Riverhead (NY) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Riverhead.
Climate overview of Riverhead
Riverhead, New York State, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 28°C (82°F) in July, while winters cool to 4°C (39°F) in January.
With around 1167 mm (46 in) of annual rain/snowfall, Riverhead has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has warm summers and cold winters. The wettest month is December.
Riverhead Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Riverhead - and find the best time to visit.
Monthly Temperature in Riverhead
Depending on the time of the year, temperatures range from comfortable to chilly in Riverhead. Average daytime temperatures reach a comfortable 28°C (82°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 4°C (39°F).
At night, temperatures range from around 19°C (66°F) in July to -5°C (23°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Riverhead
Riverhead has a relatively rain/snowy climate with high precipitation levels, averaging 1167 mm (46 in) of rain/snowfall annually. Despite minor fluctuations, Riverhead enjoys fairly consistent precipitation throughout the year. In December, you can expect around 132 mm (5.2 in) of precipitation, while in July, Riverhead receives about 83 mm (3.3 in). For more details, please visit our Riverhead Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Riverhead
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, July, August and September
- Warmest weather: July and August
- Seasonal pattern: Warm summers and cold winters
- Coldest conditions: January, with freezing nights around -5°C (23°F).
Frequently asked questions about the climate in Riverhead
What is the best time to visit Riverhead?
May, July, August and September typically offer the most optimal weather in Riverhead. In contrast, January, February, March and December tend to have less optimal conditions. Riverhead has warm summers and cold winters.
What temperatures can I expect in Riverhead?
Daytime highs range from 4°C (39°F) in January to 28°C (82°F) in July. Nighttime lows range from -5°C (23°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does Riverhead get?
Annual rainfall is around 1167 mm (46 in). December is the wettest month with 132 mm (5.2 in), while July is the driest with 83 mm (3.3 in).
Riverhead 3-Day Forecast
Riverhead on the map
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