Frost dates in Niobrara, NE
The average last spring frost in Niobrara is around May 2 and the first fall frost is around October 2. That gives Niobrara an average growing season of about 153 days.
Last spring frost
| Early (10% chance after) | April 20 |
|---|---|
| Average (50%) | May 2 |
| Late (90%) | May 18 |
First fall frost
| Early (10%) | September 16 |
|---|---|
| Average (50%) | October 2 |
| Late (90% chance before) | October 21 |