Concord, New Hampshire climate: Normal weather by month, frost dates and records
Concord's normal year runs from 13°F January nights to 83°F July afternoons, with 42.0 inches of precipitation and 68 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 8.4°C, January lows of −11°C, July highs of 28°C, 1,066 mm of precipitation a year.
- NOAA stationConcord Municipal Airport
- Station IDUSW00014745
- Location43.20°N 71.50°W
- Elevation346 ft (106 m)
- From the center4 miles
- Population44,674
On October 22, the normal high in Concord is 59°F and the normal low 36°F, and the chance of measurable rain or snow is 34%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Concord.
- Jan 32° 13°
- Feb 35° 15°
- Mar 44° 23°
- Apr 58° 33°
- May 69° 44°
- Jun 78° 54°
- Jul 83° 59°
- Aug 82° 57°
- Sep 74° 49°
- Oct 61° 38°
- Nov 48° 29°
- Dec 37° 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 Concord each month?
July is the warmest month, with normal highs of 83°F; January the coldest, with normal lows of 13°F. The most precipitation falls in October (4.43 in), the least in February (2.75 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 32°F | 13°F | 22.3°F | 2.80 | 17.1 | 11 | <1 | 30 | 9 h 20 min |
| February | 35°F | 15°F | 24.7°F | 2.75 | 16.9 | 10 | <1 | 27 | 10 h 30 min |
| March | 44°F | 23°F | 33.4°F | 3.28 | 13.6 | 12 | <1 | 27 | 11 h 50 min |
| April | 58°F | 33°F | 45.4°F | 3.43 | 2.5 | 11 | <1 | 16 | 13 h 20 min |
| May | 69°F | 44°F | 56.7°F | 3.47 | 0.0 | 12 | 1 | 3 | 14 h 40 min |
| June | 78°F | 54°F | 65.8°F | 3.77 | 0.0 | 13 | 3 | <1 | 15 h 20 min |
| July | 83°F | 59°F | 71.1°F | 3.62 | 0.0 | 11 | 5 | <1 | 15 h 10 min |
| August | 82°F | 57°F | 69.5°F | 3.63 | 0.0 | 10 | 4 | <1 | 14 h |
| September | 74°F | 49°F | 61.4°F | 3.63 | 0.0 | 9 | 1 | 1 | 12 h 30 min |
| October | 61°F | 38°F | 49.3°F | 4.43 | 0.8 | 11 | <1 | 11 | 11 h 10 min |
| November | 48°F | 29°F | 38.6°F | 3.44 | 2.5 | 11 | <1 | 21 | 9 h 50 min |
| December | 37°F | 20°F | 28.3°F | 3.70 | 14.3 | 12 | <1 | 28 | 9 h |
| Year (annual) | 58°F | 36°F | 47.2°F | 41.95 | 67.7 | 133 | 14 | 165 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 0°C | −11°C | −5.4°C | 71 mm | 43 cm |
| February | 2°C | −10°C | −4.1°C | 70 mm | 43 cm |
| March | 6°C | −5°C | 0.8°C | 83 mm | 35 cm |
| April | 14°C | 1°C | 7.4°C | 87 mm | 6 cm |
| May | 21°C | 7°C | 13.7°C | 88 mm | 0 cm |
| June | 25°C | 12°C | 18.8°C | 96 mm | 0 cm |
| July | 28°C | 15°C | 21.7°C | 92 mm | 0 cm |
| August | 28°C | 14°C | 20.8°C | 92 mm | 0 cm |
| September | 23°C | 9°C | 16.3°C | 92 mm | 0 cm |
| October | 16°C | 3°C | 9.6°C | 113 mm | 2 cm |
| November | 9°C | −2°C | 3.7°C | 87 mm | 6 cm |
| December | 3°C | −7°C | −2.1°C | 94 mm | 36 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00014745; 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 Concord?
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 (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 USW00014745.
When is the last frost in Concord?
In Concord, the last spring frost (32°F) comes after May 8 in half of years and after May 22 in one year in ten; the first autumn frost comes before October 3 in half of years and before September 21 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 81 year in 10 after May 22; 9 in 10 after April 27
- First autumn frost, half of years before
- October 31 year in 10 before September 21; 9 in 10 before October 16
NOAA puts the median frost-free season at 146 days, and the season without a hard freeze (28°F) at 169 days.
A hard freeze (28°F) comes after April 27 in half of springs and before October 13 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Concord in zone 5b across its 2 ZIP code areas (5b in 03301, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Concord's NOAA station is in zone 5b: the coldest night of a typical year reaches −12°F (30 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 USW00014745; 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.
What hardiness zone is each Concord ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Concord's 2 ZIP code areas are all in zone 5b. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Concord?
In a normal year in Concord, 14 days a year reach 90°F, 165 nights fall to 32°F or colder and 133 days bring measurable precipitation.
- Days at 90°F or more
- 14a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 165a normal year
- Days that stay below freezing
- 44high of 32°F or less
- Days with 0.01 inch of precipitation
- 133a normal year
- Days with 1 inch of snow or more
- 17a normal year
The highest temperature in Concord's official record (kept by the National Weather Service since 1868) is 102°F, on July 4, 1911; the lowest is −37°F, on February 16, 1943.
