New London, Minnesota climate: Normal weather by month, frost dates and records
New London's normal year runs from 1°F January nights to 82°F July afternoons, with 31.4 inches of precipitation and 50 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.1°C, January lows of −17°C, July highs of 28°C, 797 mm of precipitation a year.
- NOAA stationNew London
- Station IDUSC00215842
- Location45.30°N 94.94°W
- Elevation1,250 ft (381 m)
- Population1,316
On October 23, the normal high in New London is 53°F and the normal low 32°F, and the chance of measurable rain or snow is 21%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for New London.
- Jan 20° 1°
- Feb 25° 5°
- Mar 38° 17°
- Apr 54° 31°
- May 68° 46°
- Jun 78° 57°
- Jul 82° 61°
- Aug 80° 59°
- Sep 72° 50°
- Oct 57° 35°
- Nov 39° 22°
- Dec 25° 9°
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 New London each month?
July is the warmest month, with normal highs of 82°F; January the coldest, with normal lows of 1°F. The most precipitation falls in June (4.89 in), the least in January (0.87 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 20°F | 1°F | 10.9°F | 0.87 | 10.3 | 5 | <1 | 31 | 9 h 10 min |
| February | 25°F | 5°F | 14.9°F | 0.97 | 9.1 | 5 | <1 | 27 | 10 h 20 min |
| March | 38°F | 17°F | 27.7°F | 1.84 | 8.4 | 6 | <1 | 27 | 11 h 50 min |
| April | 54°F | 31°F | 42.7°F | 3.05 | 4.7 | 7 | <1 | 14 | 13 h 30 min |
| May | 68°F | 46°F | 56.9°F | 3.53 | 0.0 | 10 | 1 | 2 | 14 h 50 min |
| June | 78°F | 57°F | 67.1°F | 4.89 | 0.0 | 11 | 2 | <1 | 15 h 40 min |
| July | 82°F | 61°F | 71.5°F | 4.15 | 0.0 | 9 | 4 | <1 | 15 h 20 min |
| August | 80°F | 59°F | 69.5°F | 3.53 | 0.0 | 8 | 2 | <1 | 14 h 10 min |
| September | 72°F | 50°F | 61.0°F | 3.47 | 0.0 | 9 | 1 | <1 | 12 h 40 min |
| October | 57°F | 35°F | 45.9°F | 2.60 | 0.8 | 7 | <1 | 9 | 11 h |
| November | 39°F | 22°F | 30.9°F | 1.58 | 9.0 | 5 | <1 | 25 | 9 h 30 min |
| December | 25°F | 9°F | 16.8°F | 0.90 | 7.9 | 5 | <1 | 31 | 8 h 50 min |
| Year (annual) | 53°F | 33°F | 43.0°F | 31.38 | 50.2 | 86 | 10 | 165 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −6°C | −17°C | −11.7°C | 22 mm | 26 cm |
| February | −4°C | −15°C | −9.5°C | 25 mm | 23 cm |
| March | 3°C | −8°C | −2.4°C | 47 mm | 21 cm |
| April | 12°C | 0°C | 5.9°C | 77 mm | 12 cm |
| May | 20°C | 8°C | 13.8°C | 90 mm | 0 cm |
| June | 25°C | 14°C | 19.5°C | 124 mm | 0 cm |
| July | 28°C | 16°C | 21.9°C | 105 mm | 0 cm |
| August | 27°C | 15°C | 20.8°C | 90 mm | 0 cm |
| September | 22°C | 10°C | 16.1°C | 88 mm | 0 cm |
| October | 14°C | 2°C | 7.7°C | 66 mm | 2 cm |
| November | 4°C | −5°C | −0.6°C | 40 mm | 23 cm |
| December | −4°C | −13°C | −8.4°C | 23 mm | 20 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00215842; 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 New London?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, August has the fewest days with rain (8).
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 USC00215842.
When is the last frost in New London?
