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Will it freeze in Niles in the next 7 nights?
No overnight lows at or below 32°F are forecast in Niles during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 40°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 40°F Above 36°F · Chance Rain Showers then Mostly Cloudy
- Fri, Nov 6 35°F Frost possible · Partly Cloudy
- Sat, Nov 7 36°F Frost possible · Partly Cloudy
- Sun, Nov 8 38°F Above 36°F · Mostly Clear
- Mon, Nov 9 44°F Above 36°F · Mostly Clear
- Tue, Nov 10 41°F Above 36°F · Partly Cloudy
- Wed, Nov 11 42°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 Niles
The median first fall hard-freeze date (28°F) is November 7, from NOAA’s 1991–2020 Climate Normals at Chicago Ohare Intl 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 15 · Apr 29 · May 13 | Oct 3 · Oct 18 · Oct 30 | 170 days |
| 32°F freeze | Apr 3 · Apr 16 · May 1 | Oct 15 · Oct 28 · Nov 11 | 193 days |
| 28°F hard freeze | Mar 21 · Apr 5 · Apr 19 | Oct 27 · Nov 7 · Nov 22 | 217 days |
Average high temperature by month
1991–2020 normals at Chicago Ohare Intl 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 Niles, IL come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Chicago Ohare Intl Airport (station USW00094846, elevation 658 ft), 6.7 mi from Niles. 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 Niles
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Morton Grove, IL | 1.2 mi | Apr 26 | Oct 21 |
| Park Ridge, IL | 1.9 mi | Apr 16 | Oct 28 |
| Skokie, IL | 3.7 mi | Apr 26 | Oct 21 |
| Glenview, IL | 4.3 mi | Apr 26 | Oct 21 |
| Lincolnwood, IL | 4.3 mi | Apr 26 | Oct 21 |
| Harwood Heights, IL | 4.3 mi | Apr 16 | Oct 28 |
| Norridge, IL | 4.3 mi | Apr 16 | Oct 28 |
| Des Plaines, IL | 5.0 mi | Apr 16 | Oct 28 |
| Wilmette, IL | 5.6 mi | Apr 26 | Oct 21 |
| Northfield, IL | 5.6 mi | Apr 26 | Oct 21 |
Frequently asked questions
When is the last frost in Niles?
On average, the last spring frost (32°F) in Niles is around April 16. In about 1 year in 10 it comes after May 1, and in 9 years in 10 it comes after April 3.
When is the first frost in Niles?
The first fall frost (32°F) usually arrives around October 28. There’s a 10% chance of a freeze by October 15 and a 90% chance by November 11.
Can it frost in Niles 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 April 29.
What growing zone is Niles?
Niles is in USDA Plant Hardiness Zone 6a (average annual extreme minimum temperature −10 to −5°F), based on the 2023 USDA map for ZIP code 60714. See growing zones in Illinois.
More: all Illinois frost dates · Illinois growing zones · UV index today in Niles · frost vs. freeze