Island Pond, Vermont climate: Normal weather by month, frost dates and records
Island Pond's normal year runs from 3°F January nights to 76°F July afternoons, with 44.9 inches of precipitation and 115 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 5.1°C, January lows of −16°C, July highs of 25°C, 1,140 mm of precipitation a year.
- NOAA stationIsland Pond
- Station IDUSC00434120
- Location44.81°N 71.89°W
- Elevation1,200 ft (366 m)
- Population (census place)698
On October 23, the normal high in Island Pond is 51°F and the normal low 34°F, and the chance of measurable rain or snow is 54%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Island Pond.
- Jan 24° 3°
- Feb 27° 4°
- Mar 36° 14°
- Apr 49° 29°
- May 64° 41°
- Jun 72° 51°
- Jul 76° 55°
- Aug 75° 54°
- Sep 68° 46°
- Oct 54° 36°
- Nov 41° 26°
- Dec 30° 14°
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 Island Pond each month?
July is the warmest month, with normal highs of 76°F; January the coldest, with normal lows of 3°F. The most precipitation falls in July (4.89 in), the least in February (2.27 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 24°F | 3°F | 13.5°F | 2.83 | 25.3 | 17 | <1 | 30 | 9 h 10 min |
| February | 27°F | 4°F | 15.3°F | 2.27 | 26.1 | 14 | <1 | 28 | 10 h 20 min |
| March | 36°F | 14°F | 24.9°F | 2.91 | 22.1 | 14 | <1 | 29 | 11 h 50 min |
| April | 49°F | 29°F | 39.2°F | 3.35 | 5.7 | 14 | <1 | 21 | 13 h 30 min |
| May | 64°F | 41°F | 52.2°F | 4.12 | 0.4 | 16 | <1 | 7 | 14 h 50 min |
| June | 72°F | 51°F | 61.3°F | 4.76 | 0.0 | 17 | <1 | <1 | 15 h 30 min |
| July | 76°F | 55°F | 65.8°F | 4.89 | 0.0 | 17 | <1 | <1 | 15 h 20 min |
| August | 75°F | 54°F | 64.2°F | 4.51 | 0.0 | 16 | <1 | <1 | 14 h 10 min |
| September | 68°F | 46°F | 56.9°F | 4.06 | 0.0 | 15 | <1 | 3 | 12 h 40 min |
| October | 54°F | 36°F | 45.1°F | 4.52 | 1.4 | 17 | <1 | 13 | 11 h |
| November | 41°F | 26°F | 33.6°F | 3.44 | 8.8 | 17 | <1 | 23 | 9 h 40 min |
| December | 30°F | 14°F | 21.6°F | 3.23 | 25.1 | 19 | <1 | 29 | 8 h 50 min |
| Year (annual) | 51°F | 31°F | 41.1°F | 44.89 | 114.9 | 193 | 1 | 184 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −5°C | −16°C | −10.3°C | 72 mm | 64 cm |
| February | −3°C | −16°C | −9.3°C | 58 mm | 66 cm |
| March | 2°C | −10°C | −3.9°C | 74 mm | 56 cm |
| April | 10°C | −2°C | 4.0°C | 85 mm | 14 cm |
| May | 18°C | 5°C | 11.2°C | 105 mm | 1 cm |
| June | 22°C | 10°C | 16.3°C | 121 mm | 0 cm |
| July | 25°C | 13°C | 18.8°C | 124 mm | 0 cm |
| August | 24°C | 12°C | 17.9°C | 115 mm | 0 cm |
| September | 20°C | 8°C | 13.8°C | 103 mm | 0 cm |
| October | 12°C | 2°C | 7.3°C | 115 mm | 4 cm |
| November | 5°C | −3°C | 0.9°C | 87 mm | 22 cm |
| December | −1°C | −10°C | −5.8°C | 82 mm | 64 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00434120; 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 Island Pond?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, September has the fewest days with rain (15).
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 USC00434120.
When is the last frost in Island Pond?
In Island Pond, the last spring frost (32°F) comes after May 19 in half of years and after June 3 in one year in ten; the first autumn frost comes before September 29 in half of years and before September 14 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 191 year in 10 after June 3; 9 in 10 after May 3
- First autumn frost, half of years before
- September 291 year in 10 before September 14; 9 in 10 before October 13
NOAA puts the median frost-free season at 129 days, and the season without a hard freeze (28°F) at 155 days.
