Typically the weather in Rhododendron all through May is 13. Average high is typically 18 with low daily temperautes being 11 celsius. We have put some more information here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 13 |
| High Temperature | 18 |
| Low Temperature | 11 |
Useful Links: Rhododendron Weather: Average Weather & Yearly Climate