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Will it freeze in Laconia in the next 7 nights?
The earliest overnight low at or below 32°F in the available NWS frost forecast is Wed, Nov 11: 28°F (Wed, Nov 11, 6:00 PM EST to Thu, Nov 12, 6:00 AM EST).
Tonight: forecast low 56°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM EST to Fri, Nov 6, 6:00 AM EST.
4 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 56°F Above 36°F · Chance Light Rain then Patchy Fog
- Fri, Nov 6 50°F Above 36°F · Light Rain Likely
- Sat, Nov 7 42°F Above 36°F · Light Rain
- Sun, Nov 8 36°F Frost possible · Partly Cloudy then Slight Chance Light Rain
- Mon, Nov 9 33°F Frost possible · Partly Cloudy
- Tue, Nov 10 34°F Frost possible · Partly Cloudy
- Wed, Nov 11 28°F Hard freeze · 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 Laconia
The median first fall hard-freeze date (28°F) is November 1, from NOAA’s 1991–2020 Climate Normals at Lakeport 2. 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 30 · May 10 · May 23 | Sep 25 · Oct 5 · Oct 19 | 149 days |
| 32°F freeze | Apr 19 · Apr 30 · May 13 | Oct 4 · Oct 18 · Nov 3 | 170 days |
| 28°F hard freeze | Apr 6 · Apr 17 · Apr 30 | Oct 16 · Nov 1 · Nov 13 | 196 days |
Average high temperature by month
1991–2020 normals at Lakeport 2
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 Laconia, NH come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Lakeport 2 (station USC00274480, elevation 500 ft), 2.1 mi from Laconia. 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 Laconia
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Franklin, NH | 12 mi | May 7 | Oct 3 |
| Concord, NH | 24 mi | May 8 | Oct 3 |
| Rochester, NH | 32 mi | Apr 30 | Oct 9 |
| Somersworth, NH | 37 mi | Apr 30 | Oct 9 |
| Sanford, ME | 38 mi | May 16 | Sep 30 |
| Lebanon, NH | 39 mi | May 9 | Oct 6 |
| Dover, NH | 40 mi | May 3 | Oct 10 |
| Manchester, NH | 41 mi | Apr 30 | Oct 11 |
| Claremont, NH | 45 mi | May 14 | Oct 1 |
| Portsmouth, NH | 50 mi | May 4 | Oct 8 |
Frequently asked questions
When is the last frost in Laconia?
On average, the last spring frost (32°F) in Laconia is around April 30. In about 1 year in 10 it comes after May 13, and in 9 years in 10 it comes after April 19.
When is the first frost in Laconia?
The first fall frost (32°F) usually arrives around October 18. There’s a 10% chance of a freeze by October 4 and a 90% chance by November 3.
Can it frost in Laconia 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 10.
What growing zone is Laconia?
Laconia 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 03246. See growing zones in New Hampshire.
More: all New Hampshire frost dates · New Hampshire growing zones · frost vs. freeze