The wettest calendar year on that record is 2008, with 57.97 in; the snowiest season is 1873–74, with 122.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00014745; records: ACIS (NOAA Regional Climate Centers), NWS threaded record CONthr. Records use complete months only; a month missing more than three days is left out.
How humid and windy is Concord, and how clear are its skies?
The summer (June-August) dew point averages 58°F. The muggiest month is July, with an average dew point of 60°F; the driest air comes in January (12°F). February is the windiest month (7.5 mph on average), and August has the most clear or nearly clear hours (64%).
| Month | Dew point | Humidity | Afternoon humidity | Wind | Clear or few clouds | Overcast |
|---|---|---|---|---|---|---|
| January | 12°F | 63% | 48% | 6.6 mph | 55% | 33% |
| February | 17°F | 62% | 48% | 7.5 mph | 50% | 38% |
| March | 26°F | 59% | 40% | 7.2 mph | 50% | 38% |
| April | 36°F | 58% | 37% | 6.6 mph | 51% | 36% |
| May | 49°F | 67% | 45% | 6.0 mph | 52% | 31% |
| June | 58°F | 69% | 47% | 5.6 mph | 60% | 21% |
| July | 60°F | 72% | 49% | 4.6 mph | 60% | 21% |
| August | 56°F | 72% | 47% | 4.5 mph | 64% | 20% |
| September | 47°F | 75% | 51% | 4.7 mph | 57% | 29% |
| October | 34°F | 70% | 50% | 5.8 mph | 51% | 36% |
| November | 25°F | 71% | 56% | 5.9 mph | 46% | 41% |
| December | 16°F | 69% | 55% | 6.4 mph | 50% | 38% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014745. Monthly averages of all hours; afternoon humidity at 3 p.m. local standard time; sky as the share of hours NOAA's observations rate clear or few clouds (a dash where NOAA publishes no sky value).
How sunny is Concord?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Concord, 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 much heating and cooling does Concord need?
A normal year in Concord brings 6,980 heating degree days, 30% more than the median U.S. place (5,373), and 528 cooling degree days, 42% 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 2,472 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,325 | 0 |
| February | 1,127 | 0 |
| March | 978 | 0 |
| April | 590 | 2 |
| May | 278 | 20 |
| June | 71 | 94 |
| July | 10 | 200 |
| August | 21 | 159 |
| September | 160 | 50 |
| October | 488 | 3 |
| November | 794 | 0 |
| December | 1,138 | 0 |
| Year (annual) | 6,980 | 528 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00014745. 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 Concord been warmer than normal lately?
2025 averaged 47.5°F, 0.3°F above the 1991-2020 normal of 47.2°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 49.1°F | +1.9°F | 44.02 | 35.1 |
| 2022 | 48.4°F | +1.2°F | 40.74 | 42.3 |
| 2023 | 49.4°F | +2.2°F | 50.59 | 63.3 |
| 2024 | 49.6°F | +2.4°F | 43.28 | 57.4 |
| 2025 | 47.5°F | +0.3°F | 39.27 | 45.5 |
Over 86 complete years from 1940 to 2025, the station's annual mean temperature rose at a fitted 3.5°F per century (+0.20°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00014745; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Concord's climate compare?
Concord is warmer than 20 of the other 27 places with their own NOAA record in New Hampshire, and wetter than 9. Across the 7,247 U.S. stations with normals, its annual mean of 47.2°F is warmer than 29%.
In the Köppen classification computed from these normals, Concord 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 Concord share this climate record?
4 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.
- Hooksett, NH15,377 people · 7 mi S
- Suncook, NH5,075 people · 5 mi SE
- Pittsfield, NH4,142 people · 11 mi NE
- Loudon, NH5,740 people · 6 mi N
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 Concord's climate
What is the coldest month in Concord?
January, with a normal high of 32°F and a normal low of 13°F. The warmest is July (83°F by day, 59°F at night).
Does it snow in Concord?
Yes: 68 inches in a normal year, falling on 30 days with 0.1 inch or more, the most in January (17.1 inches).
What is the rainiest month in Concord?
October, with 4.43 in of precipitation in a normal year; the driest is February with 2.75 in.
What plant hardiness zone is Concord in?
The USDA's 2023 map puts Concord in zone 5b across its 2 ZIP code areas (5b in 03301, the largest). By the same method at Concord's NOAA station, the coldest night of a typical year reaches −12°F (30 years, 1991-2020): zone 5b.
How late can frost come in Concord?
In half of years the last 32°F night comes after May 8; in one year in ten it comes after May 22. Waiting until May 22 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Concord in OctoberThis month day by day, its records and recent years
- New Hampshire climateThe statewide normals and every place in the state
- Hopkinton Lake, NH12 miles from this station, 46.3°F a year
- Weare, NH14 miles from this station, 46.3°F a year
- Weare (2 mi NE), NH14 miles from this station, 46.8°F a year
- Massabesic Lake, NH16 miles from this station, 47.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made