Worcester, Vermont climate: Normal weather by month, frost dates and records
Worcester's normal year runs from 8°F January nights to 77°F July afternoons, with 46.3 inches of precipitation and 126 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.2°C, January lows of −13°C, July highs of 25°C, 1,176 mm of precipitation a year.
- NOAA stationWorcester (2 mi W)
- Station IDUSC00439988
- Location44.37°N 72.58°W
- Elevation1,360 ft (415 m)
- From the center2 miles
- Population (town)960
- Census place113
On October 22, the normal high in Worcester is 52°F and the normal low 36°F, and the chance of measurable rain or snow is 50%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Worcester.
- Jan 26° 8°
- Feb 29° 10°
- Mar 38° 19°
- Apr 51° 32°
- May 65° 44°
- Jun 72° 53°
- Jul 77° 58°
- Aug 75° 56°
- Sep 68° 48°
- Oct 54° 38°
- Nov 42° 28°
- Dec 31° 17°
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 Worcester each month?
July is the warmest month, with normal highs of 77°F; January the coldest, with normal lows of 8°F. The most precipitation falls in June (4.92 in), the least in February (2.82 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 26°F | 8°F | 17.1°F | 3.17 | 27.0 | 17 | <1 | 30 | 9 h 10 min |
| February | 29°F | 10°F | 19.7°F | 2.82 | 28.5 | 14 | <1 | 28 | 10 h 30 min |
| March | 38°F | 19°F | 28.2°F | 3.13 | 21.0 | 15 | <1 | 28 | 11 h 50 min |
| April | 51°F | 32°F | 41.4°F | 3.69 | 8.0 | 15 | <1 | 17 | 13 h 20 min |
| May | 65°F | 44°F | 54.3°F | 4.27 | 0.8 | 15 | <1 | 2 | 14 h 40 min |
| June | 72°F | 53°F | 62.8°F | 4.92 | 0.0 | 15 | <1 | <1 | 15 h 30 min |
| July | 77°F | 58°F | 67.3°F | 4.76 | 0.0 | 14 | 1 | <1 | 15 h 10 min |
| August | 75°F | 56°F | 65.3°F | 4.39 | 0.0 | 13 | <1 | <1 | 14 h 10 min |
| September | 68°F | 48°F | 57.8°F | 3.39 | 0.0 | 10 | <1 | 1 | 12 h 40 min |
| October | 54°F | 38°F | 45.9°F | 4.28 | 2.1 | 15 | <1 | 9 | 11 h |
| November | 42°F | 28°F | 34.5°F | 3.60 | 10.4 | 15 | <1 | 22 | 9 h 40 min |
| December | 31°F | 17°F | 23.9°F | 3.87 | 27.8 | 19 | <1 | 29 | 8 h 50 min |
| Year (annual) | 52°F | 34°F | 43.2°F | 46.29 | 125.6 | 177 | 1 | 165 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −3°C | −13°C | −8.3°C | 81 mm | 69 cm |
| February | −2°C | −12°C | −6.8°C | 72 mm | 72 cm |
| March | 3°C | −7°C | −2.1°C | 80 mm | 53 cm |
| April | 11°C | 0°C | 5.2°C | 94 mm | 20 cm |
| May | 18°C | 7°C | 12.4°C | 108 mm | 2 cm |
| June | 22°C | 12°C | 17.1°C | 125 mm | 0 cm |
| July | 25°C | 14°C | 19.6°C | 121 mm | 0 cm |
| August | 24°C | 13°C | 18.5°C | 112 mm | 0 cm |
| September | 20°C | 9°C | 14.3°C | 86 mm | 0 cm |
| October | 12°C | 3°C | 7.7°C | 109 mm | 5 cm |
| November | 5°C | −2°C | 1.4°C | 91 mm | 26 cm |
| December | −1°C | −8°C | −4.5°C | 98 mm | 71 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00439988; 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 Worcester?
Normal highs sit between 65°F and 85°F in 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 USC00439988.
When is the last frost in Worcester?
