Berlin, New Hampshire climate: Normal weather by month, frost dates and records
Berlin's normal year runs from 3°F January nights to 80°F July afternoons, with 36.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 5.2°C, January lows of −16°C, July highs of 27°C, 926 mm of precipitation a year.
- NOAA stationBerlin Municipal Airport
- Station IDUSW00094700
- Location44.58°N 71.18°W
- Elevation1,158 ft (353 m)
- Population9,248
On October 23, the normal high in Berlin is 54°F and the normal low 30°F, and the chance of measurable rain or snow is 46%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Berlin.
- Jan 27° 3°
- Feb 30° 3°
- Mar 39° 14°
- Apr 53° 27°
- May 67° 37°
- Jun 75° 47°
- Jul 80° 52°
- Aug 78° 50°
- Sep 71° 42°
- Oct 57° 32°
- Nov 44° 23°
- Dec 32° 12°
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 Berlin each month?
July is the warmest month, with normal highs of 80°F; January the coldest, with normal lows of 3°F. The most precipitation falls in June (4.26 in), the least in February (1.66 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 27°F | 3°F | 14.8°F | 2.00 | 11 | <1 | 31 | 9 h 10 min |
| February | 30°F | 3°F | 16.6°F | 1.66 | 10 | <1 | 28 | 10 h 30 min |
| March | 39°F | 14°F | 26.5°F | 2.07 | 12 | <1 | 29 | 11 h 50 min |
| April | 53°F | 27°F | 39.8°F | 3.07 | 14 | <1 | 23 | 13 h 30 min |
| May | 67°F | 37°F | 51.8°F | 3.48 | 15 | <1 | 10 | 14 h 50 min |
| June | 75°F | 47°F | 61.0°F | 4.26 | 17 | 1 | 1 | 15 h 30 min |
| July | 80°F | 52°F | 65.8°F | 4.04 | 17 | 1 | <1 | 15 h 20 min |
| August | 78°F | 50°F | 64.2°F | 3.94 | 17 | 1 | <1 | 14 h 10 min |
| September | 71°F | 42°F | 56.6°F | 3.12 | 14 | <1 | 4 | 12 h 40 min |
| October | 57°F | 32°F | 44.7°F | 3.74 | 15 | <1 | 17 | 11 h |
| November | 44°F | 23°F | 33.4°F | 2.78 | 13 | <1 | 25 | 9 h 40 min |
| December | 32°F | 12°F | 21.8°F | 2.31 | 14 | <1 | 30 | 8 h 50 min |
| Year (annual) | 54°F | 28°F | 41.4°F | 36.47 | 168 | 4 | 197 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −3°C | −16°C | −9.6°C | 51 mm |
| February | −1°C | −16°C | −8.6°C | 42 mm |
| March | 4°C | −10°C | −3.1°C | 53 mm |
| April | 11°C | −3°C | 4.3°C | 78 mm |
| May | 19°C | 3°C | 11.0°C | 88 mm |
| June | 24°C | 8°C | 16.1°C | 108 mm |
| July | 27°C | 11°C | 18.8°C | 103 mm |
| August | 26°C | 10°C | 17.9°C | 100 mm |
| September | 22°C | 6°C | 13.7°C | 79 mm |
| October | 14°C | 0°C | 7.1°C | 95 mm |
| November | 7°C | −5°C | 0.8°C | 71 mm |
| December | 0°C | −11°C | −5.7°C | 59 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. Berlin's own co-op station Berlin station does: 82 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094700; 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 Berlin?
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 (14).
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 USW00094700.
When is the last frost in Berlin?
In Berlin, the last spring frost (32°F) comes after May 30 in half of years and after June 11 in one year in ten; the first autumn frost comes before September 19 in half of years and before September 5 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 301 year in 10 after June 11; 9 in 10 after May 15
- First autumn frost, half of years before
- September 191 year in 10 before September 5; 9 in 10 before October 3
NOAA puts the median frost-free season at 112 days, and the season without a hard freeze (28°F) at 136 days.
