Usually average temperatures are Marcellus through the month of May is 14 with highs being 22 with lows of 10 degrees. For more context we have put some more information below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 14 |
| High Temperature | 22 |
| Low Temperature | 10 |
Useful Links: Marcellus Weather: Average Weather & Yearly Climate