In Worcester, the last spring frost (32°F) comes after May 4 in half of years and after May 18 in one year in ten; the first autumn frost comes before October 5 in half of years and before September 21 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 41 year in 10 after May 18; 9 in 10 after April 23
- First autumn frost, half of years before
- October 51 year in 10 before September 21; 9 in 10 before October 20
NOAA puts the median frost-free season at 153 days, and the season without a hard freeze (28°F) at 178 days.
A hard freeze (28°F) comes after April 23 in half of springs and before October 19 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Worcester in zone 5a in ZIP code 05682, 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 USC00439988; 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 Worcester?
In a normal year in Worcester, 1 day a year reaches 90°F, 165 nights fall to 32°F or colder and 177 days bring measurable precipitation.
- Days at 90°F or more
- 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 165a normal year
- Days that stay below freezing
- 73high of 32°F or less
- Days with 0.01 inch of precipitation
- 177a normal year
- Days with 1 inch of snow or more
- 36a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00439988.
How sunny is Worcester?
Over a year 66% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Worcester, 3.5 kWh per square metre a day. August is the sunniest month (74%) and December the cloudiest (52%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 57% | 1.4 |
| February | 61% | 2.2 |
| March | 63% | 3.3 |
| April | 63% | 4.3 |
| May | 65% | 5.1 |
| June | 69% | 5.6 |
| July | 73% | 5.7 |
| August | 74% | 5.0 |
| September | 74% | 4.0 |
| October | 61% | 2.4 |
| November | 57% | 1.5 |
| December | 52% | 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 Worcester need?
A normal year in Worcester brings 8,186 heating degree days, 52% more than the median U.S. place (5,373), and 274 cooling degree days, 70% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,932 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,483 | 0 |
| February | 1,268 | 0 |
| March | 1,139 | 0 |
| April | 709 | 1 |
| May | 343 | 13 |
| June | 120 | 54 |
| July | 37 | 108 |
| August | 66 | 73 |
| September | 239 | 23 |
| October | 594 | 1 |
| November | 914 | 0 |
| December | 1,273 | 0 |
| Year (annual) | 8,186 | 274 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00439988. 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.
Has Worcester been warmer than normal lately?
2025 averaged 42.8°F, 0.4°F below the 1991-2020 normal of 43.2°F. 2 of the 3 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 44.9°F | +1.7°F | 38.66 | – |
| 2023 | 46.2°F | +3.0°F | – | – |
| 2025 | 42.8°F | −0.4°F | 45.68 | 136.7 |
Source: observed years: ACIS, station USC00439988. A year counts only with all twelve months complete.
How does Worcester's climate compare?
Worcester is warmer than 9 of the other 28 places with their own NOAA record in Vermont, and wetter than 19. Across the 7,247 U.S. stations with normals, its annual mean of 43.2°F is warmer than 13%.
In the Köppen classification computed from these normals, Worcester 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 Worcester 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.
- Waterbury, VT5,434 people · 9 mi W
- Waterbury Center, VT228 people · 7 mi W
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 Worcester's climate
What is the coldest month in Worcester?
January, with a normal high of 26°F and a normal low of 8°F. The warmest is July (77°F by day, 58°F at night).
Does it snow in Worcester?
Yes: 126 inches in a normal year, falling on 75 days with 0.1 inch or more, the most in February (28.5 inches).
What is the rainiest month in Worcester?
June, with 4.92 in of precipitation in a normal year; the driest is February with 2.82 in.
What plant hardiness zone is Worcester in?
The USDA's 2023 map puts Worcester in zone 5a in ZIP code 05682, the nearest ZIP area.
How late can frost come in Worcester?
In half of years the last 32°F night comes after May 4; in one year in ten it comes after May 18. Waiting until May 18 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Vermont climateThe statewide normals and every place in the state
- Montpelier, VT8 miles from this station, 45.0°F a year
- Plainfield, VT11 miles from this station, 41.3°F a year
- Morrisville, VT11 miles from this station, 42.5°F a year
- Barre, VT12 miles from this station, 42.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made