Smithtown, NY weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Smithtown now
Loading the National Weather Service forecast…
Smithtown weather by the hour
Smithtown weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Smithtown.
This week in Smithtown
Sunrise, sunset and moon in Smithtown
What is the weather usually like in Smithtown?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 83°F average high
- Januarycoldest month · 25°F average low
- 46.0 inprecipitation per year · 1,168 mm
- 31.8 insnowfall per year · 81 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Smithtown: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station ISLIP LI MACARTHUR AP, NY US (USW00004781), adjusted for the elevation of Smithtown.
Smithtown weather month by month
Sunrise and sunset in Smithtown through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:13 AM | 4:51 PM | 9 h 37 min |
| February | 6:45 AM | 5:28 PM | 10 h 43 min |
| March | 7:02 AM | 7:00 PM | 11 h 58 min |
| April | 6:11 AM | 7:33 PM | 13 h 21 min |
| May | 5:33 AM | 8:04 PM | 14 h 31 min |
| June | 5:18 AM | 8:27 PM | 15 h 8 min |
| July | 5:32 AM | 8:24 PM | 14 h 52 min |
| August | 6:01 AM | 7:52 PM | 13 h 51 min |
| September | 6:32 AM | 7:03 PM | 12 h 31 min |
| October | 7:03 AM | 6:14 PM | 11 h 11 min |
| November | 6:38 AM | 4:36 PM | 9 h 57 min |
| December | 7:08 AM | 4:27 PM | 9 h 18 min |
Times for the 15th of each month, local time (America/New York).
What is the weather like in Smithtown?
Smithtown has a hot-summer humid continental climate. The warmest month is July, with an average high of 83°F (28°C), and the coldest is January, with average lows of 25°F (-4°C).
It gets about 46.0 inches (1,168 mm) of precipitation a year. The wettest month is December and the driest is July. Snow is common: about 32 inches fall in an average year.
The best time to visit Smithtown is June to September. At 59 ft of elevation, nights are mild most of the year. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about Smithtown
Weather in towns near Smithtown
Questions about the weather in Smithtown
What is the hottest month in Smithtown?
July, with an average high of 83°F (28°C).
What is the coldest month in Smithtown?
January, with an average low of 25°F (-4°C).
How much does it rain in Smithtown?
About 46.0 inches (1,168 mm) a year; the wettest month is December.
Does it snow in Smithtown?
Yes, about 32 inches of snow fall in an average year.
When is the best time to visit Smithtown?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Smithtown have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in Smithtown in November?
Highs average 54°F and lows 38°F, with about 3.4 inches of precipitation.
What time is sunrise in Smithtown?
Around 6:38 AM in mid-November, and sunset around 4:36 PM. Today’s exact times are shown above.
Where does this Smithtown weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Smithtown.
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