Riverhead Weather Forecast
- 35
- 58
Mostly Sunny
- 42
- 56
Partly Sunny
- 44
- 57
Chance Rain
- 46
- 58
Rain Likely
- 45
- 62
Rain Likely
- 44
- 59
Chance Rain
Today 26 Oct Northeast Suffolk
Sunny. Highs in the upper 50s. North Winds 5 to 10 Mph.
Tonight 26 Oct Northeast Suffolk
Mostly clear. Lows in the upper 30s. North Winds 5 to 10 Mph.
Riverhead Temperature Statistics
October Temperature
The Gabreski Airport (5 miles)
Lowest 19 October, 2025
44.1 °FAverage October
60.6 °FHighest 5 October, 2025
79 °F
Climate (2020–Present)
The Gabreski Airport (5 miles)
Average Low 2020–2025
44.1 °FAverage 2020–2025
53.7 °FAverage High 2020–2025
62.2 °F