Waterville Valley Nepp, New Hampshire climate: Climate normals at a NOAA weather station
Waterville Valley Nepp's normal year runs from 6°F January nights to 77°F July afternoons, with 53.8 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 5.5°C, January lows of −15°C, July highs of 25°C, 1,367 mm of precipitation a year.
- NOAA stationWaterville Valley Nepp
- Station IDUSC00278961
- Location43.95°N 71.51°W
- Elevation1,429 ft (436 m)
On October 22, the normal high in Waterville Valley Nepp is 53°F and the normal low 32°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Waterville Valley Nepp.
- Jan 28° 6°
- Feb 30° 6°
- Mar 38° 15°
- Apr 50° 29°
- May 63° 40°
- Jun 72° 49°
- Jul 77° 54°
- Aug 76° 52°
- Sep 69° 45°
- Oct 56° 34°
- Nov 43° 25°
- Dec 33° 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 at Waterville Valley Nepp each month?
July is the warmest month, with normal highs of 77°F; January the coldest, with normal lows of 6°F. The most precipitation falls in October (5.62 in), the least in February (3.25 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 28°F | 6°F | 16.7°F | 3.91 | – | <1 | 30 | 9 h 10 min |
| February | 30°F | 6°F | 18.1°F | 3.25 | – | <1 | 28 | 10 h 30 min |
| March | 38°F | 15°F | 26.5°F | 4.30 | – | <1 | 30 | 11 h 50 min |
| April | 50°F | 29°F | 39.5°F | 4.64 | – | <1 | 22 | 13 h 20 min |
| May | 63°F | 40°F | 51.4°F | 4.16 | – | <1 | 7 | 14 h 40 min |
| June | 72°F | 49°F | 60.6°F | 5.16 | – | <1 | 1 | 15 h 30 min |
| July | 77°F | 54°F | 65.6°F | 4.79 | – | 1 | <1 | 15 h 10 min |
| August | 76°F | 52°F | 64.0°F | 4.35 | – | <1 | <1 | 14 h |
| September | 69°F | 45°F | 57.0°F | 4.18 | – | <1 | 2 | 12 h 40 min |
| October | 56°F | 34°F | 45.1°F | 5.62 | – | <1 | 12 | 11 h 10 min |
| November | 43°F | 25°F | 34.2°F | 4.48 | – | <1 | 26 | 9 h 40 min |
| December | 33°F | 14°F | 23.8°F | 4.98 | – | <1 | 30 | 9 h |
| Year (annual) | 53°F | 31°F | 41.9°F | 53.82 | – | 1 | 188 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −2°C | −15°C | −8.5°C | 99 mm |
| February | −1°C | −14°C | −7.7°C | 83 mm |
| March | 3°C | −9°C | −3.1°C | 109 mm |
| April | 10°C | −2°C | 4.2°C | 118 mm |
| May | 17°C | 4°C | 10.8°C | 106 mm |
| June | 22°C | 10°C | 15.9°C | 131 mm |
| July | 25°C | 12°C | 18.7°C | 122 mm |
| August | 24°C | 11°C | 17.8°C | 110 mm |
| September | 21°C | 7°C | 13.9°C | 106 mm |
| October | 13°C | 1°C | 7.3°C | 143 mm |
| November | 6°C | −4°C | 1.2°C | 114 mm |
| December | 1°C | −10°C | −4.6°C | 126 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Plymouth (13 miles away), gets 68 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00278961; 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 Waterville Valley Nepp?
Normal highs sit between 65°F and 85°F in June, July, August and September.
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 USC00278961.
When is the last frost at Waterville Valley Nepp?
In Waterville Valley Nepp, the last spring frost (32°F) comes after May 15 in half of years and after May 29 in one year in ten; the first autumn frost comes before September 28 in half of years and before September 13 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 151 year in 10 after May 29; 9 in 10 after May 3
- First autumn frost, half of years before
- September 281 year in 10 before September 13; 9 in 10 before October 11
NOAA puts the median frost-free season at 134 days, and the season without a hard freeze (28°F) at 158 days.
A hard freeze (28°F) comes after May 2 in half of springs and before October 9 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Waterville Valley Nepp in zone 5a in ZIP code 03259, the nearest ZIP area.
Frost dates for every NOAA station in New Hampshire · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00278961; 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 at Waterville Valley Nepp?
In a normal year in Waterville Valley Nepp, 1 day a year reaches 90°F and 188 nights fall to 32°F or colder.
- 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
- 188a normal year
- Days that stay below freezing
- 66high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00278961.
How sunny is it at Waterville Valley Nepp?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds at Waterville Valley Nepp, 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 Waterville Valley Nepp record?
A normal year at Waterville Valley Nepp brings 8,558 heating degree days, 59% more than the median U.S. place (5,373), and 160 cooling degree days, 82% 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 1,634 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,497 | 0 |
| February | 1,313 | 0 |
| March | 1,193 | 0 |
| April | 767 | 0 |
| May | 428 | 5 |
| June | 159 | 25 |
| July | 48 | 68 |
| August | 79 | 46 |
| September | 255 | 15 |
| October | 619 | 1 |
| November | 924 | 0 |
| December | 1,276 | 0 |
| Year (annual) | 8,558 | 160 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00278961. 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 Waterville Valley Nepp been warmer than normal?
2022 averaged 43.4°F, 1.5°F above the 1991-2020 normal of 41.9°F. 2 of the 2 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 44.0°F | +2.1°F | 50.91 |
| 2022 | 43.4°F | +1.5°F | 54.55 |
Source: observed years: ACIS, station USC00278961. A year counts only with all twelve months complete.
How does Waterville Valley Nepp's climate compare?
Waterville Valley Nepp is warmer than 2 of the 28 places with their own NOAA record in New Hampshire, and wetter than 28. Across the 7,247 U.S. stations with normals, its annual mean of 41.9°F is warmer than 9%.
In the Köppen classification computed from these normals, Waterville Valley Nepp 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.
Questions about Waterville Valley Nepp's climate
What is the coldest month at Waterville Valley Nepp?
January, with a normal high of 28°F and a normal low of 6°F. The warmest is July (77°F by day, 54°F at night).
Does it snow at Waterville Valley Nepp?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Plymouth (13 miles away), records 68 inches of snow in a normal year.
What is the rainiest month at Waterville Valley Nepp?
October, with 5.62 in of precipitation in a normal year; the driest is February with 3.25 in.
What plant hardiness zone is Waterville Valley Nepp in?
The USDA's 2023 map puts Waterville Valley Nepp in zone 5a in ZIP code 03259, the nearest ZIP area.
How late can frost come at Waterville Valley Nepp?
In half of years the last 32°F night comes after May 15; in one year in ten it comes after May 29. Waiting until May 29 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
- Lincoln, NH11 miles from this station, 44.0°F a year
- East Sandwich, NH12 miles from this station, 44.9°F a year
- Plymouth, NH13 miles from this station, 43.4°F a year
- Tamworth 4, NH14 miles from this station, 43.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made