Milford, New Hampshire climate: Normal weather by month, frost dates and records
Milford's normal year runs from 14°F January nights to 83°F July afternoons, with 46.0 inches of precipitation and 57 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.7°C, January lows of −10°C, July highs of 29°C, 1,169 mm of precipitation a year.
- NOAA stationMilford
- Station IDUSC00275412
- Location42.84°N 71.65°W
- Elevation320 ft (98 m)
- From the center2 miles
- Population (town)16,530
- Census place8,857
On October 23, the normal high in Milford is 58°F and the normal low 35°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 Milford.
- Jan 33° 14°
- Feb 36° 15°
- Mar 45° 24°
- Apr 58° 34°
- May 69° 45°
- Jun 78° 55°
- Jul 83° 60°
- Aug 81° 58°
- Sep 73° 50°
- Oct 60° 38°
- Nov 49° 28°
- Dec 38° 20°
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 Milford each month?
July is the warmest month, with normal highs of 83°F; January the coldest, with normal lows of 14°F. The most precipitation falls in October (4.88 in), the least in February (2.99 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 33°F | 14°F | 23.7°F | 3.03 | 15.4 | 11 | <1 | 30 | 9 h 20 min |
| February | 36°F | 15°F | 25.6°F | 2.99 | 11.5 | 9 | <1 | 27 | 10 h 30 min |
| March | 45°F | 24°F | 34.0°F | 3.79 | 14.4 | 11 | <1 | 27 | 11 h 50 min |
| April | 58°F | 34°F | 46.3°F | 4.15 | 2.3 | 12 | <1 | 14 | 13 h 20 min |
| May | 69°F | 45°F | 57.0°F | 3.35 | 0.0 | 14 | 1 | 2 | 14 h 40 min |
| June | 78°F | 55°F | 66.1°F | 4.03 | 0.0 | 12 | 3 | <1 | 15 h 20 min |
| July | 83°F | 60°F | 71.8°F | 3.73 | 0.0 | 11 | 4 | <1 | 15 h |
| August | 81°F | 58°F | 69.4°F | 3.68 | 0.0 | 11 | 3 | <1 | 14 h |
| September | 73°F | 50°F | 61.3°F | 4.04 | 0.0 | 11 | 1 | 1 | 12 h 30 min |
| October | 60°F | 38°F | 49.0°F | 4.88 | 0.1 | 10 | <1 | 10 | 11 h 10 min |
| November | 49°F | 28°F | 38.6°F | 3.92 | 1.1 | 11 | <1 | 20 | 9 h 50 min |
| December | 38°F | 20°F | 29.1°F | 4.45 | 12.6 | 11 | <1 | 28 | 9 h |
| Year (annual) | 59°F | 37°F | 47.7°F | 46.04 | 57.4 | 134 | 11 | 159 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 1°C | −10°C | −4.6°C | 77 mm | 39 cm |
| February | 2°C | −9°C | −3.6°C | 76 mm | 29 cm |
| March | 7°C | −5°C | 1.1°C | 96 mm | 37 cm |
| April | 15°C | 1°C | 7.9°C | 105 mm | 6 cm |
| May | 21°C | 7°C | 13.9°C | 85 mm | 0 cm |
| June | 25°C | 13°C | 18.9°C | 102 mm | 0 cm |
| July | 29°C | 16°C | 22.1°C | 95 mm | 0 cm |
| August | 27°C | 14°C | 20.8°C | 93 mm | 0 cm |
| September | 23°C | 10°C | 16.3°C | 103 mm | 0 cm |
| October | 16°C | 3°C | 9.4°C | 124 mm | 0 cm |
| November | 9°C | −2°C | 3.7°C | 100 mm | 3 cm |
| December | 3°C | −7°C | −1.6°C | 113 mm | 32 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00275412; 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 Milford?
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 (11).
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 USC00275412.
When is the last frost in Milford?
In Milford, the last spring frost (32°F) comes after May 3 in half of years and after May 15 in one year in ten; the first autumn frost comes before October 5 in half of years and before September 25 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 31 year in 10 after May 15; 9 in 10 after April 22
- First autumn frost, half of years before
- October 51 year in 10 before September 25; 9 in 10 before October 18
NOAA puts the median frost-free season at 156 days, and the season without a hard freeze (28°F) at 179 days.
A hard freeze (28°F) comes after April 20 in half of springs and before October 16 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Milford in zone 6a in ZIP code 03055.
Frost dates for every NOAA station in New Hampshire · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00275412; 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 Milford?
In a normal year in Milford, 11 days a year reach 90°F, 159 nights fall to 32°F or colder and 134 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
- 159a normal year
- Days that stay below freezing
- 37high of 32°F or less
- Days with 0.01 inch of precipitation
- 134a normal year
- Days with 1 inch of snow or more
- 16a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00275412.
How sunny is Milford?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Milford, 3.8 kWh per square metre a day. August is the sunniest month (78%) and December the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 1.8 |
| February | 70% | 2.7 |
| March | 69% | 3.7 |
| April | 69% | 4.7 |
| May | 68% | 5.3 |
| June | 71% | 5.7 |
| July | 78% | 6.0 |
| August | 78% | 5.3 |
| September | 77% | 4.3 |
| October | 68% | 2.8 |
| November | 70% | 2.0 |
| December | 66% | 1.5 |
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 Milford need?
A normal year in Milford brings 6,825 heating degree days, 27% more than the median U.S. place (5,373), and 546 cooling degree days, 40% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,495 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,279 | 0 |
| February | 1,105 | 0 |
| March | 960 | 0 |
| April | 564 | 3 |
| May | 266 | 20 |
| June | 71 | 105 |
| July | 8 | 217 |
| August | 20 | 157 |
| September | 151 | 42 |
| October | 497 | 3 |
| November | 791 | 0 |
| December | 1,114 | 0 |
| Year (annual) | 6,825 | 546 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00275412. 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.
How does Milford's climate compare?
Milford is warmer than 22 of the other 27 places with their own NOAA record in New Hampshire, and wetter than 15. Across the 7,247 U.S. stations with normals, its annual mean of 47.7°F is warmer than 31%.
In the Köppen classification computed from these normals, Milford is Dfa: continental, no dry season, hot 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 Milford share this climate record?
3 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.
- Wilton, NH3,985 people · 4 mi W
- Klondike Corner, NH800 people · 8 mi N
- Amherst, NH11,914 people · 2 mi NE
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 Milford's climate
What is the coldest month in Milford?
January, with a normal high of 33°F and a normal low of 14°F. The warmest is July (83°F by day, 60°F at night).
Does it snow in Milford?
Yes: 57 inches in a normal year, falling on 26 days with 0.1 inch or more, the most in January (15.4 inches).
What is the rainiest month in Milford?
October, with 4.88 in of precipitation in a normal year; the driest is February with 2.99 in.
What plant hardiness zone is Milford in?
The USDA's 2023 map puts Milford in zone 6a in ZIP code 03055.
How late can frost come in Milford?
In half of years the last 32°F night comes after May 3; in one year in ten it comes after May 15. Waiting until May 15 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 Milford, NH1 miles from this station, 47.8°F a year
- Greenville, NH9 miles from this station, 45.7°F a year
- Nashua, NH11 miles from this station, 48.7°F a year
- Manchester, NH12 miles from this station, 50.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made