Greenland, New Hampshire climate: Climate normals at a NOAA weather station
Greenland's normal year runs from 16°F January nights to 81°F July afternoons, with 50.6 inches of precipitation and 65 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.7°C, January lows of −9°C, July highs of 27°C, 1,287 mm of precipitation a year.
- NOAA stationGreenland
- Station IDUSC00273626
- Location43.02°N 70.83°W
- Elevation95 ft (29 m)
On October 22, the normal high in Greenland is 57°F and the normal low 38°F, and the chance of measurable rain or snow is 35%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Greenland.
- Jan 33° 16°
- Feb 36° 18°
- Mar 43° 25°
- Apr 56° 35°
- May 66° 45°
- Jun 75° 54°
- Jul 81° 60°
- Aug 79° 59°
- Sep 72° 52°
- Oct 60° 41°
- Nov 48° 31°
- Dec 38° 22°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Greenland each month?
July is the warmest month, with normal highs of 81°F; January the coldest, with normal lows of 16°F. The most precipitation falls in October (4.95 in), the least in February (3.57 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 33°F | 16°F | 24.4°F | 3.63 | 17.1 | 11 | <1 | 29 | 9 h 20 min |
| February | 36°F | 18°F | 26.6°F | 3.57 | 15.8 | 9 | <1 | 26 | 10 h 30 min |
| March | 43°F | 25°F | 34.3°F | 4.77 | 13.9 | 11 | <1 | 24 | 11 h 50 min |
| April | 56°F | 35°F | 45.3°F | 4.56 | 2.3 | 11 | <1 | 12 | 13 h 20 min |
| May | 66°F | 45°F | 55.4°F | 3.95 | 0.0 | 11 | 1 | 2 | 14 h 40 min |
| June | 75°F | 54°F | 64.5°F | 4.59 | 0.0 | 11 | 2 | <1 | 15 h 20 min |
| July | 81°F | 60°F | 70.3°F | 3.89 | 0.0 | 11 | 4 | <1 | 15 h |
| August | 79°F | 59°F | 69.1°F | 3.66 | 0.0 | 9 | 3 | <1 | 14 h |
| September | 72°F | 52°F | 61.7°F | 4.08 | 0.0 | 9 | 1 | <1 | 12 h 30 min |
| October | 60°F | 41°F | 50.1°F | 4.95 | 0.1 | 11 | <1 | 6 | 11 h 10 min |
| November | 48°F | 31°F | 39.7°F | 4.12 | 1.6 | 11 | <1 | 18 | 9 h 50 min |
| December | 38°F | 22°F | 30.0°F | 4.88 | 14.2 | 11 | <1 | 27 | 9 h |
| Year (annual) | 57°F | 38°F | 47.6°F | 50.65 | 65.0 | 126 | 11 | 143 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −9°C | −4.2°C | 92 mm | 43 cm |
| February | 2°C | −8°C | −3.0°C | 91 mm | 40 cm |
| March | 6°C | −4°C | 1.3°C | 121 mm | 35 cm |
| April | 13°C | 2°C | 7.4°C | 116 mm | 6 cm |
| May | 19°C | 7°C | 13.0°C | 100 mm | 0 cm |
| June | 24°C | 12°C | 18.1°C | 117 mm | 0 cm |
| July | 27°C | 16°C | 21.3°C | 99 mm | 0 cm |
| August | 26°C | 15°C | 20.6°C | 93 mm | 0 cm |
| September | 22°C | 11°C | 16.5°C | 104 mm | 0 cm |
| October | 15°C | 5°C | 10.1°C | 126 mm | 0 cm |
| November | 9°C | 0°C | 4.3°C | 105 mm | 4 cm |
| December | 3°C | −5°C | −1.1°C | 124 mm | 36 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00273626; 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.
Which months are mildest at Greenland?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, August has the fewest days with rain (9).
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 USC00273626.
When is the last frost at Greenland?
In Greenland, 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 8 in half of years and before September 27 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 81 year in 10 before September 27; 9 in 10 before October 24
NOAA puts the median frost-free season at 157 days, and the season without a hard freeze (28°F) at 180 days.
A hard freeze (28°F) comes after April 23 in half of springs and before October 21 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Greenland in zone 6a in ZIP code 03840, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 6a: the coldest night of a typical year reaches −7°F (26 complete years).