In New London, the last spring frost (32°F) comes after May 4 in half of years and after May 19 in one year in ten; the first autumn frost comes before October 4 in half of years and before September 23 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 41 year in 10 after May 19; 9 in 10 after April 23
- First autumn frost, half of years before
- October 41 year in 10 before September 23; 9 in 10 before October 16
NOAA puts the median frost-free season at 152 days, and the season without a hard freeze (28°F) at 168 days.
A hard freeze (28°F) comes after April 26 in half of springs and before October 13 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts New London in zone 4b in ZIP code 56273, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, New London's NOAA station is in zone 4b: the coldest night of a typical year reaches −22°F (18 complete years).
Frost dates for every NOAA station in Minnesota · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00215842; 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 New London?
In a normal year in New London, 10 days a year reach 90°F, 165 nights fall to 32°F or colder and 86 days bring measurable precipitation.
- Days at 90°F or more
- 10a 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
- 82high of 32°F or less
- Days with 0.01 inch of precipitation
- 86a normal year
- Days with 1 inch of snow or more
- 18a normal year
The highest temperature in this station's record (since 1893) is 110°F, on July 24, 1901; the lowest is −42°F, on January 12, 1912.
The wettest calendar year on that record is 1983, with 46.44 in; the snowiest season is 1950–51, with 112.1 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00215842; records: ACIS (NOAA Regional Climate Centers), station USC00215842. Records use complete months only; a month missing more than three days is left out.
How sunny is New London?
Over a year 74% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around New London, 3.9 kWh per square metre a day. July is the sunniest month (82%) and December the cloudiest (61%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 1.8 |
| February | 81% | 3.0 |
| March | 72% | 3.8 |
| April | 70% | 4.8 |
| May | 69% | 5.5 |
| June | 74% | 6.1 |
| July | 82% | 6.5 |
| August | 80% | 5.4 |
| September | 76% | 4.1 |
| October | 69% | 2.6 |
| November | 67% | 1.7 |
| December | 61% | 1.2 |
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 New London need?
A normal year in New London brings 8,561 heating degree days, 59% more than the median U.S. place (5,373), and 577 cooling degree days, 36% 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 2,501 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,679 | 0 |
| February | 1,401 | 0 |
| March | 1,156 | 0 |
| April | 670 | 1 |
| May | 280 | 29 |
| June | 58 | 121 |
| July | 10 | 210 |
| August | 21 | 161 |
| September | 173 | 53 |
| October | 595 | 2 |
| November | 1,023 | 0 |
| December | 1,496 | 0 |
| Year (annual) | 8,561 | 577 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00215842. 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 New London's climate compare?
New London is warmer than 60 of the other 128 places with their own NOAA record in Minnesota, and wetter than 75. 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, New London 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 New London share this climate record?
7 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.
- Paynesville, MN2,586 people · 12 mi NE
- Spicer, MN1,099 people · 5 mi S
- Belgrade, MN742 people · 11 mi N
- Brooten, MN646 people · 16 mi NW
- Sunburg, MN95 people · 15 mi W
- Lake Henry, MN77 people · 13 mi NE
- Regal, MN40 people · 8 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 New London's climate
What is the coldest month in New London?
January, with a normal high of 20°F and a normal low of 1°F. The warmest is July (82°F by day, 61°F at night).
Does it snow in New London?
Yes: 50 inches in a normal year, falling on 23 days with 0.1 inch or more, the most in January (10.3 inches).
What is the rainiest month in New London?
June, with 4.89 in of precipitation in a normal year; the driest is January with 0.87 in.
What plant hardiness zone is New London in?
The USDA's 2023 map puts New London in zone 4b in ZIP code 56273, the nearest ZIP area. By the same method at New London's NOAA station, the coldest night of a typical year reaches −22°F (18 years, 1991-2020): zone 4b.
How late can frost come in New London?
In half of years the last 32°F night comes after May 4; in one year in ten it comes after May 19. Waiting until May 19 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Minnesota climateThe statewide normals and every place in the state
- Willmar, MN14 miles from this station, 43.7°F a year
- Litchfield, MN23 miles from this station, 42.2°F a year
- Melrose, MN27 miles from this station, 42.0°F a year
- Kimball, MN31 miles from this station, 42.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made