St. Albans, Vermont climate: Normal weather by month, frost dates and records
St. Albans's normal year runs from 8°F January nights to 79°F July afternoons, with 38.3 inches of precipitation and 80 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.1°C, January lows of −13°C, July highs of 26°C, 973 mm of precipitation a year.
- NOAA stationSt Albans Radio
- Station IDUSC00437032
- Location44.86°N 73.09°W
- Elevation380 ft (116 m)
- Population7,031
On October 14, the normal high in St. Albans is 57°F and the normal low 40°F, and the chance of measurable rain or snow is 36%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for St. Albans.
- Jan 25° 8°
- Feb 29° 10°
- Mar 37° 20°
- Apr 52° 33°
- May 66° 46°
- Jun 74° 56°
- Jul 79° 61°
- Aug 77° 59°
- Sep 69° 51°
- Oct 56° 40°
- Nov 44° 30°
- Dec 32° 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 St. Albans each month?
July is the warmest month, with normal highs of 79°F; January the coldest, with normal lows of 8°F. The most precipitation falls in June (4.11 in), the least in February (1.85 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 25°F | 8°F | 16.7°F | 2.12 | 16.9 | 13 | <1 | 29 | 9 h 10 min |
| February | 29°F | 10°F | 19.4°F | 1.85 | 18.3 | 10 | <1 | 26 | 10 h 20 min |
| March | 37°F | 20°F | 28.4°F | 2.63 | 16.2 | 11 | <1 | 27 | 11 h 50 min |
| April | 52°F | 33°F | 42.7°F | 3.23 | 6.2 | 11 | <1 | 13 | 13 h 30 min |
| May | 66°F | 46°F | 56.0°F | 3.24 | 0.1 | 11 | <1 | 1 | 14 h 50 min |
| June | 74°F | 56°F | 65.1°F | 4.11 | 0.0 | 12 | 1 | <1 | 15 h 30 min |
| July | 79°F | 61°F | 70.1°F | 4.10 | 0.0 | 12 | 1 | <1 | 15 h 20 min |
| August | 77°F | 59°F | 68.0°F | 3.74 | 0.0 | 11 | 1 | <1 | 14 h 10 min |
| September | 69°F | 51°F | 60.2°F | 3.93 | 0.0 | 10 | <1 | 1 | 12 h 40 min |
| October | 56°F | 40°F | 47.9°F | 3.86 | 1.2 | 11 | <1 | 7 | 11 h |
| November | 44°F | 30°F | 36.8°F | 2.86 | 5.0 | 11 | <1 | 17 | 9 h 40 min |
| December | 32°F | 18°F | 25.0°F | 2.62 | 16.0 | 13 | <1 | 27 | 8 h 50 min |
| Year (annual) | 53°F | 36°F | 44.7°F | 38.29 | 79.9 | 137 | 3 | 148 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −4°C | −13°C | −8.5°C | 54 mm | 43 cm |
| February | −2°C | −12°C | −7.0°C | 47 mm | 46 cm |
| March | 3°C | −7°C | −2.0°C | 67 mm | 41 cm |
| April | 11°C | 1°C | 5.9°C | 82 mm | 16 cm |
| May | 19°C | 8°C | 13.3°C | 82 mm | 0 cm |
| June | 24°C | 13°C | 18.4°C | 104 mm | 0 cm |
| July | 26°C | 16°C | 21.2°C | 104 mm | 0 cm |
| August | 25°C | 15°C | 20.0°C | 95 mm | 0 cm |
| September | 21°C | 11°C | 15.7°C | 100 mm | 0 cm |
| October | 13°C | 4°C | 8.8°C | 98 mm | 3 cm |
| November | 7°C | −1°C | 2.7°C | 73 mm | 13 cm |
| December | 0°C | −8°C | −3.9°C | 67 mm | 41 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00437032; 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 St. Albans?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, September has the fewest days with rain (10).
