Langdon, North Dakota climate: Normal weather by month, frost dates and records
Langdon's normal year runs from −5°F January nights to 77°F July afternoons, with 20.8 inches of precipitation and 47 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 2.8°C, January lows of −21°C, July highs of 25°C, 527 mm of precipitation a year.
- NOAA stationLangdon Experiment Farm
- Station IDUSC00324958
- Location48.76°N 98.34°W
- Elevation1,615 ft (492 m)
- Population1,841
On October 14, the normal high in Langdon is 52°F and the normal low 32°F, and the chance of measurable rain or snow is 25%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Langdon.
- Jan 13° -5°
- Feb 17° -2°
- Mar 30° 12°
- Apr 48° 28°
- May 64° 40°
- Jun 72° 52°
- Jul 77° 56°
- Aug 77° 54°
- Sep 67° 44°
- Oct 51° 31°
- Nov 32° 16°
- Dec 18° 2°
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 Langdon each month?
July is the warmest month, with normal highs of 77°F; January the coldest, with normal lows of −5°F. The most precipitation falls in June (4.17 in), the least in February (0.36 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 13°F | −5°F | 3.7°F | 0.45 | 8.2 | 8 | <1 | 31 | 8 h 40 min |
| February | 17°F | −2°F | 7.6°F | 0.36 | 6.1 | 5 | <1 | 28 | 10 h 10 min |
| March | 30°F | 12°F | 20.9°F | 0.59 | 6.1 | 6 | <1 | 30 | 11 h 50 min |
| April | 48°F | 28°F | 37.8°F | 1.14 | 4.4 | 6 | <1 | 22 | 13 h 40 min |
| May | 64°F | 40°F | 51.9°F | 3.13 | 1.2 | 11 | <1 | 7 | 15 h 10 min |
| June | 72°F | 52°F | 61.7°F | 4.17 | 0.0 | 13 | <1 | <1 | 16 h 10 min |
| July | 77°F | 56°F | 66.2°F | 3.44 | 0.0 | 11 | 1 | <1 | 15 h 50 min |
| August | 77°F | 54°F | 65.1°F | 2.45 | 0.0 | 9 | 1 | <1 | 14 h 30 min |
| September | 67°F | 44°F | 55.7°F | 2.11 | 0.0 | 8 | <1 | 3 | 12 h 40 min |
| October | 51°F | 31°F | 40.7°F | 1.52 | 2.6 | 8 | <1 | 19 | 10 h 50 min |
| November | 32°F | 16°F | 24.0°F | 0.75 | 8.1 | 6 | <1 | 28 | 9 h 10 min |
| December | 18°F | 2°F | 10.2°F | 0.64 | 10.6 | 7 | <1 | 31 | 8 h 20 min |
| Year (annual) | 47°F | 27°F | 37.1°F | 20.75 | 47.3 | 99 | 3 | 200 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −11°C | −21°C | −15.7°C | 11 mm | 21 cm |
| February | −8°C | −19°C | −13.6°C | 9 mm | 15 cm |
| March | −1°C | −11°C | −6.2°C | 15 mm | 15 cm |
| April | 9°C | −2°C | 3.2°C | 29 mm | 11 cm |
| May | 18°C | 5°C | 11.1°C | 80 mm | 3 cm |
| June | 22°C | 11°C | 16.5°C | 106 mm | 0 cm |
| July | 25°C | 13°C | 19.0°C | 87 mm | 0 cm |
| August | 25°C | 12°C | 18.4°C | 62 mm | 0 cm |
| September | 20°C | 7°C | 13.2°C | 54 mm | 0 cm |
| October | 11°C | −1°C | 4.8°C | 39 mm | 7 cm |
| November | 0°C | −9°C | −4.4°C | 19 mm | 21 cm |
| December | −8°C | −17°C | −12.1°C | 16 mm | 27 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00324958; 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 Langdon?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, September 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 USC00324958.
When is the last frost in Langdon?
In Langdon, the last spring frost (32°F) comes after May 17 in half of years and after May 30 in one year in ten; the first autumn frost comes before September 26 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 171 year in 10 after May 30; 9 in 10 after May 4
- First autumn frost, half of years before
- September 261 year in 10 before September 13; 9 in 10 before October 7
NOAA puts the median frost-free season at 132 days, and the season without a hard freeze (28°F) at 151 days.
