Belcourt, North Dakota climate: Normal weather by month, frost dates and records
Belcourt's normal year runs from −5°F January nights to 79°F July afternoons, with 20.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 3.4°C, January lows of −21°C, July highs of 26°C, 512 mm of precipitation a year.
- NOAA stationBelcourt KEYA Radio
- Station IDUSC00320626
- Location48.84°N 99.75°W
- Elevation1,960 ft (597 m)
- Population (census place)1,739
On October 14, the normal high in Belcourt is 54°F and the normal low 31°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Belcourt.
- Jan 18° -5°
- Feb 22° -2°
- Mar 34° 12°
- Apr 50° 26°
- May 64° 40°
- Jun 73° 50°
- Jul 79° 55°
- Aug 79° 53°
- Sep 69° 43°
- Oct 53° 30°
- Nov 35° 16°
- Dec 22° 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 Belcourt each month?
July is the warmest month, with normal highs of 79°F; January the coldest, with normal lows of −5°F. The most precipitation falls in June (4.04 in), the least in January (0.42 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 18°F | −5°F | 6.4°F | 0.42 | – | <1 | 31 | 8 h 40 min |
| February | 22°F | −2°F | 10.0°F | 0.48 | – | <1 | 28 | 10 h 10 min |
| March | 34°F | 12°F | 22.8°F | 0.80 | – | <1 | 30 | 11 h 50 min |
| April | 50°F | 26°F | 38.4°F | 0.92 | – | <1 | 23 | 13 h 40 min |
| May | 64°F | 40°F | 51.8°F | 2.85 | – | <1 | 9 | 15 h 10 min |
| June | 73°F | 50°F | 61.6°F | 4.04 | – | 1 | 1 | 16 h 10 min |
| July | 79°F | 55°F | 67.2°F | 2.77 | – | 2 | <1 | 15 h 50 min |
| August | 79°F | 53°F | 65.8°F | 2.58 | – | 2 | <1 | 14 h 30 min |
| September | 69°F | 43°F | 55.6°F | 1.74 | – | <1 | 5 | 12 h 40 min |
| October | 53°F | 30°F | 41.3°F | 2.25 | – | <1 | 21 | 10 h 50 min |
| November | 35°F | 16°F | 25.3°F | 0.84 | – | <1 | 29 | 9 h 10 min |
| December | 22°F | 2°F | 11.9°F | 0.45 | – | <1 | 31 | 8 h 20 min |
| Year (annual) | 50°F | 27°F | 38.2°F | 20.14 | – | 5 | 209 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −8°C | −21°C | −14.2°C | 11 mm |
| February | −5°C | −19°C | −12.2°C | 12 mm |
| March | 1°C | −11°C | −5.1°C | 20 mm |
| April | 10°C | −3°C | 3.6°C | 23 mm |
| May | 18°C | 4°C | 11.0°C | 72 mm |
| June | 23°C | 10°C | 16.4°C | 103 mm |
| July | 26°C | 13°C | 19.6°C | 70 mm |
| August | 26°C | 12°C | 18.8°C | 66 mm |
| September | 20°C | 6°C | 13.1°C | 44 mm |
| October | 12°C | −1°C | 5.2°C | 57 mm |
| November | 2°C | −9°C | −3.7°C | 21 mm |
| December | −6°C | −16°C | −11.2°C | 11 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Hansboro (21 miles away), gets 38 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00320626; 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 Belcourt?
Normal highs sit between 65°F and 85°F in June, July, August and September.
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 USC00320626.
When is the last frost in Belcourt?
In Belcourt, the last spring frost (32°F) comes after May 19 in half of years and after June 1 in one year in ten; the first autumn frost comes before September 24 in half of years and before September 10 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 191 year in 10 after June 1; 9 in 10 after May 5
- First autumn frost, half of years before
- September 241 year in 10 before September 10; 9 in 10 before October 5
NOAA puts the median frost-free season at 126 days, and the season without a hard freeze (28°F) at 143 days.
A hard freeze (28°F) comes after May 9 in half of springs and before October 2 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Belcourt in zone 3b in ZIP code 58316, the nearest ZIP area.
Frost dates for every NOAA station in North Dakota · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00320626; 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 Belcourt?
In a normal year in Belcourt, 5 days a year reach 90°F and 209 nights fall to 32°F or colder.
- Days at 90°F or more
- 5a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 209a normal year
- Days that stay below freezing
- 105high of 32°F or less
The highest temperature in this station's record (since 1945) is 105°F, on June 5, 2021; the lowest is −45°F, on February 24, 1955.
The wettest calendar year on that record is 1954, with 28.41 in; the snowiest season is 1975–76, with 92.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00320626; records: ACIS (NOAA Regional Climate Centers), station USC00320626. Records use complete months only; a month missing more than three days is left out.
How sunny is Belcourt?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Belcourt, 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 Belcourt need?
A normal year in Belcourt brings 10,015 heating degree days, 86% more than the median U.S. place (5,373), and 279 cooling degree days, 69% 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 1,783 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,816 | 0 |
| February | 1,540 | 0 |
| March | 1,308 | 0 |
| April | 800 | 0 |
| May | 419 | 8 |
| June | 144 | 42 |
| July | 48 | 118 |
| August | 70 | 95 |
| September | 298 | 16 |
| October | 735 | 1 |
| November | 1,193 | 0 |
| December | 1,644 | 0 |
| Year (annual) | 10,015 | 279 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00320626. 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 Belcourt been warmer than normal lately?
2025 averaged 38.9°F, 0.7°F above the 1991-2020 normal of 38.2°F. 3 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 40.2°F | +2.0°F | – |
| 2022 | 36.7°F | −1.5°F | – |
| 2024 | 41.0°F | +2.8°F | – |
| 2025 | 38.9°F | +0.7°F | – |
Over 30 complete years from 1946 to 2025, the station's annual mean temperature rose at a fitted 2.4°F per century (+0.13°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00320626; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Belcourt's climate compare?
Belcourt is warmer than 6 of the other 91 places with their own NOAA record in North Dakota, and wetter than 51. Across the 7,247 U.S. stations with normals, its annual mean of 38.2°F is warmer than 3%.
In the Köppen classification computed from these normals, Belcourt 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 Belcourt 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.
- Shell Valley, ND1,112 people · 4 mi SW
- Green Acres, ND914 people · 3 mi E
- Dunseith, ND605 people · 14 mi W
- East Dunseith, ND367 people · 12 mi W
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 Belcourt's climate
What is the coldest month in Belcourt?
January, with a normal high of 18°F and a normal low of −5°F. The warmest is July (79°F by day, 55°F at night).
Does it snow in Belcourt?
Yes. NOAA publishes no 1991-2020 snowfall normal for Belcourt's NOAA station; the nearest record that keeps one, Hansboro (21 miles away), records 38 inches of snow in a normal year.
What is the rainiest month in Belcourt?
June, with 4.04 in of precipitation in a normal year; the driest is January with 0.42 in.
What plant hardiness zone is Belcourt in?
The USDA's 2023 map puts Belcourt in zone 3b in ZIP code 58316, the nearest ZIP area.
How late can frost come in Belcourt?
In half of years the last 32°F night comes after May 19; in one year in ten it comes after June 1. Waiting until June 1 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
- Rolla, ND8 miles from this station, 36.5°F a year
- Rolette, ND15 miles from this station, 36.1°F a year
- Hansboro, ND21 miles from this station, 38.6°F a year
- Lake Metigoshe State Park, ND28 miles from this station, 37.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made