15 km/h), and lightest in July, at 3.0 m/s (11 km/h). The prevailing wind is from the SW. The clearest skies in Stony Brook University come in November, when the sky is typically 41% covered; May is the cloudiest month, at 54%.
Month by month Stony Brook University climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
3°C
-1°C
-3°C
10%
52%
4.0 m/s
0
0
7
February
4°C
0°C
-2°C
13%
50%
3.7 m/s
1
0
13
March
8°C
3°C
2°C
10%
49%
4.2 m/s
2
0
26
April
12°C
7°C
8°C
11%
52%
4.0 m/s
14
1
55
May
18°C
13°C
15°C
10%
54%
3.5 m/s
52
7
79
June
24°C
18°C
23°C
6%
44%
3.3 m/s
79
33
54
July
27°C
22°C
28°C
7%
42%
3.0 m/s
47
69
14
August
26°C
21°C
27°C
6%
41%
3.0 m/s
58
60
23
September
23°C
17°C
22°C
8%
45%
3.1 m/s
77
28
58
October
17°C
12°C
15°C
10%
48%
3.3 m/s
51
5
77
November
11°C
5°C
6°C
8%
41%
3.6 m/s
12
0
44
December
5°C
1°C
-0°C
12%
52%
3.6 m/s
0
0
15
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Stony Brook University weather by season
Year round, Stony Brook University has days of about 3°C at their warmest in January, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from -1°C to 22°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around February and least likely around June. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Stony Brook University weather in winterDecember to February
High 4°CLow 0°CRain 12%
Winter in Stony Brook University has typical daily highs of about 4°C and lows of about 0°C, with a 12% chance of rain on a given day.
Stony Brook University weather in springMarch to May
High 13°CLow 7°CRain 10%
Spring in Stony Brook University has typical daily highs of about 13°C and lows of about 7°C, with a 10% chance of rain on a given day.
Stony Brook University weather in summerJune to August
High 26°CLow 20°CRain 6%
Summer in Stony Brook University has typical daily highs of about 26°C and lows of about 20°C, with a 6% chance of rain on a given day.
Stony Brook University weather in autumnSeptember to November
High 17°CLow 11°CRain 9%
Autumn in Stony Brook University has typical daily highs of about 17°C and lows of about 11°C, with a 9% chance of rain on a given day.
When is the rainy season in Stony Brook University?
Stony Brook University has no sharply defined rainy season: the chance of rain on a given day runs from 6% in June, the driest month, to 13% in February, the wettest.
What time of year is Stony Brook University windiest?
Winds in Stony Brook University are highest in March, averaging 4.2 m/s (15 km/h), and lightest in July, at 3.0 m/s (11 km/h). The prevailing wind is from the SW.
What is the average temperature in Stony Brook University year round?
The average temperature in Stony Brook University over the whole year is 12°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -1°C.