A hard freeze (28°F) comes after May 7 in half of springs and before October 4 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Langdon in zone 3b in ZIP code 58249, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Langdon's NOAA station is in zone 3b: the coldest night of a typical year reaches −31°F (20 complete years).
Frost dates for every NOAA station in North Dakota · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00324958; 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 Langdon?
In a normal year in Langdon, 3 days a year reach 90°F, 200 nights fall to 32°F or colder and 99 days bring measurable precipitation.
- Days at 90°F or more
- 3a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 200a normal year
- Days that stay below freezing
- 117high of 32°F or less
- Days with 0.01 inch of precipitation
- 99a normal year
- Days with 1 inch of snow or more
- 18a normal year
The highest temperature in this station's record (since 1897) is 112°F, on July 12, 1936; the lowest is −51°F, on February 16, 1936.
The wettest calendar year on that record is 1954, with 28.05 in; the snowiest season is 1949–50, with 86.7 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00324958; records: ACIS (NOAA Regional Climate Centers), station USC00324958. Records use complete months only; a month missing more than three days is left out.
How sunny is Langdon?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Langdon, 3.9 kWh per square metre a day. February is the sunniest month (89%) and November the cloudiest (67%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 84% | 1.7 |
| February | 89% | 3.0 |
| March | 80% | 4.1 |
| April | 73% | 4.9 |
| May | 72% | 5.7 |
| June | 74% | 6.1 |
| July | 83% | 6.5 |
| August | 80% | 5.3 |
| September | 76% | 3.9 |
| October | 69% | 2.5 |
| November | 67% | 1.5 |
| December | 70% | 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 Langdon need?
A normal year in Langdon brings 10,360 heating degree days, 93% more than the median U.S. place (5,373), and 249 cooling degree days, 73% fewer than the median (908). Nine months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,749 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,899 | 0 |
| February | 1,609 | 0 |
| March | 1,367 | 0 |
| April | 816 | 0 |
| May | 413 | 9 |
| June | 142 | 44 |
| July | 56 | 93 |
| August | 77 | 82 |
| September | 301 | 20 |
| October | 753 | 1 |
| November | 1,230 | 0 |
| December | 1,699 | 0 |
| Year (annual) | 10,360 | 249 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00324958. 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 Langdon's climate compare?
Langdon is warmer than 2 of the other 91 places with their own NOAA record in North Dakota, and wetter than 56. Across the 7,247 U.S. stations with normals, its annual mean of 37.1°F is warmer than 3%.
In the Köppen classification computed from these normals, Langdon is Dwb: continental, dry-winter, 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 Langdon share this climate record?
5 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.
- Osnabrock, ND95 people · 11 mi SE
- Milton, ND40 people · 17 mi SE
- Hannah, ND9 people · 21 mi NW
- Loma, ND9 people · 12 mi SW
- Wales, ND9 people · 15 mi NW
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 Langdon's climate
What is the coldest month in Langdon?
January, with a normal high of 13°F and a normal low of −5°F. The warmest is July (77°F by day, 56°F at night).
Does it snow in Langdon?
Yes: 47 inches in a normal year, falling on 34 days with 0.1 inch or more, the most in December (10.6 inches).
What is the rainiest month in Langdon?
June, with 4.17 in of precipitation in a normal year; the driest is February with 0.36 in.
What plant hardiness zone is Langdon in?
The USDA's 2023 map puts Langdon in zone 3b in ZIP code 58249, the nearest ZIP area. By the same method at Langdon's NOAA station, the coldest night of a typical year reaches −31°F (20 years, 1991-2020): zone 3b.
How late can frost come in Langdon?
In half of years the last 32°F night comes after May 17; in one year in ten it comes after May 30. Waiting until May 30 leaves about a one-in-ten chance of a later frost.
Nearby and next
- North Dakota climateThe statewide normals and every place in the state
- Edmore, ND22 miles from this station, 37.3°F a year
- Cavalier, ND30 miles from this station, 38.1°F a year
- Grafton, ND48 miles from this station, 42.0°F a year
- Hansboro, ND48 miles from this station, 38.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made