A hard freeze (28°F) comes after May 17 in half of springs and before September 30 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Berlin in zone 4b in ZIP code 03570. By the map's own method, the average of each year's coldest night over 1991-2020, Berlin's NOAA station is in zone 4a: the coldest night of a typical year reaches −27°F (22 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in New Hampshire · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00094700; 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 in Berlin?
In a normal year in Berlin, 4 days a year reach 90°F, 197 nights fall to 32°F or colder and 168 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
- 197a normal year
- Days that stay below freezing
- 70high of 32°F or less
- Days with 0.01 inch of precipitation
- 168a normal year
The highest temperature in this station's record (since 1996) is 95°F, on May 27, 2020; the lowest is −39°F, on January 16, 2009.
The wettest calendar year on that record is 2005, with 48.62 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00094700; records: ACIS (NOAA Regional Climate Centers), station USW00094700. Records use complete months only; a month missing more than three days is left out.
How sunny is Berlin?
Over a year 66% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Berlin, 3.5 kWh per square metre a day. September is the sunniest month (73%) and December the cloudiest (54%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 59% | 1.4 |
| February | 62% | 2.3 |
| March | 65% | 3.5 |
| April | 64% | 4.4 |
| May | 64% | 5.1 |
| June | 67% | 5.5 |
| July | 71% | 5.6 |
| August | 73% | 5.0 |
| September | 73% | 4.0 |
| October | 62% | 2.4 |
| November | 59% | 1.6 |
| December | 54% | 1.1 |
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 Berlin need?
A normal year in Berlin brings 8,755 heating degree days, 63% more than the median U.S. place (5,373), and 195 cooling degree days, 79% 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 1,679 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,558 | 0 |
| February | 1,355 | 0 |
| March | 1,195 | 0 |
| April | 756 | 0 |
| May | 413 | 5 |
| June | 156 | 35 |
| July | 56 | 81 |
| August | 82 | 56 |
| September | 267 | 17 |
| October | 630 | 0 |
| November | 950 | 0 |
| December | 1,338 | 0 |
| Year (annual) | 8,755 | 195 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00094700. 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 Berlin been warmer than normal lately?
2025 averaged 42.0°F, 0.6°F above the 1991-2020 normal of 41.4°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 43.9°F | +2.5°F | 29.93 |
| 2022 | 43.3°F | +1.9°F | 31.80 |
| 2023 | 44.6°F | +3.2°F | 40.13 |
| 2024 | 44.6°F | +3.2°F | 37.50 |
| 2025 | 42.0°F | +0.6°F | 30.15 |
Source: observed years: ACIS, station USW00094700. A year counts only with all twelve months complete.
How does Berlin's climate compare?
Berlin is warmer than 1 of the other 27 places with their own NOAA record in New Hampshire, and wetter than 0. Across the 7,247 U.S. stations with normals, its annual mean of 41.4°F is warmer than 8%.
In the Köppen classification computed from these normals, Berlin 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.
What do Berlin's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Berlin. This page uses Berlin Municipal Airport; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Berlin station USC00270690 | 8 mi S | 920 ft | 42.5°F | 5°F | 78°F | 42.6 | 82 | May 14 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Berlin's climate
What is the coldest month in Berlin?
January, with a normal high of 27°F and a normal low of 3°F. The warmest is July (80°F by day, 52°F at night).
Does it snow in Berlin?
Yes. NOAA publishes no 1991-2020 snowfall normal for Berlin's NOAA station; Berlin's own co-op station Berlin station records 82 inches of snow in a normal year.
What is the rainiest month in Berlin?
June, with 4.26 in of precipitation in a normal year; the driest is February with 1.66 in.
What plant hardiness zone is Berlin in?
The USDA's 2023 map puts Berlin in zone 4b in ZIP code 03570. By the same method at Berlin's NOAA station, the coldest night of a typical year reaches −27°F (22 years, 1991-2020): zone 4a.
How late can frost come in Berlin?
In half of years the last 32°F night comes after May 30; in one year in ten it comes after June 11. Waiting until June 11 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
- York Pond, NH9 miles from this station, 40.4°F a year
- Gorham, NH12 miles from this station, 42.6°F a year
- Errol Airport, NH15 miles from this station, 39.5°F a year
- Middle Dam, ME19 miles from this station, 40.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made