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Will it freeze in Sidney in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Tonight: 32°F (Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST).
Tonight: forecast low 32°F. Freeze.
NWS forecast period: Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST.
4 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 32°F Freeze · Partly Cloudy
- Fri, Nov 6 34°F Frost possible · Mostly Clear
- Sat, Nov 7 32°F Freeze · Mostly Clear
- Sun, Nov 8 38°F Above 36°F · Clear
- Mon, Nov 9 35°F Frost possible · Mostly Clear
- Tue, Nov 10 38°F Above 36°F · Partly Cloudy
- Wed, Nov 11 37°F Above 36°F · Mostly Clear
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Sidney
The median first fall hard-freeze date (28°F) is October 9, from NOAA’s 1991–2020 Climate Normals at Sidney Municipal Airport. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | May 12 · May 26 · Jun 11 | Sep 7 · Sep 21 · Oct 2 | 116 days |
| 32°F freeze | May 4 · May 15 · May 30 | Sep 15 · Sep 30 · Oct 12 | 135 days |
| 28°F hard freeze | Apr 23 · May 5 · May 17 | Sep 26 · Oct 9 · Oct 21 | 154 days |
Average high temperature by month
1991–2020 normals at Sidney Municipal Airport
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Sidney, NE come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Sidney Municipal Airport (station USW00024030, elevation 4,309 ft), 2.4 mi from Sidney. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Sidney
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Sterling, CO | 37 mi | Apr 30 | Oct 9 |
| Gering, NE | 60 mi | May 8 | Oct 3 |
| Scottsbluff, NE | 62 mi | May 8 | Oct 3 |
| Alliance, NE | 67 mi | May 11 | Oct 3 |
| Brush, CO | 70 mi | May 6 | Oct 6 |
| Fort Morgan, CO | 75 mi | May 6 | Oct 6 |
| Torrington, WY | 89 mi | May 11 | Sep 29 |
| Cheyenne, WY | 95 mi | May 14 | Oct 1 |
| Eaton, CO | 101 mi | May 2 | Oct 8 |
| Greeley, CO | 107 mi | May 2 | Oct 8 |
Frequently asked questions
When is the last frost in Sidney?
On average, the last spring frost (32°F) in Sidney is around May 15. In about 1 year in 10 it comes after May 30, and in 9 years in 10 it comes after May 4.
When is the first frost in Sidney?
The first fall frost (32°F) usually arrives around September 30. There’s a 10% chance of a freeze by September 15 and a 90% chance by October 12.
Can it frost in Sidney after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after May 26.
What growing zone is Sidney?
Sidney is in USDA Plant Hardiness Zone 5b (average annual extreme minimum temperature −15 to −10°F), based on the 2023 USDA map for ZIP code 69162. See growing zones in Nebraska.
More: all Nebraska frost dates · Nebraska growing zones · frost vs. freeze