A hard freeze (28°F) comes after May 5 in half of springs and before October 9 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Island Pond in zone 4a in ZIP code 05846, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Island Pond's NOAA station is in zone 4a: the coldest night of a typical year reaches −29°F (25 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 USC00434120; 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 Island Pond?
In a normal year in Island Pond, 1 day a year reaches 90°F, 184 nights fall to 32°F or colder and 193 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
- 184a normal year
- Days that stay below freezing
- 81high of 32°F or less
- Days with 0.01 inch of precipitation
- 193a normal year
- Days with 1 inch of snow or more
- 36a normal year
The highest temperature in this station's record (since 1990) is 92°F, on July 2, 2026; the lowest is −43°F, on February 7, 1993.
The wettest calendar year on that record is 2024, with 54.92 in; the snowiest season is 1992–93, with 170.2 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00434120; records: ACIS (NOAA Regional Climate Centers), station USC00434120. Records use complete months only; a month missing more than three days is left out.
How sunny is Island Pond?
Over a year 66% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Island Pond, 3.5 kWh per square metre a day. September is the sunniest month (73%) and December the cloudiest (54%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 59% | 1.4 |
| February | 62% | 2.3 |
| March | 65% | 3.5 |
| April | 64% | 4.4 |
| May | 64% | 5.1 |
| June | 67% | 5.5 |
| July | 71% | 5.6 |
| August | 73% | 5.0 |
| September | 73% | 4.0 |
| October | 62% | 2.4 |
| November | 59% | 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 Island Pond need?
A normal year in Island Pond brings 8,880 heating degree days, 65% more than the median U.S. place (5,373), and 217 cooling degree days, 76% 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 1,732 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,598 | 0 |
| February | 1,392 | 0 |
| March | 1,243 | 0 |
| April | 776 | 1 |
| May | 405 | 8 |
| June | 153 | 42 |
| July | 58 | 85 |
| August | 85 | 61 |
| September | 262 | 20 |
| October | 619 | 1 |
| November | 944 | 0 |
| December | 1,345 | 0 |
| Year (annual) | 8,880 | 217 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00434120. 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 Island Pond been warmer than normal lately?
2025 averaged 40.5°F, 0.6°F below the 1991-2020 normal of 41.1°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 42.2°F | +1.1°F | 37.18 | 84.2 |
| 2022 | 41.6°F | +0.5°F | 42.38 | 67.5 |
| 2023 | 43.2°F | +2.1°F | 48.71 | 84.2 |
| 2024 | 43.8°F | +2.7°F | 54.92 | 79.6 |
| 2025 | 40.5°F | −0.6°F | 34.42 | 89.8 |
Source: observed years: ACIS, station USC00434120. A year counts only with all twelve months complete.
How does Island Pond's climate compare?
Island Pond is warmer than 0 of the other 28 places with their own NOAA record in Vermont, and wetter than 18. Across the 7,247 U.S. stations with normals, its annual mean of 41.1°F is warmer than 8%.
In the Köppen classification computed from these normals, Island Pond 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.
What do Island Pond's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Island Pond. This page uses Island Pond; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Island Pond Airport USC00434122 | 3 mi SE | 1,194 ft | 39.6°F | −1°F | 77°F | – | – | May 16 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Island Pond's climate
What is the coldest month in Island Pond?
January, with a normal high of 24°F and a normal low of 3°F. The warmest is July (76°F by day, 55°F at night).
Does it snow in Island Pond?
Yes: 115 inches in a normal year, falling on 64 days with 0.1 inch or more, the most in February (26.1 inches).
What is the rainiest month in Island Pond?
July, with 4.89 in of precipitation in a normal year; the driest is February with 2.27 in.
What plant hardiness zone is Island Pond in?
The USDA's 2023 map puts Island Pond in zone 4a in ZIP code 05846, the nearest ZIP area. By the same method at Island Pond's NOAA station, the coldest night of a typical year reaches −29°F (25 years, 1991-2020): zone 4a.
How late can frost come in Island Pond?
In half of years the last 32°F night comes after May 19; in one year in ten it comes after June 3. Waiting until June 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Vermont climateThe statewide normals and every place in the state
- East Haven, VT12 miles from this station, 39.6°F a year
- Sutton, VT16 miles from this station, 41.1°F a year
- Averill, VT17 miles from this station, 39.1°F a year
- North Stratford, NH17 miles from this station, 41.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made