Vergennes, Vermont climate: Normal weather by month, frost dates and records
Vergennes's normal year runs from 10°F January nights to 83°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.9°C, January lows of −12°C, July highs of 28°C.
- NOAA stationVergennes
- Station IDUSC00438597
- Location44.17°N 73.25°W
- Elevation196 ft (60 m)
- Population2,582
On October 23, the normal high in Vergennes is 56°F and the normal low 37°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Vergennes.
- Jan 29° 10°
- Feb 32° 10°
- Mar 41° 20°
- Apr 55° 34°
- May 68° 45°
- Jun 77° 56°
- Jul 83° 61°
- Aug 81° 59°
- Sep 73° 51°
- Oct 59° 40°
- Nov 47° 29°
- Dec 36° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Vergennes each month?
July is the warmest month, with normal highs of 83°F; January the coldest, with normal lows of 10°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 29°F | 10°F | 19.4°F | – | <1 | 29 | 9 h 10 min |
| February | 32°F | 10°F | 21.0°F | – | <1 | 27 | 10 h 30 min |
| March | 41°F | 20°F | 30.4°F | – | <1 | 25 | 11 h 50 min |
| April | 55°F | 34°F | 44.4°F | – | <1 | 15 | 13 h 20 min |
| May | 68°F | 45°F | 56.6°F | – | 1 | 2 | 14 h 40 min |
| June | 77°F | 56°F | 66.3°F | – | 2 | <1 | 15 h 30 min |
| July | 83°F | 61°F | 71.7°F | – | 7 | <1 | 15 h 10 min |
| August | 81°F | 59°F | 69.9°F | – | 2 | <1 | 14 h |
| September | 73°F | 51°F | 61.6°F | – | 1 | 1 | 12 h 40 min |
| October | 59°F | 40°F | 49.5°F | – | <1 | 6 | 11 h |
| November | 47°F | 29°F | 37.9°F | – | <1 | 20 | 9 h 40 min |
| December | 36°F | 18°F | 27.0°F | – | <1 | 27 | 8 h 50 min |
| Year (annual) | 57°F | 36°F | 46.3°F | – | 12 | 152 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | −2°C | −12°C | −7.0°C |
| February | 0°C | −12°C | −6.1°C |
| March | 5°C | −7°C | −0.9°C |
| April | 13°C | 1°C | 6.9°C |
| May | 20°C | 7°C | 13.7°C |
| June | 25°C | 13°C | 19.1°C |
| July | 28°C | 16°C | 22.1°C |
| August | 27°C | 15°C | 21.1°C |
| September | 23°C | 10°C | 16.4°C |
| October | 15°C | 4°C | 9.7°C |
| November | 8°C | −2°C | 3.3°C |
| December | 2°C | −8°C | −2.8°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Cornwall (15 miles away), gets 59 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00438597; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Vergennes?
Normal highs sit between 65°F and 85°F in May, June, July, August and September.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00438597.
When is the last frost in Vergennes?
In Vergennes, the last spring frost (32°F) comes after April 30 in half of years and after May 11 in one year in ten; the first autumn frost comes before October 17 in half of years and before October 2 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 301 year in 10 after May 11; 9 in 10 after April 20
- First autumn frost, half of years before
- October 171 year in 10 before October 2; 9 in 10 before November 1
NOAA puts the median frost-free season at 168 days, and the season without a hard freeze (28°F) at 192 days.
A hard freeze (28°F) comes after April 21 in half of springs and before October 30 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Vergennes in zone 5a in ZIP code 05456, the nearest ZIP area.
Frost dates for every NOAA station in Vermont · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00438597; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Vergennes?
In a normal year in Vergennes, 12 days a year reach 90°F and 152 nights fall to 32°F or colder.
- Days at 90°F or more
- 12a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 152a normal year
- Days that stay below freezing
- 49high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00438597.
How sunny is Vergennes?
Over a year 68% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Vergennes, 3.5 kWh per square metre a day. August is the sunniest month (75%) and December the cloudiest (54%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 60% | 1.5 |
| February | 62% | 2.3 |
| March | 65% | 3.4 |
| April | 66% | 4.5 |
| May | 67% | 5.2 |
| June | 69% | 5.6 |
| July | 74% | 5.7 |
| August | 75% | 5.1 |
| September | 75% | 4.0 |
| October | 62% | 2.4 |
| November | 60% | 1.6 |
| December | 54% | 1.1 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Vergennes need?
A normal year in Vergennes brings 7,345 heating degree days, 37% more than the median U.S. place (5,373), and 563 cooling degree days, 38% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,520 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,414 | 0 |
| February | 1,231 | 0 |
| March | 1,074 | 1 |
| April | 621 | 1 |
| May | 281 | 19 |
| June | 66 | 103 |
| July | 9 | 217 |
| August | 15 | 165 |
| September | 158 | 55 |
| October | 485 | 3 |
| November | 813 | 0 |
| December | 1,178 | 0 |
| Year (annual) | 7,345 | 563 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00438597. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Vergennes's climate compare?
Vergennes is warmer than 24 of the other 28 places with their own NOAA record in Vermont. Across the 7,247 U.S. stations with normals, its annual mean of 46.3°F is warmer than 25%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Vergennes share this climate record?
6 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Mineville, NY1,495 people · 15 mi W
- Port Henry, NY1,403 people · 14 mi SW
- Elizabethtown, NY662 people · 17 mi W
- Westport, NY250 people · 9 mi W
- Witherbee, NY190 people · 16 mi SW
- New Haven, VT1,744 people · 6 mi SE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Vergennes's climate
What is the coldest month in Vergennes?
January, with a normal high of 29°F and a normal low of 10°F. The warmest is July (83°F by day, 61°F at night).
Does it snow in Vergennes?
Yes. NOAA publishes no 1991-2020 snowfall normal for Vergennes's NOAA station; the nearest record that keeps one, Cornwall (15 miles away), records 59 inches of snow in a normal year.
What plant hardiness zone is Vergennes in?
The USDA's 2023 map puts Vergennes in zone 5a in ZIP code 05456, the nearest ZIP area.
How late can frost come in Vergennes?
In half of years the last 32°F night comes after April 30; in one year in ten it comes after May 11. Waiting until May 11 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Vermont climateThe statewide normals and every place in the state
- Cornwall, VT15 miles from this station, 45.0°F a year
- South Lincoln, VT15 miles from this station, 41.2°F a year
- Willsboro, NY16 miles from this station, 46.3°F a year
- Salisbury (2 mi N), VT19 miles from this station, 45.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made