Marcellus Weather Forecast
- 53
- 77
Rain Showers Likely
- 47
- 65
Partly Sunny
- 59
- 71
Partly Sunny
- 62
- 77
Chance Rain Showers
- 59
- 79
Rain Showers Likely
- 52
- 72
Chance Rain Showers
Today 13 Sep Onondaga
Mostly cloudy with a chance of Showers in the Morning, then partly sunny with Showers likely with a slight chance of Thunderstorms in the afternoon. Humid with Highs in the upper 70s. Southwest Winds 5 to 10 Mph, becoming west in the afternoon. Chance of rain 70 percent.
Tonight 13 Sep Onondaga
Showers likely. Lows in the lower 50s. West Winds 5 to 10 Mph. Chance of rain 70 percent.
Marcellus Temperature Statistics
September Temperature
Syracuse, Syracuse Hancock International Airport (14.3 miles)
Lowest 7 September, 2026
53.7 °FAverage September
70.8 °FHighest 2 September, 2026
85.6 °F
Climate (2021–2026)
Syracuse, Syracuse Hancock International Airport (14.3 miles)
Average Low 2021–2026
42.6 °FAverage 2021–2026
51.5 °FAverage High 2021–2026
60.6 °F