Tamworth 4, New Hampshire climate: Climate normals at a NOAA weather station
Tamworth 4's normal year runs from 8°F January nights to 78°F July afternoons, with 52.4 inches of precipitation and 83 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.1°C, January lows of −13°C, July highs of 26°C, 1,330 mm of precipitation a year.
- NOAA stationTamworth 4
- Station IDUSC00278614
- Location43.86°N 71.27°W
- Elevation541 ft (165 m)
On October 22, the normal high in Tamworth 4 is 54°F and the normal low 32°F, and the chance of measurable rain or snow is 44%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Tamworth 4.
- Jan 29° 8°
- Feb 32° 8°
- Mar 40° 17°
- Apr 53° 29°
- May 66° 40°
- Jun 74° 50°
- Jul 78° 55°
- Aug 77° 53°
- Sep 70° 44°
- Oct 57° 34°
- Nov 45° 25°
- Dec 34° 15°
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 Tamworth 4 each month?
July is the warmest month, with normal highs of 78°F; January the coldest, with normal lows of 8°F. The most precipitation falls in October (5.71 in), the least in February (3.33 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 29°F | 8°F | 18.4°F | 3.67 | 18.4 | 11 | <1 | 31 | 9 h 10 min |
| February | 32°F | 8°F | 20.2°F | 3.33 | 22.4 | 9 | <1 | 28 | 10 h 30 min |
| March | 40°F | 17°F | 28.7°F | 3.99 | 14.0 | 11 | <1 | 30 | 11 h 50 min |
| April | 53°F | 29°F | 41.0°F | 4.63 | 4.2 | 11 | <1 | 22 | 13 h 20 min |
| May | 66°F | 40°F | 52.9°F | 3.76 | 0.0 | 13 | <1 | 4 | 14 h 40 min |
| June | 74°F | 50°F | 61.5°F | 4.64 | 0.0 | 14 | 1 | <1 | 15 h 30 min |
| July | 78°F | 55°F | 66.5°F | 4.83 | 0.0 | 12 | 1 | <1 | 15 h 10 min |
| August | 77°F | 53°F | 64.7°F | 4.03 | 0.0 | 11 | 1 | <1 | 14 h |
| September | 70°F | 44°F | 56.8°F | 4.33 | 0.0 | 10 | <1 | 2 | 12 h 40 min |
| October | 57°F | 34°F | 45.2°F | 5.71 | 0.6 | 14 | <1 | 13 | 11 h 10 min |
| November | 45°F | 25°F | 34.8°F | 4.59 | 5.1 | 12 | <1 | 25 | 9 h 40 min |
| December | 34°F | 15°F | 24.8°F | 4.86 | 18.3 | 13 | <1 | 30 | 9 h |
| Year (annual) | 55°F | 31°F | 43.0°F | 52.37 | 83.0 | 142 | 4 | 185 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −2°C | −13°C | −7.6°C | 93 mm | 47 cm |
| February | 0°C | −13°C | −6.6°C | 85 mm | 57 cm |
| March | 5°C | −8°C | −1.8°C | 101 mm | 36 cm |
| April | 12°C | −2°C | 5.0°C | 118 mm | 11 cm |
| May | 19°C | 5°C | 11.6°C | 96 mm | 0 cm |
| June | 23°C | 10°C | 16.4°C | 118 mm | 0 cm |
| July | 26°C | 13°C | 19.2°C | 123 mm | 0 cm |
| August | 25°C | 11°C | 18.2°C | 102 mm | 0 cm |
| September | 21°C | 7°C | 13.8°C | 110 mm | 0 cm |
| October | 14°C | 1°C | 7.3°C | 145 mm | 2 cm |
| November | 7°C | −4°C | 1.6°C | 117 mm | 13 cm |
| December | 1°C | −9°C | −4.0°C | 123 mm | 46 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00278614; 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 Tamworth 4?
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 USC00278614.
When is the last frost at Tamworth 4?
In Tamworth 4, the last spring frost (32°F) comes after May 16 in half of years and after May 30 in one year in ten; the first autumn frost comes before September 26 in half of years and before September 10 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 161 year in 10 after May 30; 9 in 10 after May 3
- First autumn frost, half of years before
- September 261 year in 10 before September 10; 9 in 10 before October 7
NOAA puts the median frost-free season at 129 days, and the season without a hard freeze (28°F) at 151 days.
