What’s the climate like in Long Island?
The current climate of Long Island features average monthly temperatures ranging from highs of 18°C during the day to lows of 5°C. The average yearly temperature is around 12°C. At night, temperatures in the colder months average around 0°C and in the warmer months around 12°C.
The highest temperature recorded in Long Island in recent years was 30°C in May 2023. The lowest daytime temperature recorded was -9°C in January 2020.
On average, Long Island gets 2226 mm of precipitation each year. Of this, about 102 cm is snowfall. For comparison, London gets 701 mm of precipitation each year.
Best time to visit Long Island?
The best time to visit Long Island for pleasant to warm weather is June through September. There might be some rain during this period, but the temperatures are just right for exploring Long Island.
Climate Table of Long Island
The climate table of Long Island shows the average temperatures, precipitation, snow, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Temp. max (°C) | 6 | 5 | 8 | 11 | 14 | 16 | 18 | 18 | 16 | 12 | 8 | 5 |
| Temp. min (°C) | 2 | 0 | 1 | 3 | 7 | 10 | 12 | 12 | 10 | 6 | 3 | 1 |
| Precipitation |  |
|
|
|
|
|
|
|
|
|
|
|
| Precipitation (mm) | 222 | 223 | 156 | 153 | 113 | 101 | 129 | 215 | 204 | 282 | 228 | 200 |
| Snow (cm) | 16 | 35 | 17 | 6,9 | 0 | 0 | 0 | 0 | 0 | 0,1 | 8,4 | 18 |
| UV Index | 1 | 2 | 4 | 5 | 6 | 6 | 5 | 5 | 4 | 2 | 1 | 1 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 12°C
- Highest temperature: 18°C in July and August
- Lowest temperature: 5°C in February and December
- Precipitation*: 2226 mm per year, averaging 186 mm per month
- Snowfall: 102 cm per year
- Driest months: 101 mm in June, 113 mm in May and 129 mm in July
- Wettest months: 282 mm in October, 228 mm in November and 223 mm in February
*Precipitation is measured as a combination of rain, snow, and hail
Plan your next holiday
Don’t miss the best holiday deals for Long Island and see what our partners have for you.
Table of Contents
Average Temperature per Month in Long Island
This graph shows the average maximum temperatures per month in Long Island, Alaska. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Long Island
This graph shows how much precipitation Long Island, Alaska, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average Snowfall per Month in Long Island
This graph shows how much snow Long Island, Alaska, gets on average per month. The amount of snowfall is measured in centimetres and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in Long Island
This graph shows the average UV index per month in Long Island, Alaska. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Long Island
This graph shows the average yearly temperature in Long Island, Alaska. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Long Island
This chart shows the total yearly precipitation in Long Island, Alaska, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in Long Island
This chart shows the total yearly snowfall in Long Island, Alaska, over the past few years. The total yearly snowfall, measured in centimetres, is the sum of all the snow that fell in the twelve months of that year.
Weather experiences in Long Island
Have you been to Long Island?
Share your weather experiences in Long Island.
Average Weather in Long Island by Month
Click on a month below to see detailed weather info for Long Island. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
