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Will it freeze in Rolla 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 39°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 39°F Above 36°F · Slight Chance Rain Showers then Slight Chance Drizzle
- Fri, Nov 6 29°F Freeze · Widespread Frost
- Sat, Nov 7 30°F Freeze · Widespread Frost
- Sun, Nov 8 33°F Frost possible · Clear then Areas Of Frost
- Mon, Nov 9 38°F Above 36°F · Clear
- Tue, Nov 10 40°F Above 36°F · Mostly Clear
- Wed, Nov 11 41°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 Rolla
The median first fall hard-freeze date (28°F) is November 10, from NOAA’s 1991–2020 Climate Normals at Rolla Missouri S&T. 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 1 · Apr 18 · May 2 | Oct 7 · Oct 21 · Nov 1 | 186 days |
| 32°F freeze | Mar 21 · Apr 5 · Apr 22 | Oct 18 · Nov 1 · Nov 15 | 207 days |
| 28°F hard freeze | Mar 10 · Mar 26 · Apr 10 | Oct 28 · Nov 10 · Nov 28 | 229 days |
Average high temperature by month
1991–2020 normals at Rolla Missouri S&T
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 Rolla, MO come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Rolla Missouri S&T (station USC00237263, elevation 1,173 ft), 1.1 mi from Rolla. 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 Rolla
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| St. Robert, MO | 23 mi | Apr 15 | Oct 21 |
| Waynesville, MO | 27 mi | Apr 15 | Oct 21 |
| Sullivan, MO | 37 mi | Apr 11 | Oct 23 |
| Jefferson City, MO | 48 mi | Apr 8 | Oct 31 |
| Osage Beach, MO | 50 mi | Mar 31 | Nov 3 |
| Lebanon, MO | 53 mi | Apr 17 | Oct 21 |
| Union, MO | 53 mi | Apr 11 | Oct 23 |
| Washington, MO | 58 mi | Apr 8 | Oct 25 |
| Fulton, MO | 63 mi | Apr 10 | Oct 24 |
| Ashland, MO | 65 mi | Apr 7 | Oct 29 |
Frequently asked questions
When is the last frost in Rolla?
On average, the last spring frost (32°F) in Rolla is around April 5. In about 1 year in 10 it comes after April 22, and in 9 years in 10 it comes after March 21.
When is the first frost in Rolla?
The first fall frost (32°F) usually arrives around November 1. There’s a 10% chance of a freeze by October 18 and a 90% chance by November 15.
Can it frost in Rolla 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 18.
What growing zone is Rolla?
Rolla is in USDA Plant Hardiness Zone 6b (average annual extreme minimum temperature −5 to 0°F), based on the 2023 USDA map for ZIP code 65409. See growing zones in Missouri.
More: all Missouri frost dates · Missouri growing zones · frost vs. freeze