Frost dates for every NOAA station in New Hampshire · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00273626; 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 at Greenland?
In a normal year in Greenland, 11 days a year reach 90°F, 143 nights fall to 32°F or colder and 126 days bring measurable precipitation.
- Days at 90°F or more
- 11a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 143a normal year
- Days that stay below freezing
- 34high of 32°F or less
- Days with 0.01 inch of precipitation
- 126a normal year
- Days with 1 inch of snow or more
- 18a normal year
The highest temperature in this station's record (since 1973) is 104°F, on August 2, 1975; the lowest is −26°F, on January 22, 1984.
The wettest calendar year on that record is 2006, with 74.64 in; the snowiest season is 1995–96, with 110.1 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00273626; records: ACIS (NOAA Regional Climate Centers), station USC00273626. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Greenland?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds at Greenland, 3.8 kWh per square metre a day. August is the sunniest month (79%) and December the cloudiest (64%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 67% | 1.7 |
| February | 69% | 2.5 |
| March | 69% | 3.6 |
| April | 70% | 4.7 |
| May | 69% | 5.3 |
| June | 70% | 5.6 |
| July | 77% | 5.9 |
| August | 79% | 5.3 |
| September | 78% | 4.3 |
| October | 70% | 2.8 |
| November | 68% | 1.8 |
| December | 64% | 1.4 |
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 many heating and cooling degree days does Greenland record?
A normal year at Greenland brings 6,775 heating degree days, 26% more than the median U.S. place (5,373), and 478 cooling degree days, 47% 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 2,385 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,257 | 0 |
| February | 1,075 | 0 |
| March | 952 | 0 |
| April | 593 | 2 |
| May | 312 | 16 |
| June | 93 | 79 |
| July | 14 | 179 |
| August | 21 | 148 |
| September | 148 | 51 |
| October | 465 | 3 |
| November | 761 | 0 |
| December | 1,083 | 0 |
| Year (annual) | 6,775 | 478 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00273626. 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.
Have recent years at Greenland been warmer than normal?
2024 averaged 50.0°F, 2.4°F above the 1991-2020 normal of 47.6°F. 4 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 49.8°F | +2.2°F | 55.14 | 27.7 |
| 2022 | 49.2°F | +1.6°F | 47.02 | 32.6 |
| 2023 | 50.0°F | +2.4°F | 64.72 | 37.4 |
| 2024 | 50.0°F | +2.4°F | 48.83 | 30.1 |
Over 40 complete years from 1977 to 2024, the station's annual mean temperature rose at a fitted 8.0°F per century (+0.45°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00273626; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Greenland's climate compare?
Greenland is warmer than 22 of the 28 places with their own NOAA record in New Hampshire, and wetter than 27. Across the 7,247 U.S. stations with normals, its annual mean of 47.6°F is warmer than 30%.
In the Köppen classification computed from these normals, Greenland 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 Greenland share this climate record?
9 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.
- Portsmouth, NH22,938 people · 4 mi NE
- Newburyport, MA19,163 people · 15 mi S
- Exeter, NH16,205 people · 7 mi SW
- Hampton, NH16,448 people · 5 mi S
- Salisbury, MA9,415 people · 13 mi S
- Kittery, ME11,064 people · 6 mi NE
- York Harbor, ME3,853 people · 12 mi NE
- Kittery Point, ME1,008 people · 8 mi NE
- Newfields, NH1,781 people · 6 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 Greenland's climate
What is the coldest month at Greenland?
January, with a normal high of 33°F and a normal low of 16°F. The warmest is July (81°F by day, 60°F at night).
Does it snow at Greenland?
Yes: 65 inches in a normal year, falling on 25 days with 0.1 inch or more, the most in January (17.1 inches).
What is the rainiest month at Greenland?
October, with 4.95 in of precipitation in a normal year; the driest is February with 3.57 in.
What plant hardiness zone is Greenland in?
The USDA's 2023 map puts Greenland in zone 6a in ZIP code 03840, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −7°F (26 years, 1991-2020): zone 6a.
How late can frost come at Greenland?
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
- New Hampshire climateThe statewide normals and every place in the state
- Durham, NH12 miles from this station, 47.1°F a year
- Epping, NH13 miles from this station, 47.4°F a year
- Cape Neddick, ME17 miles from this station, 46.9°F a year
- Rochester, NH19 miles from this station, 47.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made