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 USC00437032.
When is the last frost in St. Albans?
In St. Albans, the last spring frost (32°F) comes after May 1 in half of years and after May 16 in one year in ten; the first autumn frost comes before October 12 in half of years and before September 28 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
- May 11 year in 10 after May 16; 9 in 10 after April 20
- First autumn frost, half of years before
- October 121 year in 10 before September 28; 9 in 10 before October 26
NOAA puts the median frost-free season at 161 days, and the season without a hard freeze (28°F) at 183 days.
A hard freeze (28°F) comes after April 21 in half of springs and before October 23 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts St. Albans in zone 5a in ZIP code 05478, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, St. Albans's NOAA station is in zone 5a: the coldest night of a typical year reaches −16°F (15 complete years).
Frost dates for every NOAA station in Vermont · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00437032; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 St. Albans?
In a normal year in St. Albans, 3 days a year reach 90°F, 148 nights fall to 32°F or colder and 137 days bring measurable precipitation.
- Days at 90°F or more
- 3a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 148a normal year
- Days that stay below freezing
- 67high of 32°F or less
- Days with 0.01 inch of precipitation
- 137a normal year
- Days with 1 inch of snow or more
- 25a normal year
The highest temperature in this station's record (since 1929) is 99°F, on August 11, 1944; the lowest is −36°F, on December 30, 1933.
The wettest calendar year on that record is 1954, with 48.41 in; the snowiest season is 1953–54, with 121.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00437032; records: ACIS (NOAA Regional Climate Centers), station USC00437032. Records use complete months only; a month missing more than three days is left out.
How sunny is St. Albans?
Over a year 68% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around St. Albans, 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 St. Albans need?
A normal year in St. Albans brings 7,810 heating degree days, 45% more than the median U.S. place (5,373), and 449 cooling degree days, 51% 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 2,304 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,499 | 0 |
| February | 1,275 | 0 |
| March | 1,135 | 0 |
| April | 670 | 1 |
| May | 300 | 19 |
| June | 84 | 87 |
| July | 14 | 174 |
| August | 35 | 130 |
| September | 181 | 37 |
| October | 532 | 2 |
| November | 848 | 0 |
| December | 1,238 | 0 |
| Year (annual) | 7,810 | 449 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00437032. 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 St. Albans's climate compare?
St. Albans is warmer than 17 of the other 28 places with their own NOAA record in Vermont, and wetter than 3. Across the 7,247 U.S. stations with normals, its annual mean of 44.7°F is warmer than 18%.
In the Köppen classification computed from these normals, St. Albans is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near St. Albans share this climate record?
2 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.
- Rouses Point, NY2,192 people · 16 mi NW
- Highgate Center, VT410 people · 6 mi NE
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 St. Albans's climate
What is the coldest month in St. Albans?
January, with a normal high of 25°F and a normal low of 8°F. The warmest is July (79°F by day, 61°F at night).
Does it snow in St. Albans?
Yes: 80 inches in a normal year, falling on 40 days with 0.1 inch or more, the most in February (18.3 inches).
What is the rainiest month in St. Albans?
June, with 4.11 in of precipitation in a normal year; the driest is February with 1.85 in.
What plant hardiness zone is St. Albans in?
The USDA's 2023 map puts St. Albans in zone 5a in ZIP code 05478, the nearest ZIP area. By the same method at St. Albans's NOAA station, the coldest night of a typical year reaches −16°F (15 years, 1991-2020): zone 5a.
How late can frost come in St. Albans?
In half of years the last 32°F night comes after May 1; in one year in ten it comes after May 16. Waiting until May 16 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Vermont climateThe statewide normals and every place in the state
- Enosburg Falls, VT14 miles from this station, 45.5°F a year
- Chazy, NY15 miles from this station, 47.0°F a year
- South Hero, VT19 miles from this station, 46.7°F a year
- Plattsburgh, NY24 miles from this station, 45.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made