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Will it freeze in Plano in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Fri, Nov 6: 29°F (Fri, Nov 6, 6:00 PM CST to Sat, Nov 7, 6:00 AM CST).
Tonight: forecast low 37°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
3 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 37°F Above 36°F · Areas Of Drizzle then Mostly Cloudy
- Fri, Nov 6 29°F Freeze · Mostly Clear
- Sat, Nov 7 32°F Freeze · Mostly Clear
- Sun, Nov 8 34°F Frost possible · Mostly Clear
- Mon, Nov 9 39°F Above 36°F · Mostly Clear
- Tue, Nov 10 37°F Above 36°F · Partly Cloudy
- Wed, Nov 11 37°F Above 36°F · Partly Cloudy
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 Plano
The median first fall hard-freeze date (28°F) is October 23, from NOAA’s 1991–2020 Climate Normals at Chicago Aurora 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 | Apr 24 · May 6 · May 23 | Sep 20 · Oct 2 · Oct 14 | 147 days |
| 32°F freeze | Apr 14 · Apr 28 · May 11 | Sep 27 · Oct 13 · Oct 24 | 166 days |
| 28°F hard freeze | Apr 3 · Apr 18 · May 4 | Oct 6 · Oct 23 · Nov 4 | 187 days |
Average high temperature by month
1991–2020 normals at Chicago Aurora 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 Plano, IL come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Chicago Aurora Municipal Airport (station USW00004808, elevation 710 ft), 6.8 mi from Plano. 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 Plano
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Sandwich, IL | 5.0 mi | Apr 28 | Oct 13 |
| Yorkville, IL | 5.6 mi | Apr 28 | Oct 13 |
| Sugar Grove, IL | 8.1 mi | Apr 28 | Oct 13 |
| Montgomery, IL | 9.3 mi | Apr 19 | Oct 23 |
| Oswego, IL | 9.9 mi | Apr 19 | Oct 23 |
| North Aurora, IL | 14 mi | Apr 19 | Oct 23 |
| Aurora, IL | 14 mi | Apr 19 | Oct 23 |
| Elburn, IL | 15 mi | Apr 28 | Oct 13 |
| Batavia, IL | 16 mi | Apr 19 | Oct 23 |
| Plainfield, IL | 17 mi | Apr 20 | Oct 22 |
Frequently asked questions
When is the last frost in Plano?
On average, the last spring frost (32°F) in Plano is around April 28. In about 1 year in 10 it comes after May 11, and in 9 years in 10 it comes after April 14.
When is the first frost in Plano?
The first fall frost (32°F) usually arrives around October 13. There’s a 10% chance of a freeze by September 27 and a 90% chance by October 24.
Can it frost in Plano 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 6.
What growing zone is Plano?
Plano 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 60545. See growing zones in Illinois.
More: all Illinois frost dates · Illinois growing zones · frost vs. freeze