A hard freeze (28°F) comes after May 4 in half of springs and before October 4 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Tamworth 4 in zone 5a in ZIP code 03886, 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 5a: the coldest night of a typical year reaches −15°F (20 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 USC00278614; 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 Tamworth 4?
In a normal year in Tamworth 4, 4 days a year reach 90°F, 185 nights fall to 32°F or colder and 142 days bring measurable precipitation.
- Days at 90°F or more
- 4a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 185a normal year
- Days that stay below freezing
- 55high of 32°F or less
- Days with 0.01 inch of precipitation
- 142a normal year
- Days with 1 inch of snow or more
- 20a normal year
The highest temperature in this station's record (since 2000) is 97°F, on August 15, 2002; the lowest is −22°F, on January 24, 2011.
The wettest calendar year on that record is 2008, with 67.50 in; the snowiest season is 2007–08, with 121.3 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00278614; records: ACIS (NOAA Regional Climate Centers), station USC00278614. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Tamworth 4?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds at Tamworth 4, 3.7 kWh per square metre a day. August is the sunniest month (77%) and December the cloudiest (62%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 66% | 1.7 |
| February | 68% | 2.5 |
| March | 68% | 3.6 |
| April | 68% | 4.6 |
| May | 67% | 5.2 |
| June | 70% | 5.6 |
| July | 76% | 5.8 |
| August | 77% | 5.2 |
| September | 77% | 4.2 |
| October | 66% | 2.7 |
| November | 66% | 1.8 |
| December | 62% | 1.3 |
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 Tamworth 4 record?
A normal year at Tamworth 4 brings 8,211 heating degree days, 53% more than the median U.S. place (5,373), and 214 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 1,758 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,444 | 0 |
| February | 1,256 | 0 |
| March | 1,125 | 0 |
| April | 721 | 1 |
| May | 381 | 7 |
| June | 143 | 39 |
| July | 43 | 90 |
| August | 70 | 61 |
| September | 261 | 15 |
| October | 614 | 0 |
| November | 905 | 0 |
| December | 1,248 | 0 |
| Year (annual) | 8,211 | 214 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00278614. 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 Tamworth 4 been warmer than normal?
2025 averaged 44.3°F, 1.3°F above the 1991-2020 normal of 43.0°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 44.8°F | +1.8°F | 44.06 | 51.2 |
| 2022 | 45.4°F | +2.4°F | 52.78 | 62.5 |
| 2023 | 46.7°F | +3.7°F | 62.24 | 91.6 |
| 2024 | 46.9°F | +3.9°F | 54.86 | 101.4 |
| 2025 | 44.3°F | +1.3°F | 42.90 | 80.9 |
Source: observed years: ACIS, station USC00278614. A year counts only with all twelve months complete.
How does Tamworth 4's climate compare?
Tamworth 4 is warmer than 6 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 43.0°F is warmer than 12%.
In the Köppen classification computed from these normals, Tamworth 4 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 Tamworth 4 share this climate record?
Center Ossipee has no NOAA station with 1991-2020 normals of its 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.
- Center Ossipee, NH500 people · 10 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 Tamworth 4's climate
What is the coldest month at Tamworth 4?
January, with a normal high of 29°F and a normal low of 8°F. The warmest is July (78°F by day, 55°F at night).
Does it snow at Tamworth 4?
Yes: 83 inches in a normal year, falling on 38 days with 0.1 inch or more, the most in February (22.4 inches).
What is the rainiest month at Tamworth 4?
October, with 5.71 in of precipitation in a normal year; the driest is February with 3.33 in.
What plant hardiness zone is Tamworth 4 in?
The USDA's 2023 map puts Tamworth 4 in zone 5a in ZIP code 03886, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −15°F (20 years, 1991-2020): zone 5a.
How late can frost come at Tamworth 4?
In half of years the last 32°F night comes after May 16; in one year in ten it comes after May 30. Waiting until May 30 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
- East Sandwich, NH6 miles from this station, 44.9°F a year
- Waterville Valley Nepp, NH14 miles from this station, 41.9°F a year
- North Conway, NH15 miles from this station, 45.4°F a year
- Meredith, NH16 miles from this station, 46.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made