Knox County, Nebraska · Frost dates
Knox County frost dates.
First-frost, last-frost, and growing-season length for Knox County, Nebraska. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- 05-09
- 20%
- 05-05
- 50%
- 04-25
- 80%
- 04-15
- 90%
- 04-09
First fall frost
- 10%
- 09-27
- 20%
- 10-02
- 50%
- 10-13
- 80%
- 10-23
- 90%
- 10-27
28°F — killing freeze
Last spring freeze
- 10%
- 04-28
- 20%
- 04-23
- 50%
- 04-15
- 80%
- 04-06
- 90%
- 04-02
First fall freeze
- 10%
- 10-06
- 20%
- 10-14
- 50%
- 10-23
- 80%
- 11-01
- 90%
- 11-05
Growing season length (days, 28°F threshold)
- Short year
- 161
- Median
- 191
- Long year
- 217
Source NOAA station
NIOBRARA, NE US
11.1 mi · 30 yrs of record (1991–2020) · 1234 ft elev.
Data from NIOBRARA, NE US, 11.1 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
14-day free trial. No credit card. Cancel anytime.